Our Other Websites:


Is this the best intro ophthalmology book ever written? Well … that’s how some fans describe OphthoBook. In fact, you can read hundreds of comments from satisfied readers on this site. Here you’ll find the "free" online chapters of the book, along with video lectures that correspond to each chapter. Help support this project by buying the printed book at Amazon:



Visit our video section to view online lectures for every chapter. These videos are completely free, and will will really help the book chapters “sink in.”

The live lectures (like the ones below) are even better! The best part … these videos are completely free and can be watched online immediately!

Slit Lamp Video Lecture Link

Super Eye Palsies

Exploding Eye Lecture


ophthobookquestionsOphthoBook Questions is out!

Our newest book series OphthoBook Questions is officially out and ready for purchase on Amazon. This hilarious book contains over 300 multiple choice questions, sampling every subspecialty within our field. It’s perfect for the struggling student or technician trying to get ahead!

This book is appropriate for medical students, optometry students, and eye technicians scrambling to learn the basics as quickly as possible. The material within these pages is BASIC! Experienced residents and practicing doctors will find this series too easy.

Check out the silly video “infomercial” that explains the book in more detail. Warning: This video gets crazier the longer you watch.




very nice book, informative, comprehensive, attractive.
keep it up.

Comment by hamoud — December 13, 2007

A very good, short and informative introduction into ophthalmology for students or primary care physicians. The author has the educational talent to explain things clearly without any fuss. Highly recommended!
Jan de Waard GP.

Comment by Jan de Waard — January 2, 2008

i absolutely loved the book

Comment by lm — February 9, 2008

Great book!

Comment by kuden — February 25, 2008

Great book…very informative and presented clearly!

Comment by Srini — June 3, 2008

I hate Tim Root, but I love this book….if only there were some way to get rid of him and keep the book!

Editor’s comment: Ha!

Comment by Chip Oester — July 7, 2008

The author of the book is a very interesting guy who loves anything that has an optic system involved. The book is avery instructional aid for medical students.
Good luck Dr. Root in your new endeavors!!

Comment by DEH — July 26, 2008

wonderful and informative. Especially videos are awesome that helped me a lot in understanding ophthalmology.

Comment by Nahid — September 7, 2008

perfect website with simple words >>> really it’s excellent
good Luck 🙂 😀

Comment by amany — September 16, 2008

What can I say? It is an incrediable book which helps me a lot to preparing the application of Residency. Also, I would like to make some correction about cornea at Page 32. “Conea should be measured around 540µm instead of 540nm”. Same mistakes also in PIMP question no.8. And, would it be possible to let me translate the book content to Traditional Chinese to introduce this excellent book for the medical students who speak Chinese?

Comment by Jonathan Bennett — October 18, 2008

aha! I’d love to link this site, could I?

Comment by bagus ramdan — November 27, 2008

You know this site is not only useful for med students but the people who are studying orthoptics

Comment by Me — November 27, 2008

This is one of the best resources I have read in 4 years of medical school. I highly recommend it for any student wanting to learn ophthalmology. A true benchmark in books for medical students!

Comment by steve k — December 3, 2008

Probably being stupid and have just missed it, but is there a section on iritis, scleritis and episcleritis? Is it in the pipeline? Videos are BRILLIANT by the way!

Comment by Adam — December 3, 2008

Very goodwords selection.thanks

Comment by kazim — December 30, 2008

i love this site very muchhhhhhhhhhhhhhhhhhhhhhhhhh wonderfull!!!!!!!!!!!!!!!!!

Comment by sally — January 7, 2009

i can’t imagine we a site like that.

Comment by Mohamed Reffat — January 28, 2009

(optometry student)

Comment by kushlani — February 3, 2009

Great Book!

This book has been chosen as our introduction to Ophthalmology at the FSU College of Medicine at Daytona Beach, Florida…the PUPILS love it!


Comment by Joe France — February 16, 2009

Live in the uk, how do i purchase the book and how much is it?

Comment by alanna — February 23, 2009

Love your site and sense of humor. This has been a great additional help for studing for the COA. Thanks!

Comment by Donna — March 11, 2009

great site!! the book and the videos make it really easy to learn.

love it!!

many thanks from Portugal

Comment by Luisa — March 11, 2009

Loved this. Do you have anything similar for oculoplastics?

Comment by Paula — March 13, 2009

Your opthonotes are great.Keep up the good work

Comment by R.Chandrashekar — March 29, 2009

Exelente sitio!!! sus guias son cortas y precisas y con un diseño a prueba de…

Comment by Juan Hernandez — April 8, 2009

This book is so great. Its exactly what I was looking for, and I actually like reading it in my free time. Now I won’t feel like an idiot when I shadow the ophthalmologists at school haha. Thanks for the awesome resource!!!

Comment by DBMinor MS1 — April 22, 2009

Its a capsule of knowledge. When a book is so simple to read and understand we must appreciate the tremendous effort of the author, the master teacher. A salute for his efforts.And thank you so much.

A Medical Student,

Comment by ramu — April 25, 2009

It,s really a goooooooood book ,but our course just 2 week ,so ………..?

Comment by H-WADANI — May 8, 2009

Nice info! Thanks…

Diptha Adrian
Marketing Supervisor
Kasoem Jr. Optical
Jakarta – Indonesia

Comment by Diptha Adrian — May 15, 2009

thanks… its really useful…

Comment by Fakhruddinahoo.com — May 16, 2009

this book very good n informative…
thanks a lots

Comment by zy — May 19, 2009

absolutely informative! i’m a pediatrician who had little exposure to ophthalmology in medical school and residency. after watching 2-3 videos on this site, i’m already feeling more comfortable with the eye!

Comment by LN MD — May 21, 2009

thanks from Thailands ^ ^

Comment by off — May 22, 2009

superb for last minute revision!!!

Comment by AS — May 27, 2009

love the book. helped me prepare for ophthalmology residency in Kenya

Comment by korir — June 1, 2009

Hey Tim,

Exploring… after you gave me the book. Think I will watch these videos for more practice knowledge. I appreciate your enthusiasm and look forward to seeing the growth because of it.
Talk soon.

Comment by KarenL — June 10, 2009

i want to download ophthalmlogy, ENT, book so that i can study. can u plz help me out.

Comment by dr. khusro — July 21, 2009

This is a fantastic website!! Highly recommended, and many thanks to the creator for making it free. The information is readily accessible and can be understood by everyone. I can’t enthuse about it enough!

Comment by Mai — July 25, 2009

I attended the lecture you gave to the Florida Council Operating Room Nurses(FCORN) last month in Daytona and enjoyed your lecture more then all others combined. I have a great deal of Ophthalmology surgery experience here in FL and NY but no one ever put a twist on it’s presentation like you did. I want to get a copy of your book for my collection. Could you possibly autograph one for me.

Comment by Judy Hawrysko — July 26, 2009

Thank you so much!! from New Zealand

Comment by Mer — August 5, 2009

Oh my GOD it is very intersting book___keep it up

Comment by MARK IGA ANTHONY — August 7, 2009

I am very impressed!

Comment by Eva — August 18, 2009

How do I receive my FREE copy of this book???

Comment by Lucretia Hagins — August 18, 2009

thanks alot for your good efforts…many thanks

Comment by Haitham — September 11, 2009

How can I get a free copy of this book?

Comment by alisha johnson — September 12, 2009

Great site!! It is one of the best things i have found about ophthalmology. Keep updating! I wish more lecture videos!!

Comment by Javier MR2 HRHD Arequipa, Peru — September 19, 2009

It helps me a lot! Thx!

Comment by Usaki Ri@NTUH, Taiwan — October 11, 2009

excellent book!

please write more about other optometric/ophthalmology topics!

I love your videos, i watch them over and over.

Comment by Sharah — October 12, 2009

Exellent book

I am an ophthalmolgy resident. I find in this book a lot of important tips that we cannot find in any book.

Questions :
1- could the author develop more the chapters “in his special way” for specialist?
2- could he add more chapters concerning treatment?

Thank you

Comment by Ali Fadlallah, MD — October 20, 2009

great book
help me in my residence

Comment by dr ahmed — November 7, 2009

Hello, thank you very much for this hard interesting work.
Could you please make a short movie demonstrating the Keratometery measurement’s ( (keratometric power of the cornea, net refractive power of the cornea, and anterior radius of the cornea). It is a very complicated part of measurement for most students. Please Please make it on a manual keratometer if possible.
Thank you .

Comment by Mike — November 16, 2009

nice work

Comment by samar — November 21, 2009

Hi,great work Ineed to know about astigmatism and how I can managment?

Comment by optometry girl — December 6, 2009

I love it.. it is more than helpful for me specially the cartoons draws

Comment by pink — December 10, 2009

I would feel guilty if I didnt say thank you to you. the videos are awesome and it is so much valuable and precious to me. god bless you for this good job.

Comment by satish — December 12, 2009

I’m optometrist>>> so I want to the book

Comment by NASSER — December 12, 2009

m not able to see or download this videos??

Comment by sapya — December 22, 2009

the info provided here is just awsume..no other teacher or site can do it better as it here..!
all i can say is great wrok…thxx for sharing the knowledge.!

Comment by sapya — December 22, 2009

very thankful to Dr Root these videos helped me a lot in understanding the subject ,he has great teaching ability but i cauldn’t se the pediatrics video completely

Comment by sabira — December 24, 2009

Great website. Im in my third year of a biology degree, and this is really a great source of information for someone like me trying to start thinking forward and get familiar with subjects that the next phase of training will bring.

Comment by Seth — December 24, 2009

good book

Comment by cutie — December 29, 2009

OMG. Thank you for this resource. JUST what I needed. Fantastic intro to Ophthalmology!!! Wish this was available for Internal Med, Surg and Peds!

Comment by Russ — December 30, 2009

Hi Tom.. I am an ophthalmologist too and I had interest in cartooning and flash animation. I did a lot when I was a resident and you can check out my flash cartooning site


Glad to know that there are people like you in the universe.


Comment by Raed — January 3, 2010

amazing! i am doing finals soon and have been struggling with ophthalmology but this has made everything so clear! thank you!!

Comment by Radia — January 3, 2010

Waaaw !! What a useful book ! The cartoons draws are really helpful . I am interested in the Neurology’s chapter . Thanks a lot

Comment by Noor Alnoor — January 7, 2010

Thank you soooooooo much
Thank you
Thank you!!!

Comment by Si — January 7, 2010

Great illustrations!!! Hats off to the author. thank you very much… 😉

Comment by remo — January 14, 2010

awesome awesome awesome awesome very big thanks to you

Comment by HEBA — January 17, 2010

amazing..big time !!

Comment by anusha — January 19, 2010

I’ve found this website really helpful during our 1-week rotation in Ophthalmo! a very complicated oragn like an eye woulkd be very difficult to cover in such a short time so I was really in need for an educational site with this level of simplicity that covers all the needed material, and at the same tme attracting to study! Well done 🙂 I think it will be a good idea to add on a searching word tool for easirer access for the whole website.

Comment by med-stud — January 23, 2010

very nice book easy attractive and scientific
thank u dr.Root

Comment by mohammad — February 1, 2010

have a real easy approach… makes it easy and not confusing… may ALLAH give you the best reward for it.

Comment by king SLAVE — February 8, 2010

great video lectures!! B-)

Comment by bigshow — February 24, 2010

thank u dr root this book is very good and i want achapter about uveal tract

Comment by mostafa — March 1, 2010

Can you help me with a question I have:

What is the standard of care if a lens falls during cataract surgery? What should the surgeon do? Appreciate your answer soon.

Comment by judy — March 2, 2010

Can you answer one question for me:

What is the standard of care if a lens falls during cataract surgery? What should surgeon do? Await your answer. Thank you

Comment by judy — March 2, 2010

Your book is fabulous, and your videos even more so. You are a clear thinker, with easy to follow explanations. Thank you Dr. Root for such awesome teaching! M2.

Comment by molly — March 11, 2010

Thank you sooooo much..
Great videos, u r making things more easier n simpler! So,so wanna buy your book! But I don’t know where..(I’ll try to find it!) and btw, you sound like a very nice person! (Your students must be very lucky to have you..)
Please keep uploading your videos..thank you 🙂

-Medical student studying in egypt,but I’m malaysian :)-

Comment by quisties — March 17, 2010

Hey Dr. Root

Great job with your website.
I am a medical student that is interested in ophthalmology and i really like how you present the material.

If possible, I would suggest you to make videos on how to use the slit lamp, indirect w/ 90 and indirect w/ 15 if possible.

If you can illustrate the principles, I think all students will find it invaluable.

Thank you!

Comment by John Scuwk — March 21, 2010

great book. with wonderful.amazing videos
thank x Dr,Root

Comment by folo — March 23, 2010

Bought the book and have been enjoying it greatly. Any thoughts on doing a video or chapter on pharmacology of the eye?

Comment by Jesse Smith — March 30, 2010

well done,

we need more prgress in this work,


Comment by dima — May 1, 2010

well done

Comment by adalla — May 1, 2010

Fantastic website, and the videolectures has given me tenfolded insight compared to our lectures in medclass…! Greatful greetings from Norway! 🙂

Comment by Karianne Ytterstad — May 12, 2010

muy didactico

Comment by JENNY ONTIBON — May 14, 2010

It is amazing book

I like it soooooooooooooooooo much
it makes me thinks bout ophthalmology as a career

Comment by Dr.Nakhuali — May 25, 2010

Hi Dr. Root!

First of all thank you for these informative details its definitely a big help. However, I was looking for the second part of streak retinoscopy I found on youtube and thats what directed me to your site. Did you take it out already? If so, can you advise any website thats as good as what you have?

thanks and keep up the great work!

Comment by Dee — June 13, 2010

This is brilliant!
Thank you so much!
Am revising for my final medical exams, having struggled with eyes for 5 years, but I finally understand thanks to this website!

Very grateful, will let you know if I pass!

Comment by Sara — June 14, 2010

thanx for ur efforts …the videos r realy great
but pleas u could show us how to know the depth
of AC because it realy confused me
thanx a lot

Comment by dr_dreemy — June 15, 2010

This is a lovely piece of work. quick learning and excellent presentation.
Amazing site
Excellent work from the Author, Live long

Comment by Dr Sana — June 16, 2010

great site, i learned a lot regarding the eye
i hope there may be a quiz for every category, (e.g multiple choice type, or identification etc.)

more power

Comment by jao — June 21, 2010

i need in portuguese!!!
congratulations from Brasil.

Comment by paul — July 3, 2010

thanks for this vedio

Comment by dr.mohammed — July 25, 2010

It is great, excellant videos.
Thanks a lot for your effort.
I could learn easily in a brief time.
Please make this work grow.

Comment by Peace — August 1, 2010

Вы идиоты !

Comment by Greogry H — August 2, 2010

Thank you so much! Outstanding!

Comment by Heather Joseph R.N. — August 7, 2010

awesome book great videos thanku very much

Comment by vsid — August 16, 2010

Thank U 4 all that information>
please if any one have an optalmic book which name is (Kanski) sened it 2 me really I need it (important)>and also any information about American Academey Of Ophthalmology:

Comment by Shmookh — August 22, 2010

That’s great information
i am a new beginner in ophthalmology science and i need ur support plz cuz i have to be aware of all fundamentals of ophthalmology soon urgently and i am interested also

Comment by Mostafa — August 30, 2010

thank you so much for your usefull videos.i really interested in them and my some problems were solved.it is great.

Comment by negareh — October 4, 2010

Am a Family Physician, was looking for a good well illustrated online source to brush up on my Ophthalmology, stumbled on to your Website, I simply love it, Great Job!!!

Comment by Mohamed Meghji — October 17, 2010

Hey. I found your videos through YouTube.com, and followed the link here. I’d like to thank you for creating such a clear, accessible tomb of ocular information. From the cartoons to the narration to the live-video of cataract-surgery, it’s just great work.

*Suggestion: Make a fews vids. about which tools are available, which you prefer, etc.

Comment by I Am Name — October 17, 2010

Very attractive , informative and best of all makes everything seem easy 🙂 … thank you so much for making life easier 🙂

Comment by Hesham — October 24, 2010

Love this website!! its awesome!!

Comment by Aida — November 7, 2010

amazing! so friendly in explaining the topic. its easy to understand with the way it is presented. thanx for this site.

Comment by isolde . adaza — November 13, 2010

Question: in Chapter 3, Pimp question 13, How does VEGF from retinal ischemia, presumably originating in the vitreous chamber, manage to get to the anterior chamber to cause neovascularization of the iris?

And, does the trabecular meshwork encircle the entire circumference, 360 degrees, of the irido-corneal angle?

GREAT BOOK !!! My brain aches with new knowledge. Thanks.

Comment by Scott — November 17, 2010

the retinoscopy video is just amazing. thanks a lot

Comment by arjun reddy — November 19, 2010

1 word…fantastic

Comment by abhinay — November 20, 2010

Read this for my opthalmology rotation – it’s great.

Just wondering if you could do a simple chapter on common presenting complaints and their differentials, sort of like a problem based approach.

i.e. the differentials for red eye and how you can distinguish them with clinical history/exam and investigations.


Comment by Medstudent — November 23, 2010

I’ll have to order this book. Should have done so before upcoming cataract surgery, but with Dr. Root, I’m not concerned.

I am a retired engineer who asks a lot of questions and he can clearly explain things to me that most people don’t even ask about. He is one of those rare people with a wide range of talents that also can put things into understandable terms for non-opthalmology knowledgeable patients – as well as for medical students.

I am a patient of Dr. Root, and I love Dr. Root!

[I had to counter that previous comment about hating him, which I am SURE was made in jest by a friend – once you meet him and talk awhile, you have to love the guy!]

Comment by DonK — December 3, 2010

Dear Dr. Root,

You seem to be very well rooted to ophthalmology basics because only a person whose fundamentals are clear can present a complex matter in such a beautiful way(cartoons included!).

Dr. P. Ubed
Above Hanuman Glasses
Old Balibat

Comment by Dr. P Ubed — December 4, 2010

Thank you this homepage.

i’m KOREAN (South korea)

My major Ophto

i did fine retinoscopy video in google

i cant english very well but i understanded few..

i will visit this to study my major.

Thank you.. Thank you.

Comment by dear O.book. — December 4, 2010

Excellent video on eye trauma. Helpful in the ED. Thanks!

Comment by Dr. A — December 5, 2010

That is a very good book … Thanks alot.
eye is complicated and this clarify alot of things.

Are there any other books as this for other science like for ENT ?
i really need something like this for ENT.

Comment by Azhee — December 9, 2010

This book is great and easy enough for a lawyer to understand!! Dr. Root’s the man!

Comment by CatL — December 9, 2010

Can u plz describe me how to carry out diplopia charting

Editor: For a basic approach to diplopia charting, watch this lecture.

Comment by Sakar Subedi — December 12, 2010

its a gr8 book lots of information …. its just awesome….thnks a lot

Comment by foram pandya — December 21, 2010

its a great book lots of information …. its just awesome….thank you …

Comment by foram pandya — December 21, 2010

this is very nice… you should create a Facebook Page for this.

Comment by Devanshu Arora — December 25, 2010

really incredible masterpiece!!!
i’m sixth year medical student in Taiwan, i totally studied under Dr. Tim Root…ha^^

Comment by mamaya — December 28, 2010

really incredible masterpiece!!!
i’m sixth year medical student in Taiwan, i totally studied under Dr. Tim Root….ha^^

Comment by mamaya — December 28, 2010

An interesting read. Looking forward to the next installment on the inner ear.

Comment by Wil Mays — December 29, 2010

The cartoons were cool. Keep drawing man!


Comment by Keshan Jackson — December 29, 2010

Very good

Comment by Abhijay — January 4, 2011

Thank you doctor ….

very very nice, helpfull and extremly wanderful book.

keep going ^_^

Comment by Emad — January 8, 2011

Thank you so much! I’m a medical student and have an exam coming up! I needed a quick revision on the anatomy of the eye. Your videos helped me understand the concepts completely! I will definitely be purchasing your book! Thank you!

Comment by Amy — January 8, 2011

Very nice.
I hope you all success in your works and life.
Great book.
with best wishs
Russian Federation

Comment by sasha — January 9, 2011

hi dr tim, From Perú, congratulations for this web site, it will be useful for our students and optometrist here. I´ll share this page for them. I.ll be sure they like this.
Thank you for making teaching easier.

Comment by mayra agurto — January 10, 2011

ever so helpful web site conngrats!

Comment by ali — January 13, 2011

thanks so musch for your encouragenment and your helping for the students who are studying in the faculties of optometry and visual science specially in sudan!
“somal`s students in khartoum”

Comment by Omar Abdlla — January 21, 2011

thanks so much!!! every time and from any whereeeee………….frooom somalia

Comment by Omar Abdlla — January 23, 2011

Your teaching tools are a fabulous gift. Thank you so much for sharing them with us.

Comment by Margaret Osborne — January 24, 2011

hey Dr. Tim Root,
I had missed most of my clinical classes, and your videos helped me to catch up. Thank you for your endeavor. I wish there’d be more people like you who would post such brilliantly composed videos for medical students and doctors alike. Keep up the good work!

Comment by Nepali Keti — February 4, 2011

Very informative! You need to make an iphone app!!

Comment by Kasey Zartun — February 17, 2011

Great site!! It is one of the best things i have found about ophthalmology. Keep updating! I wish more lecture videos!!

Comment by DR,AHSAN RAZA SYED — February 19, 2011

Its great book I enjoyed it so much ♠♠♠

Comment by JOANNA — February 20, 2011

a very very very nice book…very informative…thx 4 such a book… 🙂

Comment by Aisha — February 23, 2011

GREAT BOOK!!! CONGRATS….the book help me a lot! Greetings from Guatemala!

Comment by alma — February 26, 2011

Dear Dr Tim Root,

Indeed, I am absolutely very delighted to read the Opthobook and watch videos, it is very testfully done, excellent information and I admire your simple but very effective presentation that makes the subject matter very easy to understand. You are an excellent teacher and admire your generosity to put the entire book on the web and great service to the medical and nonmedicalcommunity
My eternal well wishes to you Sir.

Comment by Jag Purohit — March 6, 2011

Excellent, about to start an ophtho rotation tomorrow and I could not have imagined a better website! You guys have done a fantastic job!

Comment by Ben — March 6, 2011

can u plz tell me how can i subscribe for this website…bcz i need to learn somthng related to ophthalmology throug this website ..
thnx alot

Comment by blue sky — March 8, 2011

this is areal usefull website for links…of ophthamology really concepts are going to clear now thanx dr ali tayyab

Comment by baker — March 10, 2011

I am interested in finding out where you purchased the fixation wand used in the eye movement videos. The wand had a yellow ball and was used to have the patient follow it with eye movement to detect the palsy being evaluated. My e-mail address is info@vsofb.com. I really have enjoyed your videos. Thanks in advance for the info.

Comment by Dr. Debby Feinberg — March 12, 2011

Dear doctor
Iam very please to read the glaucoma topic only and i have gained a lot. It is a fantastic book and ineed to have your book, but i live and work a war thorn country of Somalia . I can not buy or even pay the book and i can not download my favourite book in optholmology

Thank you for such a book

Bye Dr. Osman

Comment by Dr M Osman — March 15, 2011

great info
thanks a lot
it wl b good 2 hv uveitis in dis book

Comment by dr nilesh patil — March 16, 2011

I m a big big fan of this book.i m following this book since 2008 and till now when i’ve decided to continue my career in ophthalmology its helping me alot. Its the greatest thing i’ve ever searched.

Comment by Dr.kainat saleem — March 18, 2011

I’m a final year medical student in Brisbane, Australia. This site was recommended by my Ophthal registrar. Thank you so much! The videos are amazing and so easy to follow. I wish I had a resource like this for all my rotations!

Comment by Fiona — March 22, 2011

You put together the fun of life and ophtalmology!
thank you for that!

Comment by Stefano — March 27, 2011

Dear Dr. Root,
I can’t thank you enough for this concise, interesting, and fun to read intro to ophtho! I certainly would have loved to have a book like this for all my rotations. I particularly loved all the videos, and would definitely appreciate video lectures on more concentrated topics–perhaps a level 2 ophthobook in the future?

Thanks again for all the help!

Comment by Julia — April 12, 2011

very bore book

Comment by ajay — April 19, 2011

iam sorry yhis is the great book iam sorry extrimily

Comment by ajay — April 20, 2011

hey! this is some really awesome work! do keep it up! =)it has helped me alot considering im not very fond of ophthal as a med student!!=(
could you please put up lectures on disease of eyelids,strabismus,nystagmus,etc please? i would be really grateful!

Comment by Sheena — April 21, 2011

The most impressive website I have ever seen! Thanks for the amazing work, you make really difficult concepts so easy,fun and interesting. This is the way ALL specialties should be presented!!!

South African Medical Student

Comment by Neville — May 11, 2011

Great book,congratulations!!
Thank you very much for your huge effort,it’s really amazing,
keep it that way 🙂

Comment by SoumiaSaraa — May 15, 2011

I appreciate this online book. It is very insightful and reads very well. I recommend it for all medical students and medical doctors.

Comment by John Y. Mvula — May 19, 2011

thank you for this book we need more

Comment by zoz — May 20, 2011

Thanks a lot, very nice website…
Cascavel, Brazil

Comment by Mohamad Sleiman — May 27, 2011

really very good job. thanks a lot Dr. Root

Comment by partha — June 4, 2011

Excellent and Fantastic works for All …….
Thank you very much ……
Very much helpful work for us……

Comment by drbillal — June 6, 2011

i’m an undergraduated student of Zhejiang University.China, major in opathalmology. This website takes great information to me and do help to me. Thanks to ETA, and all staffs who contribute to the foundation and website.

Comment by Bai sheng,Xu — June 9, 2011

I would be very grateful if u could show me how to handle a patient who comes in a clinic for a contact lens. I want to know the types of contact lenses and its selection for an individual.

Comment by Sakar Subedi — June 28, 2011

first of all, Thanku 4 dis useful site!
Hw to veiw vedio lectures thru my mob(nokia 5233)?

Comment by Aparna — July 5, 2011

What an excellent, excellent website: very clear teaching, superb videos and well-written texts. And of course, the charming illustrations and cartoons 🙂
Just fabulous… Thank you for all the effort and passion you’ve put into this.

It is so very inspiring, to see the amount of work you’ve put into this… benefitting so many.

Very best wishes,
Sui Wong
London, UK
(a Neuro-ophthalmology Fellow)

Comment by Sui — July 14, 2011

Am a new guy here and i also see the comment of the rest i want to study and become an ophthalmologist in future that is why am seaching the net for this and i will be looking forward to seeing more. Thanks

Comment by fakolade kehinde — August 3, 2011

a great job. u really have made that subject interesting so that one will love to study it. and the way u presented the videos is unquestionable. thanking u again.God bless u.

Comment by partha — August 3, 2011

thank u soo much,i was having difficulty in ophthalmology until i found this website.its really awesome,thank u man.

Comment by Kavitha — August 20, 2011

very nice…some of the best sites available for free… thank you

Comment by abhimanyu — August 23, 2011

very helpful and great site..thank you all.

Comment by s n chowdhury. — August 28, 2011

Dear doctor Root,

we just read your book and watched almost all your videos and were ready to go to take an exam from ophtalmology. Just keep on building this website. The way you explain things is so natural, it makes information just flow into our heads..Thank you for this.

Jan & Klara from Prague, The Czech Republic

PS: will you talk about strabism and LASIK a bit more?

Comment by Jan & Klara — September 7, 2011

sir plzzzzzzzzzzz do something for direct and indirect opthlamoscopy? i m medical student and in opd very few r interested to show these procedure to undergradute student..:-(

Comment by lovely — September 8, 2011

I love your courses very informative. I want to take abo but every course or website I visit are either more confusing or no help at all. I was wondering if you could do a lecture on topics like metric system, electromagnetic spectrum and formulas. Your lecture are the best I seen very easy to understand and fun. Please help me pass the A.B.O.

Thank you

Comment by Monica — September 8, 2011

really very nice videos. thank u sir

Comment by partha — September 16, 2011

special thanks from Iran . its wonderful.

Comment by mehran — September 21, 2011

very helpful information !

Comment by katherine vu — September 23, 2011

i came across the videos on youtube and they’re absolutely fantastic!
you’re doing a great job at making ophthal easy for an undergraduate 🙂

Comment by jayati dureja — September 24, 2011

i love this site, very informative!….more power to you 🙂

Comment by pinay_od — October 3, 2011

this question has come up twice in recent months when ordering contact lenses…ie OD -1.00-0.75×060
OS -1.25-100×0130
order two boxes OU….for the above prescription

One of the doctors told us this is incorrect, that OU only referred to the prescription being the same in each eye, not that we were to order 2 boxes for each eye…I don’t have a problem with being compliant with a drs. request but it sure has stirred up a hornets nest at work, to the point the GM (unlicensed) will have a talk with the doctors that we didn’t work for them and they don’t need to tell us what to do….so I’ve been looking in my dispensing books and have found OU as “both eyes” but I have not substanciated clearly if it refers only as OU same prescription eyes or is it more broadly used i.e., 2 boxes OU meaning I want 2 boxes for each eye no matter what the prescription…does a GM really have that much authority to tell the doctors the tecnical part of their job. Also today we were told we can dispense contact lens boxes before the patient is finished with their final progress check and that is was ok cuz we work under doctors license of the owner of the chain from KT….uhm…real questions here….I called state board got a busy signal all day. Reviewed my TN Rules…0490-01.-10 p.11 and 0490-01-.22 p.40 paragraph 1 states “a dispensing optician may not fit contact lenses except in the presence of and under the direct supervision of a licensed optometrist or ophthalmologist” direct doesn’t sound like a doctor licensed living and working in another state to me…also paragraphs a and b state “upong delivery of a written prescription by an opthalmologist or otometrist, the licensed dispensing optician will deliver the contact lenses to the patient

Comment by ccsd0940 — October 6, 2011

i appreciate on this web material and videos

Comment by Bakwel — October 8, 2011

sir u r just amazing………..

Comment by hemangi — October 10, 2011

Truly helpful

Comment by Dr Ahmed Al Montasir — October 17, 2011

Dr. Root,

Your website is amazing. You are truly awesome. I want to have your children.(if you are not married that is)

Comment by Lida Fatigua — October 31, 2011

thank you dr tim you are great , make easy simple and easy . again thanks from egypt .

Comment by aly — November 7, 2011

Thanks dr.root for amazing work

Comment by Riad — November 14, 2011

You have a very nice site! Very informative and well written. Keep up the great work.

Comment by Laura — November 16, 2011

Thank you so much for an amazing website! An absolute lifesaver for my exam 😉

Comment by Tina — November 21, 2011

i love thissssssssssssssssssssssssssssssssssssssss websiteeeeeeeeeeeeeeeeeeeeeeeee

Comment by ,mjilkjgnhjj — November 22, 2011

great video lectures
Thank you so much for an amazing website

Comment by omima — November 25, 2011

from this site i have learnt to appreciate things about the eye that i never thought i could understand.its a great work you are doing over there.please keep it up. thanks so much Dr Tim and his ophthobuk group.

Student optometrist (knust-Ghana)

Comment by Richy — December 9, 2011

these videos are simply awesome, specially for we undergraduates. but it would have been more better if u discuss neuro ophthalmology in somewhat more details, specially the visual field concepts

Comment by partha — December 16, 2011

I’m a Teacher of the Visually Impaired and this is a GREAT resource – thank you! I plan to share the link with many parents and colleagues!

Comment by Kevin — December 19, 2011

Fantastic resource! Thank you!

Comment by Kim — December 28, 2011

I love this site. I am rotating through ophtho for 2 wks and would be lost without this. Tim Root makes it all so simple.

Thank you so much!

Comment by Vicky — January 5, 2012


I am a 5th year medical student from Jordan. Your site was suggested to me by a friend of mine who got a very good marks in the Ophthalmolgy rotation. Because of how excited and how impressed my friend was, I opened your website as soon as I got home. “I watched them not only because of how informative they are, but also, because how funny the doctor is” My friend told me.

Only after watching one of your videos, I am here writing this comment. I do not need to watch more videos to judge the quality of these videos… They are absolutely amazing!!! I did not know that ophthalmology is that interesting and easy to understand.

Finally, one small suggestion: I suggest that you create a youtube channel. If you had a youtube channel, I believe that you could now have thousands of subscribers. I would be honored to subscribe in your channel.

Thank you.

Comment by Moa'bite — January 19, 2012

you really know how to teach. i have never seen anyone teach like you do

Comment by Adnan — January 23, 2012

I would like to add my name to the throngs of happy users with a few additional comments. I am a 4th year medical student at USC in California. We are privileged to have the Doheny Eye institute and receive instruction from world renowned physicians during our medical school lectures and Ophthalmology rotation. In preparation for my rotation, I began reading and watching video’s from this site. Once on the wards, I was delighted to find that our attending physicians were actually referring us to Ophthobook.com as an ideal source for after hours studying and exam preparation. I have been comparing notes with our official didactics, other textbooks, and this resource and can say that the information here is entirely consistent if not superior to the most authoritative texts and lecturers I have encountered.

I must also make comment on the fact that Dr. Root has made superb use of mixed media. These are not merely powerpoints with embeded video’s. Animations, text, videos and intelligent summarization make this a model modern teaching style.

Thank you so much for this incredible and free! resource.

Comment by Mischka — January 25, 2012

Thanks so much for this informative website, especially the videos- concise, funny, memorable, easy to understand. Couldn’t ask for a more perfect intro for med students. Only wish the specialty I’m going into had a resource this cool!

Comment by MJ — January 26, 2012

great job sir!!!!!!thanks.

Comment by dr pramod — January 31, 2012

I adore your work uptil now..hope u can add more help by publishing eay learning books for post graduate opthalmic studies..

Thanks. From Egypt

Comment by ArwA Beltagi — February 4, 2012

respected sir
i don’t know where to ask a question so i am writing it in your comment box…
may u please tell me why can’t i use a retinoscope to do ophthalmoscopy and vice versa

i have tried many online and offline resources but could not understand… please e-mail me if u see this and like to reply… thank you sir

Comment by mark — February 8, 2012

Your videos were very helpful.The best I have seen.Can’t wait to get the book.
Thank you so much.

Comment by Martha Williams — February 12, 2012

very good

Comment by azad — February 23, 2012

i am diabetic, 38yrs, eye burn during welding flash suggest the eye drops

Comment by kumar — February 24, 2012

In my culture, when you visit and you are given something to eat, you thank your host for the tasty item before you actually taste it…because you know they laboured and put in their all to make the meal…
So, i thank the Dr. whose efforts we are all privileged to enjoy and help us learn!
By the way, i have an insatiable desire to study ophthalmology, so i am certain this book will provide me with the wisdom i need!
Thank you so much!!!

Comment by basa — March 3, 2012

I simply LOVE it!!!!

Comment by Einav Madmony — March 3, 2012

Amazing!!!! I wish my teachers could teach like that…….

Comment by shazli — March 4, 2012

Thank you so much for this wonderful book. It has helped me a great deal in my externship!

Comment by Jenn — March 5, 2012

hello .. i am AdeL from yemen .. medical student and i like your book and videoes .. i am just askin u …can u tell us r u goin to do another video … i hope u reply me back
Good luck

Comment by Adel — March 14, 2012

Thanx a lot for this great creative book…videos were amazing ,lecture notes were more than great,,they r clear to the point and straight forward and has all I want to know aboutboptha as a Family Dr.

U made opthalmology so easy 🙂 but sure we do need the skills heheh…

Looking fwd to more video and making life easy notes and videos..it’s really impressing the hard work u did to make opthalmology easy….


Comment by Reema — March 15, 2012

I’m feeling grateful, thank u
Keep it up…..

Comment by Ambuj — March 16, 2012

Your material is incredible. What a pity you tried your hand only on ophthalmology. I’m recommending this site also as a course on didactics. Perhaps something of your art will get attached to a lot of (so called) medical teachers…

Comment by Dr. Bernardo Hochman — March 26, 2012

You have no idea how precious has been this material for me (just started first year residency). You should be doing this thing professionally! Thanks a lot!!!

Comment by João Paulo (Brazil) — April 6, 2012

Thanks for this book! I’m studying Tecnología Médica in Chile, and all information publicated in this page has been useful for me!! Muchas gracias!

Comment by Yasna — April 11, 2012

hi i’m from the philippines, ur book is incredible,it is easy to understand and very helpful. truly it is the best intro to optha book ever. maraming salamat! 🙂

Comment by dan — April 14, 2012

What is it that people that have 20/10 have that people with 20/20 don’t have? It is the cornea, the lens, or the retina?

Comment by Rob — April 17, 2012

I just want to say THANK YOU Doctor Timothy Root

(( you have taught me and you have influenced me ))

I ask Allah to guide you to make the right choices in every step of your life

Comment by Mosab — April 21, 2012

Hello Tim,

I must confess that you are God sent! You are simply amazing and an expert in basic education.

Pls kindly post video of how to effectively use the BINOCULAR INDIRECT OPHTHALMOSCOPE. This technique is confusing to me.

Pls TIM help kindly as I enjoyed the tips on SLIM LAMP BIOMICROSCOPY!

Thanks in advance sir!

Comment by Ozone — April 22, 2012

Thank you so much for having your lectures on YouTube and reading materials online. Access to both, has helped me educationally & assisted me to understand my new job as a scribe at a Pediatric Ophthalmologist office. I know that Ophthobook.com is utilized for medical students, but just wanted you to know it has helped me keep my job. Also, I have ordered your book on Amazon.com to keep @ work.

Comment by Jackie — April 25, 2012

Thank you do much!! I’m a second year medical student and this was an absolutely vital learning tool for me. It’s clear, straigtforward, and gets right to the high yield points of opthomology. I would not have been able to get through my course without this book.

Comment by Rachel — April 28, 2012

Hey Dr. Root,
Just to let you know the Neuro-Ophthalmology video part 1 cuts off at 8min 50seconds….I was hoping to watch the whole 24 minutes since it is so high-yield!


Comment by Ryan Villegas — May 2, 2012

thanks for all

Comment by dr.ibra — May 6, 2012

Hi Dr.Root,
I’m presenting about Deep Anterior Lamellar Keratoplasty (DALK) and I wanted to construct a simple model showing how the surgery goes and the “air bubble technique” but I just can’t think about the appropriate tools that can simulate the layers of the cornea and the injection of air. Can you help me, please? ’cause I know you’ve got a spectacular, super creative magnificent mind 😀

Comment by Nada — May 12, 2012

Hello dr.root!

i loved this site and i just shared it with all students of my class ! getting good feedback ! thankssssssss much !

Have a nice day 🙂

Comment by Hajar — May 18, 2012

Hey dr. Root!

You’ve made ophthamology fun and understandable!! Thanks alot, keep up the good work!

Greetz from the Netherlands!

Comment by Sarah — May 24, 2012

hey Tim,

‘m balu doin mbbs in india .
u have made me fall in love with optho..
a heartily thanks to u …wish i cud meet u ever .

an i hv one problem ..please make one video on A and V phenomenon ..i dint get it …

Comment by b@lu — June 3, 2012

Wonderfull to learn ophthalmology,like this.can we colaborate and translate to spanish language..?
Greetings from Spain

Comment by Laureano rementeria — June 14, 2012

well this is a wonderful site
greetings from Recife in Brazil south america.

Comment by claudioagmfilho — June 17, 2012

Excellent work, please keep doing so … This is like a complete go to book for students like us.

Comment by Nik — June 18, 2012


Comment by hoda — June 23, 2012

FINALLY! A site that helps! I’m changing careers (from RN to Optom. Tech) and the abbreviations are so helpful. I am the only tech for 3 doctors and I was having to learn on my own. I know Nursing but Optometry is something totally and this site is what I needed! Good Job!!!

Comment by Deloris — July 6, 2012

Sería genial si los vídeos estuvieran en español.

Comment by Sharo — July 22, 2012

i wish you have some lectures with CE credits simply because i’d rather do my 20hrs CE listening to your lectures than to anyone else.

Comment by tetters — July 27, 2012

very nice place to learn, excellent

Comment by dr dk verma — July 29, 2012

we need more video optometry related

Comment by jahir — August 7, 2012

somebody who read this book, plz tell me that is it appropriate book for MBBS student

Comment by sajid — August 8, 2012

Very informative, clear and amusing. I hope to teach medicine someday with the same technique that you use — clear diagrams through own animations, concise, interesting and makes learning very fun. 🙂 An inspiration indeed.

Comment by Christine — August 15, 2012

How about some contact lens examination videos.. I am waiting for it for such a long time!!!

Comment by Sakar — August 27, 2012

anything on Keratometry? especially manually i find that to be most difficult. thanks and great videos and lectures truly helps out!

Comment by Joe — September 20, 2012

thats an awesome book (y)

Comment by fahad khan — September 22, 2012

i am doc.alex bubalo

i think u re great mister tim and all of u .

super cool and great people

does anyone have a apk file to send me
this android
Ophthalmology Exam Flashcards

i know to instail it dirrecly
if someone has these flash cards
exam tests it helps me to stay in shape
or okap pdf or ppt what ever …
thank u great people
alex saluda a vois
alexander bubalo o alex o a1ex.b.

Comment by alex.b. — September 30, 2012

Bula, this is a really helpful book which I was actually eager on reading…not too deep for us med students but at the same time not depriving us of vital infor…thank u so much Dr Root!!!

Comment by Fiji — October 1, 2012

I love your video. They are amazing, my favourate one has to be the Slit lamp one.
Great job and thank you for this amazing website…. BIG FAN

Comment by Hasibullah — October 4, 2012

thanks, im an opthalmic resident an taking clinical classes of undergraduates. this is of great help. thank you again

Comment by dr ritvija dixit — October 9, 2012

I didn’t get to finish all but this great. Made me understand the topics better.

Comment by Ishi — October 9, 2012

It is a very nice book indeed written on ophthalmology. The videos are quite illustrative and helpful in understanding. Thanks to the author.

Comment by New mexico lawyer — October 12, 2012

About a month ago I got my broken orbit (small orbit fracture )and i recover fast, but now I am facial pain,nose and cheek(sinus Area) .what must i do?
Pls help me?

Comment by Ali reza — November 9, 2012

Very helpful. Thank you for posting these videos.

Comment by Scott — November 12, 2012

Very helpful. Thank you for posting these videos. I loved every single one.

Comment by Scott — November 12, 2012

too good…! thanks …!

Comment by a fan — November 13, 2012

Thank you very much for this web site. Timothy Root M.D is a great teacher, he explains things very beautifully

Comment by muhammad suhail — November 30, 2012

Hi, Dr Root.
We love your video on foreign body removal.
My name is Jake Isserman. We are working with  Scott Weingart of the
EMCrit Podcast; and Rob Orman, we are the video editors for the
upcoming edition of Roberts and Hedges. Roberts and Hedges is the most
popular procedure guide for emergency medicine. We are gathering
videos for the online version of the text.
We want your permission to include your video. You will retain all
copyrights! In exchange for Elsevier being able to publish your video
on the text’s website you will get CV claimable chapter authorship and
a free copy of the text. You can link back to your site or project on
the video page as well.
If you have questions, please respond to this comment.

Comment by Jake Isserman — December 3, 2012

You are the best friend of the first year ophthalmology resident, and sure for the the other years, thanks from my heart’s depths .

Comment by Eyad Shareef — December 4, 2012

The patient has retinal detachment 6 years now on both eyes. She did the laser surgery on the left eye when same was much younger. The eye vision is great after doing routine check ups by the eye surgeon. Now the patient has a very big problem on the right eye, “same is seeing half vision and half dark”. When she went to the surgeon today for check ups, same advice her that the retinal detachment is huge and surgery can be perform, but chances are the vision will be the “same half vision and half dark” on the right eye. So she couldn’t afford the surgery on time. Can you please advice me properly Sir/Miss! If she have this surgery in 2 or 3 months from now, can this still help her eye from getting that lost of vision for life.

Comment by anson — December 16, 2012

keep up the good work

Comment by Manjula — December 17, 2012

I can’t thank you enough for this amazing site,, everything here is very useful and made simple.
I’m truly in love with this website! the BEST EVER! thumbs up 😉

Comment by Rana — December 21, 2012

This website is an invaluable tool in learning opthalmology. A subject which had previously appeared baffling now makes sense! Thanks

Comment by Eamon — December 22, 2012

overall good website, thanks!

Comment by facts — December 26, 2012

Thanks for this wonderful website. I wish you had taught ophtho when I was a medical student.

Comment by Huge Fan — January 1, 2013

thank u for your great effort
pleas can u learn us the investigations of ophthalmolgy

Comment by Dr.m.f — January 10, 2013


Comment by 牛佳媛 — January 14, 2013

I am a chinese ophthalmologist,I like this website very much.Thank you!

Comment by Jia yuan Niu — January 14, 2013

Really, really helpful resource for an undertaught subject. Thank you so much!

Comment by shaun — January 25, 2013

Very useful to start Ophthalmology. Thanks for your contributions to Opht. training.

Comment by S.Sahin, MD — January 26, 2013

I hope someone could helpe me . I’m a opthamoligest I graduate from ukrain and I came to the USA. Memphis ,TN so I could worke her as opthamoligest but I don’t know wher to start from and who to ask about what I need to study or what kind of examination I need to do . And every university I ask here they don’t now because their not spacilized in opthamolig that’s My email

Editor: Masoud … you are what we would call an FMG (foreign medical graduate) or IMG (international medical graduate). The process of matching in ophthalmology is much more difficult in these situations. You typically have to pass the USMLE tests to obtain your medical degree in the US. You’ll have to go through an entire 4 year ophthalmology residency training program in the USA to practice in the USA. You’ll apply for ophthalmology positions with the “match process” along with other USA candidates. The match rate (even with your experience) for IMG applicants is not very high (around 6%) but it can be done … but you may have to put in some time doing research to become a better candidate. The first step, I believe, is to pass (and do really well) on your USMLE tests. You may want to contact your closest medical school and enquire about that process … or continue searching this route online.

Comment by Masoud — January 26, 2013

it made me a lot easyyyyy

Comment by faryal — January 28, 2013

This is very wonderful website,so informative.kudos

Comment by Michael — February 12, 2013

I like things that make our lives easier and this book is definitely one of them, ophthalmology can not be more easier. Thanx Tim

Comment by mryamalmulla — February 15, 2013

Follow us on Twitter! @OphthoBook

Comment by OphthoBook — February 16, 2013

In your video “Super Eye Palsies”, you misspoke at 3:19 saying “lateral” rather than “medial”.

Tim Root: Yes, I noticed the typo before I uploaded the lecture. Unfortunately, with live video lectures there is no good way to “correct” these verbal typos without re-filming the whole project. Instead, at that point in the video I placed a small pop-up text comment that points out the error. You may not have seen this. Thanks for commenting!

Comment by Talmadge Cooper — February 19, 2013


Comment by med — February 22, 2013

I love this book, I have the printed copy and keep it in bag to read to from university. Only problem- the book I received smells like french fries LOL

Comment by Sadaf — February 22, 2013

You are the best
and ophthobook is the best too 🙂

Comment by Mohamed Emad — February 22, 2013

god of almighty Tim you truly are amazing. Well done. I wish there was one of you in every specialty! (Do you have any clones working in Neurology?!)

Comment by G Gaughran — March 4, 2013

from this site i have learn to appreciate things about the eye that i never thought i could understand.its a great work you are doing over there.please keep it up. thanks so much Dr Tim and his ophthalmic group.

Comment by GHULAM MUHAMMAD MAHAR — March 16, 2013

This is a very informative and fun site! Thanks for giving us this free website that has some very valuable information and learning videos. Thanks!! COA student

Comment by Deanna Giardullo — March 26, 2013

We wish to purchase the following image:

TODAY :), to use in a deck. Is this possible? Please contact me.

Comment by D Oliver — April 3, 2013


Comment by 段 — April 6, 2013

many thanks to you dr tim root

Comment by mohammed — April 15, 2013

i forgot to mention
i just bought your book online

god bless you

middleeast fan

Comment by mohammed — April 15, 2013

This is great book. It’s good for me and my colleagues. I see it everyday. Thank so much

Comment by Long Phandang — April 19, 2013

This site has taught me a lot about ophthalmology.Your video on retinoscopy is one of my favorites and i always recommend it to colleagues and other students.Thank you for this great effort Dr Tim.Keep up the good work:)

Comment by Ambreen Maqsood — May 1, 2013

Hi Dr. Root! What you did, especially with the videos is amazing! I wanna thank you for making the videos because it really helps in my reviews for the board exams. Me and my classmates benefit from your vids so much.

-Aimee, Philippines

Comment by Aimee Samaniego — May 8, 2013

are there a french version of this book ?

Comment by halim — May 13, 2013

GTR ( great teacher root ) but i speak well frenche and need ur book in french ?

Comment by halim — May 13, 2013

What a fantastic resource you have created and shared with the world. Thank you.

Comment by Sam — June 1, 2013

I just bought the book online. So excited to read it 🙂
every review i read said this book is awesome. I recently got accepted to optometry school and i start in the fall. this is going to help me so much!

Comment by Mark Hakim — June 1, 2013

Dear Dr.Root could you please provide the site with videos about the following :
Maddox rod test
Maddox wing test
Worth four dot test
After image test
and I will be grateful for your effort .
Dr.Eyad Shareef

Comment by Eyad Shareef — June 2, 2013

Dear Dr. Root

Am a medical student from London (university College London) and your book (which I have bought) is a fantastic resource. You have simplified and actually TAUGHT ophthalmology – unlike so many doctors who do not actually EXPLAIN.

So for that I would like to thank you

Secondly, I am looking for a resource to explain retinal artery and retinal vein occlusion as I believe that there isn’t such a chapter on these topics. Would be very grateful if these topics could also be covered – but I’m also sure you have your reasons for not including them.


Comment by Tahir Nasser — June 6, 2013

Thanks a lot! Awesome explanation and has everything anyone ever needs to understand Ophthalmology! Just got what I needed.
Medical Student, Nepal

Comment by Trilok — June 19, 2013

it’s very interesting! I learned this book from a BBS. I wish more and more ophthalmologist would find it and love it in our country.

Comment by Zhaobo — July 14, 2013

dear doctor,

i am a fan of your book.
i want it to be my textbook.
i want you to publish this book, i swear its going to help a lot of medical students. your way of teaching is simple but awesome. you speak and write in friendly way. not like other books and videos , watching which i feel like reading a newspaper, way too boring . i hope i’ll find a book called opthobook in market sooon, or may be you have published one . if you have , please let us know.i want it .
from India

Comment by rehana — August 4, 2013

God bless you for these vids.

Comment by Abbas — September 4, 2013

all my respect

Comment by nadim — September 22, 2013

love it. just on time….u re awesome. we need more masters like u to guide us for all other specialties..

Comment by Aybike — October 2, 2013

It’s very good.I will learn it carefully.

Comment by hongshengzhang — December 4, 2013


Comment by ROXy wall — December 5, 2013

excellent submit, very informative. I’m wondering why the other specialists of this sector don’t notice this. You should proceed your writing. I am confident, you have a huge readers’ base already!

Comment by Gretchen — December 7, 2013

Is it ok to wear a patch. Is it detrimental to curing this nerve. I cannot imagine functioning without the patch.

Strangest thing I’ve ever had. no one seems to have a grasp of any part of this. I really want to know is wearing a patch is ok. I’m sure there will be more questions later. Thanks to you all, and I cannot imagine some of you dealing with this for 3 years!!! Bless you.

Comment by lori saad — December 20, 2013

You make it look so easy. Kudos!

Comment by pratyush — January 24, 2014

Dr. Root, you’re awesome! It’s so interesting, funny and super useful to learn ophthalmology with you! Thank you very much! I wanna shake your hand. You do a GREAT job! Wish you good luck!

Comment by Anton — February 9, 2014

I am a COT with over 20 years experience in ophthalmology and I use ophthobook.com all the time. Every learning tool I have ever used has been VERY well written in easy to understand terminology.

Thank you Dr.Root, you are a great teacher!

Comment by Tina Phillips — February 25, 2014

amazing information!!!! really loved the manner in which concepts are explained

Comment by owais khan — March 5, 2014

great,, thanks alot . It’s so interesting

Comment by Nadeen — April 10, 2014

Cool videos.. Gr8 service to medical students!! Keep up the good work doc. You rock..

Comment by Harry — April 13, 2014

can i personally contact dr root???? i want to be his student… what i have to do to get training for postgraduation from dr root

Comment by dr.kainat — April 13, 2014

I recently purchased the book and started reading it. Will your book help me pass the COA test in NY?

Comment by Ann — April 18, 2014

hello dr.
I am a student of medical sience in iran
i search my problem in your site and i find them .
i useing your video for my presentation in my class
you have Great book…very informative and very intresting
i love all your video lecture …..

Comment by malihe razavi — April 18, 2014

Dr. Root: I just purchased the Ophtho book and looking forward to reading it. You should charge a fee for a subscription to your videos – I know you have put in many, many hours into this project. I have been referring all my optometry friends to your resources. THANK YOU!

Comment by Lisa — May 22, 2014

Hi Dr. Root, I absolutely love your material. I just bought both of your books and they are awesome! I am beginning my Orthoptics training soon and your videos and podcasts have been a huge help. I did want to ask you what “spots on the retina” might mean. Are they common? What are some leading causes? Thanks!

Comment by Tony — June 19, 2014

great book i have ever seen…..very funny and comprehensive lectures….i never feel boredom by reading it yet medicine z very boring……hats off to DR.ROOT……..tnx sir

Comment by irfanullah guhar — July 2, 2014

very nice book.a best book for understanding the concept of ophthalmology for medical students.

Comment by sanjaya — July 9, 2014

very helpful video lectures especially for medical students.

Comment by usaid — July 10, 2014

Dr. Root,

I am a 3rd year medical student currently on a 12 week surgical rotation. I will be starting 1 week of ophtho elective week. Even in my busy rotation, I had time to read and enjoy your book in preparation for my ophtho elective. I want to be able to teach like you do. Thank you for what you do.


Comment by J. L — July 18, 2014

I am a fourth year medical student preping for my ophthalmology rotation. This website has been a HUGE help, it has already helped me not make a fool out of myself several times in clinic. Thank you so much for making it free to access it is an invaluable resource!

Comment by E.C. — July 26, 2014

Oh my GOD it is very intersting book___keep it up

Comment by Adnan — August 2, 2014

You make it all seem so easy, am an Optometrist practising in Zimbabwe and just love using your lectures for CPD, it’s always much easier when a lecturer loves what they do and you clearly do-may you never tire and keep up the good work!

Comment by Lynett — August 19, 2014

I am a current second year medical student- I struggled with the innervation of the eye during anatomy and basically memorized it to get me through the test. After reading your section on neurology I finally understand the basis of nerve lesions we have been studying. Thank you for making this resource available to us.

Comment by Medical student — August 24, 2014

I’m a medical student from India … U know what,this book,lectures are simply awesome…appreciate all hard work..
Thanks a lot for these.. 🙂

Comment by Subha — August 27, 2014

THANK YOU soooo much!!!
I am an optom in my training year in England and have my finals in less than a week!
This website/book have been so informative, and I truly agree with your philosophy, that if its fun, you will retain it!!!

Thanks again!! I wish my uni lecturers had been more like you.

Comment by Layla — September 7, 2014

I love your book.It’s an pleasure read it.

Comment by Andrea — September 14, 2014

I am a student of optometry
the videos are very good
thank you a lot.

Comment by dorna — October 19, 2014

Makes it all so easy…thank you sir.

Comment by Iyami Nathan — November 16, 2014

Dr. Timothy Root,

I encourage you to keep up the good work in promoting Optometry. Upcoming Optometrist like are benefitting much from your site.

Comment by Hardy Mbadugha — December 9, 2014

excellent sir!

Comment by prabhakar — December 22, 2014

Amazing work!

Comment by Cohen — January 1, 2015

We are promoting this resource to our medical students and medical staff. I think Timothy Root’s slit lamp examination video is one of the best and most engaging educational online videos that you will ever see.
I couldn’t stop watching, and given we are all busy, this sets the benchmark.
Well done, we admire you all the way from Australia

Comment by Jaycen — January 2, 2015

i totally loved the book and the videos….. thankuu.. for making my life easier.. it would be great if u had such books for all other medical courses 🙂

Comment by harsha — January 20, 2015

I´m glad there´s still people like Dr.Root how has the talent, pacient and enthusiasm to teach using good humor (best way of learning).
I´m first year resident and your job helped me a lot in improving my bases knolodgement.


Comment by Rafael Villaverde — January 22, 2015

You are really blessed with such an excellent skill of teaching and we are very lucky to view your classes and learn ophthalmology which are very most illustrative, explanatory and conceptual.

Hats off for the care you take in preparing your slides, the patience you have in uploading all this stuff and your kind gesture in making all these classes available for free to all students across the globe

Comment by Bhanumurthy Kaushik Marripati — January 26, 2015

Dr. Timothy Root,
How are you. Your video is very lively and interesting, let me easily understand the slit lamp examination 。
we admire you all the way from China

Comment by jiangjun — February 6, 2015

Amazing videos! Such a fun way to learn!! It literally brightens up my dull and duller revision day. Thank you very much!

Cheeky request…any chance a podcast/lecture on nystagmus? 🙂

Comment by Lyn — February 24, 2015

You’re amazing! All of my classmates and I love this website and think the world of you. Thank you for being so interactive and a great professor, as some people aren’t as blessed with teaching skills as you are:p
I’ve learned more from your website than I have from actual teachers that I’ve paid tuition for…ridiculous.

Lots of love from Canada!!

Comment by Chanel — April 6, 2015

Dr. Root,

thank you for writing your book, it was both informative and entertaining. The easy-to-read nature of the opthobook allowed me to finish it quickly and just in time for my upcoming optho-rotation exams. You are a great inspiration!

From Aussie med student final year.

Comment by Kason Leung — May 5, 2015

I’m a Chinese medical student, I fell in love with Dr.Root’s sense of humor first time I watch his videos. Dr. Root has made those uninteresting, Merriam-Websters’s-dictionary-like text books into a more palatable way. It’s very conducive. Thank you Dr.Root I love you!!

Comment by Evan Liu — May 7, 2015

Till this remains free..God bless!

Comment by Zee — May 11, 2015

Hi dear Dr. Root,

Thank you for your fantastic book and lectures;

Also I was curious to see what my avatar would look like!

Comment by Behrouz Navabakhsh — May 13, 2015

Dr. Root, a sincere and genuine thank you for this altruistic act. I’m an aspiring ER doc with great interest in ophtho and I can’t thank you enough for all these resources you have provided. You are an exemplary doctor and person – hats off to you.
– Jesse

Comment by Jesse W. — May 14, 2015

Dr Tim ,
I really can’t express my admiration . your clear ,simple,funny book made my life easier .

thank you very much for your efforts .

N.B. your videos are amazing too .

Comment by Mohammed Azzam — May 19, 2015

hello dr.root,
i really apreciat your effort.God bless you
i would be thankful if you could make lecture about how to use 90D und 20D lenses as those very challenging and i think alot of us would benefit from it
my regards

Comment by adel — May 20, 2015

I love this website and refer fellow students to it all the time. I am a participant in an Ophthalmic Assistant program and find the book and videos a great resource!

Just a request…. a keratometer video would be great!

Comment by Deborah W. — June 8, 2015

No doubt,Dr.Root is extremely talented….I enjoy alot watching his lectures n they are reayy informative and attractive.I am 4th yr student doing optometry in India.And Your book and videos are helpful.
Thank u sir!

Comment by karuna — June 24, 2015

wonderful book, makes stuff easy to remember and 20/20 crystal clear concepts . thank you !

Comment by Ankita — July 27, 2015

Tim, what an outstanding piece of work. You make and eye an interesting organ to explore and understand. This I call Ophthalmology Bible.

Thank you so much for your contribution to the profession.

Comment by Enrique Nzula — August 12, 2015

very helpful informations……

Comment by Raju — September 13, 2015

Thank you so much for all that you do and your hard work towards educating others in the world of EYES! The way you teach and explain things should be the standard of teaching for all. Your website and videos have helped me more than you’ll ever know. Now I’m well on my way to getting my C.O.A.
Thank you!

Comment by Holly M. — September 21, 2015

I dont believe!!! pdf,videos, everything is free! THANK YOU Dr Root

Comment by Solmaz J — October 25, 2015

Well, I was instructing group of students and recommended your book to them , they all made their copy and they really like it and it was really successful course
I bet you hear that all the time , but here is the surprise
We are in Somalia
So it means your book reached every where in the world
Well done doctor
And thank you very much

Comment by Kassim — November 2, 2015


Comment by MOLOKOMME — November 9, 2015

thank you very much

Comment by ahmad — November 20, 2015

excellent…i want more please

Comment by Kahrmana — December 26, 2015

Hi Dr.Rooth,

Could you please explain FLV (focal loss volume) and GLV (global loss volume) in ganglion cell analysis?

Your explanations and videos are just awesome… and thank you so much for making it free. 🙂

Comment by EBIN RAJ S S — February 24, 2016

I’m a programmer and developer currently working for a Ophthalmology EMR company. We have been instructed to use your site and materials to gain a basic understanding of the trade to make our software better. Thank you for making it so easy to learn the ins and outs of day to day activities.

Comment by Adam Heeg — March 31, 2016

Dear Dr.Root,

Is there a scale or index used to grade symptoms of AMD like distorted vision on a scale of 0 to 3?

Comment by aiswarya v nair — April 17, 2016

Your book is very important ,informative .It helps great all medical students.


Comment by Md Ismail Hoque — May 8, 2016

To Dr. Root,

Words cannot begin to capture the immense gratitude I feel for your dedication and continued contributions towards medical education. I am currently a 4th year medical student applying for a residency position in ophthalmology and I owe so much to you and the fruits of your tireless labor. Your focused, easily digestible and often silly approach to learning is a welcomed breath of fresh air to the mundane rigors of traditional medical training. You were a HUGE part in me choosing ophthalmology and I hope to carry on my learnings to my patients and other aspiring students and health professionals in the future.

I just purchased the first volume of ophthobook questions, the most recent edition to your vast collection and again I was blown away. Education and teaching is something I hold close to my heart. Having served as a tutor/mentor at several levels, from high school students to fellow medical students, I realize the importance of medical education and feel a sincere drive to contribute and teach. I read your call for help to contribute to the expanding collection of books/resources at the end of the publication and I would like to say that I would be honored to help out in whatever capacity.

Thanks again for all your continued noble work, it is sincerely and forever appreciated.


Comment by Dan — July 23, 2016

I salute ur write ups & video displays.
Thumb -ups Dr Tim, 4rm UNIBEN , Nigeria

Comment by sheriff — December 26, 2016

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