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Question: What does OU, OS, and OD stand for?

Answer:

OD ………………… oculus dexter (the right eye)
OS ………………… oculus sinister (the left eye)
OU ………………… oculus uterque (both eyes



36 Comments



How do you pronounce “uterque”



Comment by GG — February 18, 2009



uterque — oo’TEHR’ kooeh



Comment by SR — July 23, 2009



thanks ,,,,,



Comment by lolla — August 13, 2010



I still can’t pronounce it :(
oo tehr kooeh
how do i say kooeh
like koo eh?
It’s such a hard name



Comment by Vivian — September 30, 2010



i was taught that OU stands for Ocular Universal



Comment by Hamza — November 12, 2010



“uterque” is pronounced:

oo-tair-kway



Comment by jay — July 5, 2011



Uterque sounds a little like ‘you turkey’



Comment by Pam — September 27, 2011



thanks a lot for useful information.



Comment by Neda Salehi — October 23, 2011



thanks, this will help me very much



Comment by chamalka — November 9, 2011



thanks a lot & how to pronounced:?’ouoo turkey’



Comment by chandanie — November 9, 2011



this is very informative and interactive, no doubt everyone reading this is having fun while learning. I enjoy both the lectures and comments aswell. cheers.



Comment by ria cevangelista — January 13, 2012



When doing an exam, if I checked the right eye by covering the lefy and the left eye by covering the right, and they are both 20/20. Is it correct to put, OU 20/20 and OS 20/20? OR…can i document, OS 20/20? In other words, if they both tested 20/20, do I have to document them separately. Or can I simply put OU 20/20?
Thank you



Comment by Christina — March 1, 2012



Please ignore my previous question. I got my letters mixed up. The question below makes better sense. Thanks

When doing an exam, if I checked the right eye by covering the left and the left eye by covering the right, and they are both 20/20. Is it correct to put, OD 20/20 and OS 20/20? OR…can i document, OU 20/20? In other words, if they both tested 20/20, do I have to document them separately. Or can I simply put OU 20/20?
Thank you



Comment by Christina — March 1, 2012



You have to document it as OD 20/20 and OS 20/20. OU 20/? means the vision you are getting without covering either eye.



Comment by Robert — April 17, 2012



The explanation is very helpful. Just wondering, “oculus dexter”, “oculus sinister” and “oculus uterque”, are they Latin or other language origins? Thanks.



Comment by Tracy Dou — May 3, 2012



They are Latin!



Comment by Mrugesh Shah — May 14, 2012



OU OS and OD are for accurately documenting each or both eye, since the pronunciations are in Latin, we must understand that Latin is considered a dead language, so I feel pronunciation is not as important as understanding the symbolism.



Comment by Max — May 28, 2012



I just started working in Patient Services in an eye care practice and have wondered all week what OS, OD and OU actually mean–thank you for answering my burning question so clearly!



Comment by Regina — June 10, 2012



If a patient’s RX reads -.25 pl OS -.25 pl OD with a 2.50 ADD and is having double vision when reading what is the medical term for the problem there are 2 ?



Comment by Ernie — July 29, 2012



I made a mistake on my question:(it’s supposed to say when they have double vision watching TV ?there are 2 names for this problem,what are the names.



Comment by Ernie — July 29, 2012



How do I document that eye drops were administered one drop in each eye.
igtt ou??



Comment by Liz — December 11, 2012



Yes Liz… That is correct



Comment by Tina — December 24, 2012



Great job buddy :)



Comment by Binoy — May 29, 2013



I am buying contacts and the site I am buying them from is asking Right Eye (OD) and Left Eye (OS) then theres a dropdown list under each and I am rather confused what that is about? Would someone please explain to me what the drop down lists are about that have -1 to – 10? I really dont understand what its about, and I cant purchase the contacts until those fields are filled out.



Comment by Cady — June 29, 2013



OD = Oculus Dextra
OS = Oculus Sinistra
OU = Oculus Uterque.

I am also looking for the pronunciation of OU. It’s not even on howjsay.com and I have been able to find all other medical pronunciations there.



Comment by chiffonade — July 4, 2013



i have : OD: sphere -3.50
cylinder -0.50
axis 020
OS: sphere -2.00
cylinder -0.50
axis 175
So how many degree i have at the right eyes and the left eyes?



Comment by Vanessa Tran — October 16, 2013



i have
OD. +25 sphere. -50 cylinder. 020. Axis. And. OS. + 50 sphere. -50. Cylinder. 125. Axis. And. + 200. + 200. Prism. Please make me understand. How bad my eyes are ? I would appreciate if you could explain in simple terms. Than you



Comment by Lajya. Karrol — December 3, 2013



Vanessa and Lajya … if you want to understand the components of your glasses prescription, you may want to watch this video lecture I created on optics:

http://www.ophthobook.com/videos/eye-optics-lecture



Comment by Timothy Root, M.D. — December 6, 2013



How sinister of the profession to carry on the notion that we lefties are somehow inferior or less able than those of us who are Dexterous. Left and Right would be clearer, simpler. Not sure I like having an eye that is thought of by the trade as sinister!



Comment by Larry G — March 3, 2014



this is the first time to know these abbreviation many thanks for your help



Comment by ali — March 30, 2014



thanks dear firend



Comment by mohammad-iran — April 18, 2014



Thanks a lot it is very useful for me



Comment by Jaya Kumari — September 25, 2014



what is O.E



Comment by subaby — October 19, 2014



i had a medical examination and i heard the doctor said .5 OU.. what does that mean?



Comment by macky — November 15, 2014



It is read as OO-TER-KWE , Oi-KU-LUS (yes, Oi) OO-Ter-Kwe.



Comment by Neil — December 1, 2014



Macky: The doctor was describing the “cup-to-disk ratio” to describe your optic nerve. A large ratio, such as 0.6 or higher, is a potential sign of glaucoma. You can read more about cupping here.



Comment by Timothy Root, M.D. — December 14, 2014




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