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Question: What holds the lens in place?

Answer: The lens is held in place by zonules. These zonules are arranged around the periphery of the lens like the springs on a trampoline.


I just had cataract replaced. Never thought to look up information before, since Dr Yassin is well qualified. This book is fantastic. Explains through analogies… Who doesn’t know M&M. Thank you. Very well written. Easily understood. Good clear diagrams as well.

Comment by Peggy — June 18, 2013

I just had an IOL put in today. I heard my surgeon explain to an observer that he was ‘polishing’ and that it was wonderful how much material he could remove. It looked like a microscopic squeegee going up and down in the bright light I was staring into. He must have been working on the lens case before slipping in the IOL. Your explanation helps it to all make sense!
And my vision is already 20/20 in that eye. A modern miracle!

Comment by Melissa Searcy — October 25, 2013

I just had a cataract removed and an IOL put in. What keeps it in place?

Comment by Charlotte Spencer — March 4, 2015

Thank you for such an in-depth education of Cataract surgery. Just had my Left eye done and I’m amazed already. Can’t wait for the other eye to be fixed! Thanks for answering every single question I had!

Comment by Jane — September 16, 2016

Charlotte, I think they put a tiny stitch in the eye on the side they slip the lens into.

I’m pretty happy with my outcome, but really, it was just switching out ‘near’ vision to get ‘far’ vision. Now my near vision is awful and I have to wear reading glasses all the time. They will NOT preserve any near vision that we may have. And charge $2,500 per eye to correct the near vision as Medicare won’t pay for that.

Comment by Jane — January 20, 2017

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