OK as you know I'm no doctor or whiz at ray tracing but I wonder if some of you who are could feed my curiosity regarding patients who have trouble with near vision after YAG treatment.

I know how complicated rays of light can get in passing through multiple curved surfaces on the way to the fovia. Does that explain why some post IOL secondary cataract patients find their near vision seems to deteriorate from what it was right after YAG treatment?

Are the size and location of the tear(s) critical? How are they determined?

Would a specific OC placement in a sv near lens help?

This questions nagged at me for a while now so do you guys have any helpful thoughts or experiences?