This is, actually, meant as a reply to westchesterbaba

Forgive me if I didn’t make my explanation clear. With my left eye surgery in 2019, they implanted the typical Alcon SN60 that they use for, something like, 98% of their patients. Immediately after surgery, I had PD that is still significant to this day with temporal light streaks from external sources like sunlight, headlights and ceiling lights. From what I’ve read, the Alcon SN60 IOL that they implanted has a more squared edge that “could be” a source of light reflections off the of retina and be the cause the long term PD symptoms I’ve mentioned.

From what I read in the following 3 years since the left eye surgery, IOLs with more rounded edges can, possibly, help to avoid the light reflections and, thereby, avoid the PD. I used this info as my right eye cataract worsened and needed surgery which I had on 1/26/23. There were no guarantees that a round-edge IOL would be the answer, ESPECIALLY since I have pigment dispersion syndrome in this right eye. I asked for a rounded-edge IOL so that I would give myself the best chance of avoiding PD on this second eye. The surgeon made no promises, but I’m glad he gave me the best chance for success.

As said, post surgery 4.5 months, there IS Positive Dysphotopsia on this right eye. Still, I’m hopeful the PD will dissipate. It just makes sense to me that a lens with less surface edge for potential reflections (like a round-edge IOL) makes more sense than one with a square edge. Despite, the right eye PD, I think I pushed for the lens most likely to yield me the best vision.

This is so tricky for every person, but I hope I’ve adequately explained my rationale.

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