I will add my experience though it isn't exactly on topic. I don't have cataracts. However a few years ago I had a head injury and soon thereafter I had vitreous separation in my right eye. I am "wrong dominant" in that my left eye is dominant though I am right handed. So my problem was in my non dominant eye. My vitreous separation, which is normal age related, was incomplete because it wasn't normal. Being incomplete, it warped my retina and made it impossible to see sharply as well as it caused straight lines to appear weirdly curved. The surgeon I saw said it is unlikely surgery would fix my problem. After a few years my good eye, left eye, started to lose definition. It got so bad that I couldn't confidently focus my camera. A few months ago I came across information about photobiomodulation. which is to say infrared light exposure. I got the proper lights and started doing the recommended staring at them in the early morning. Right away my vision in my dominant left eye improved dramatically. Now I can see sharply as normal in the real world but also now I can see exactly the focus in my camera.. as well as my grain focuser in the darkroom. If you have never heard of Photo Bio Modulation I would suggest you spend some time on you tube or google and learn about it. Lots of people sharing their experience.