@Meerkat For many years I have followed Dr John Christopher and the Herbal Legacy website and was a student at the School of Natural Healing.
This isn't advice, but maybe you would be interested in finding out more about using herbs for your eye problems. Many different ailments that I or my family has had have been healed, cured or made better by following recommendations with herbal formulas from Dr. Christopher's teachings. In other words, everything I have used or tried no matter where I got the herbs from, worked.
https://herballegacy.com/Eye_Ailments.html
"Herbal Eyebright: Dr. Christopher's Herbal Eye-Health Formula: This formula is excellent for helping to brighten and heal the eyes, and it is known to remove the cataracts and heavy film from the eyes: Make tea and put into a glass eye cup. There will be a slight burning sensation when using the cayenne in the eye at first, but there is nothing to be concerned about. Tip head back and apply the eye cup to eye. Exercise eye while doing this as though you were swimming under water. Do this three to six times a day. Drink 1/2 cup a.m. and p.m. This formula has aided many sty cases. [HHH p.114]"
My husband used this formula at one time for something that was bothering his eye, not cataracts.
https://herballegacy.com/Herbal_Eyebright.html
You can purchase any of the herbs from any herbal store, online store, etc. I wish you luck. Take it easy on the cayenne, maybe don't use it at all for the first few days. I know some herbal people are against cayenne but carry on. You can make your own formula or purchase it.