My mother, at 90, was told by her eye doctor that she needed cataract surgery. She called Life Extension, where she is a member (lef.org) and they suggested some eyedrops to use to improve her situation.
A few weeks later, at the appointment to schedule the surgery, the eye doctor again examined her eyes and was surprised to see some improvement, so surgery was put off for another year. She is hoping that in this next year there will be further improvement.
Do no exhaust all options. It is possible that improvements can be made with dietary, supplemental and/or non-surgical options.