What kind of vitamins or food should i take to prevent, retina detachment nd cataracts or what the doctors recommend to prevent all of that?

There are no : Vitamins to prevent cataract or retinal detachment. But there are some to keep the eyes otherwise healthy; the antioxidants, the omegas and other minerals important for retinal health, all are found in every day vitamins today.

Vitamins: There are no vitamins or foods that are proven to prevent either of those conditions. Routine exams by an ophthalmologist are the tool for preventive eye care.