I am very sorry that I cannot personally vouch for any of the Indian medical
schools. I know that the Indian physicians here
in Kansas City are excellent
and most did at least their medical school and internship there.
You might do a literature search on CSR and look for Indian authors. I'm sure there is a list somewhere of the top 10 ophthalmology programs in India.
Last resort you might ask you local Eye MD what is the best second opinion he might value on his case.