Hello,
The best hospitals for dnb ophthalmology are:
1. LV Prasad eye institute, Hyderabad and Bhubaneswar
2. Shankar Netralaya, Chennai
3.Narayana Netralaya, Bangalore
4. Aravind eye hospital, Madurai
5.AIIMS, Delhi
6. Disha eye hospital, Kolkata
7. T.N Nair college, Mumbai
These are some of the best options.
Hope this helps.
All the best