What should I do for my 6 months old son?

Hello guys,

I hope you are doing well so far. My son is 6 months old. He is blind (not by birth). He was early birth about 28th weeks. He was in the NICU for 13 days. We didn't go to any eye doctors within this time. Now our son don't see the light of the world. Doctor said he is blind. Both of his eyes are damaged.

What should we do now? Is there any chance to recover. Where should we go for better treatment?

Thank you!