it is good that the gecko is eating well, my question would be how does he feed if he is not able to see the food items?
One of my albino geckos has not the best sight, but I simply thong feeding him, which works well for both of us. The fact of the reduced sight might be due to it being an albino.
I am not sure what morph your gecko is, but if he is an albino, his sensitive eyes might have got damaged at the shop if exposed to bright light.
But as long as he is feeding well I would not worry to much.
Hope everything goes well
3.7.0 Eublepharis macularius