There are tons and tons of great ophthalmology books out there. Are you looking for a straight up picture atlas? Or something to read to prep for residency?
If it's the former, Spalton's is a great atlas that you'll be find useful now, throughout your residency, and afterward. It's very nice b/c right next to the picture, it has little drawings of the exact same picture, that are very nicely labelled.
Kanski is more of a text than an atlas, but is has many great pictures, plus information in a very easy to learn format.