I don't know about collections of old board questions as this type of collection is really discouraged (if not ilegal). I bought review book after review book and took two board review courses--Osler and San Antonio, then later took a review course after I passed my boards as CME/review at Will's Eye. I'd say the Will's Eye was the most comprehensive, but none of them take the place of good old fashioned study. I found Chern's Ophthalmology Review manual to be the most concise review and used his Review of Ophthalmology, Pro-vision series and Ophthalmic Optics by Guyton (from the Will's Eye course) to review. Concentrate on nitpicky details like inheretance patterns, most common pathogens, treatments and PATH pictures. Like most people coming out of residency, my sight-recognition of pathology slides was abysmal and I'd recommend borrowing or buying a path book and studying these pictures carefully. They had quite a lot of them on my exam. Good luck!