Brings up good point...what books did you find totally useless for OKAPS or boards?
From BSCS: Medicine update, Optics, Fundementals, first 100 pages of Uveitis
Review books: Kanski picture atlas question book, mass eye and ear question book (not totally useless, just liked chern a lot more).
Don't mean to hijack thread, but if you're trying to buy portions of the basic science series instead of the whole thing this may be useful to the OP.