Merck Manuals
Medical topics, symptoms, drugs, procedures, news and more. There is a section on eye disorders.
Medscape
Reference information by clinical specialty. There is a section on clinical procedures for the eye: Click "Clinical Procedures" and scroll down to "eye."
NCBI Bookshelf
A searchable, online book collection in the life sciences and healthcare.
FreeBooks4Doctors!
Free medical textbooks and books.
Google Books
Find books you can preview or read for free online.
WorldCat
Worldwide library catalog. Find books to borrow from a library near you.