You may want to look at the Academy's Basic and Clinical Science Course. They are used to prepare for the ophthalmology board exam and most people use it to study for the OKAPS (practice board exams residents take each year). Most residency programs provide these books for the residents. I think there are 13 or 14 volumes in all.
The Albert & Jakobiec's "Principle and Practice of Ophthalmology" is a multi-volume comprehensive text for ophthalmologists.
Lange publishes a "General Ophthalmology" text which is a good intro book for easy reading.