This electronic book was created to facilitate veterinarians and students of veterinary medicine in their pursuit of knowledge regarding the diagnosis and medical and surgical therapy of ocular diseases in companion animals. The electronic format allows several features that bound books lack which is exciting for us as authors and teachers in the Universities and continuing education class rooms across the world. The challenges are numerous for the ophthalmology professor in establishing a curriculum and providing a reference that is current, illustrated with color photos, videos, and illustrations, and within a student’s budget. In addition the text needs to be easily updated and should allow for self directed learning. We have focused our thoughts on these challenges as we developed and wrote this electronic book.