In this session: Georgina Newbold, DVM, DACVO, provides a brief review of the normal corneal anatomy and a broad overview of abnormalities that can occur within the cornea. The focus will be on common canine diseases that can lead to corneal opacities. The section on nonulcerative keratitis describes and provides treatment plans for chronic superficial keratitis (pannus), immune-mediated keratitis, pigmentary keratopathies, corneal degeneration, and corneal dystrophy. The final section will be a brief overview of medical management for complicated corneal ulcers.