This document provides information on common disorders and conditions of the eye. It begins with an overview of eye anatomy including the three layers of the eyeball. It then discusses various refractive errors like hyperopia, myopia and astigmatism. Next it covers muscular disorders such as nystagmus and strabismus. Disorders of the eyelid including hordeolum, chalazion and blepharitis are described. Finally it examines disorders of the globe of the eye including keratitis, cataracts, glaucoma, macular degeneration and more. Treatment options are provided for each condition.