Ocular diseases are diseases of the eye, abnormalities in the organization and function of the eyeball, atrophy and damage, including diseases of its subsidiary tissues such as the orbit, the eyelids and the oculomotor muscles. Common eye disease are conjunctivitis, keratitis, periodic ophthalmia, cataracts embolism, seriously affecting life. Prevention of eye diseases not only to do early detection, early detection and early treatment, but also pay attention to the usual use of eye protection, as much as to protect the eyes, to avoid eye fatigue. Reasonable diet, for the patients use computer long time, to eat some fresh vegetables and fruits, while increasing vitamin A, B1, C, E intake, to prevent corneal dryness, dry eyes, vision loss, and even night blindness. Soy products, fish, milk, walnuts, tomatoes, etc. can be eaten regularly, good for the eyes.