Cataract is the most likely to get an eye disease of the elderly, its harm is great, serious can lead to blindness, cataract to many patients life brings trouble, everyone does not want to see the occurrence of cataract, then what are the ways to prevent cataract? 1, cataract pre to avoid strong sunlight. In outdoor activities, bring sunglasses or sun hat, can effectively prevent the damage of rays on the crystal. 2.Strengthen eye hygiene, usually do not rub your eyes, do not use unclean handkerchiefs, towels to wipe your eyes, wash your eyes. After excessive use of the eyes should be appropriate relaxation, sedentary workers for cataract prevention should be 1 ~ 2 hours to get up and move 10 ~ 15 minutes, lifting the eyes far away, or do eye exercises. To have enough sleep, timely recovery of fatigue. 3, pay attention to mental regulation: take things calmly, broad-minded, not easy to anger; cultivate on flowers, birds, fishing and other useful interests to cultivate sentiment, cataract prevention to talk with young people, keep a cheerful mood, can play a role in preventing and delaying the progress of the disease. 4, nutritionally balanced diet: cataract prevention should eat rich in protein, calcium, trace elements, eat more food containing vitamins A, B, C, D food. Drink more water, eat less salt, usually eat more fish. 5, in addition to special treatment needs, cataract prevention to avoid taking certain cataract-inducing drugs (such as glucocorticoids, pupil shrinkers, chlorpromazine, etc.). 6, long-term smokers susceptible to cataract has been studied and confirmed by practice, cataract prevention should quit smoking early.