白内障占致盲原因之首 ,估计目前全世界有 2千万患者因白内障而失明。我国的盲人中约有半数是白内障引起 ,估计积存的急需手术治疗的白内障盲人约2 0 0多万人。我国每年新增白内障盲人约为 40万人 ,随着人口增加和老龄化 ,目前白内障无特殊的预防方法 ,白内障致盲的人数还会增 Cataracts have led the cause of blindness, and it is estimated that 20 million patients worldwide are currently blind due to cataracts. About half of the blind people in our country are cataracts and it is estimated that there are more than 20 million blind people in need of surgical treatment of cataracts. In our country, there are about 400,000 newly-added blind people with cataracts each year. With the increase of population and aging, there is no special prevention method for cataract and the number of blind people who suffer from cataracts will increase