美国明尼苏达大学医学院眼科副教授william Rathbun在华盛顿召开的防盲研究讨论会上说:“可能人晶状体主要的、唯一的疾病是晶状体浑浊——白内障。美国近60%的65～74岁的人有发生白内障的某些体征。在非洲,白内障是致盲的主要原因。”白内障或许是不可避免的。当阳光和多种 William Rathbun, an associate professor of ophthalmology at the University of Minnesota Medical School, said in a panel discussion on prevention of blindness in Washington: “It is possible that the major and only condition of the lens in the human lens is cloudiness of the lens - cataract. Nearly 60% of people aged 65-74 in the United States have Some signs of cataracts have occurred, and cataract is the leading cause of blindness in Africa. ”Cataracts may be unavoidable. When the sun and a variety