1.看事物色觉发生变化
当看事物时色觉出现变化，很可能是晶状体中水分过多，出现了肿胀，使细胞间隙增大，而发生折射出现的色彩晕光现象。
2.夜盲
夜间进入暗处时，什么也看不清楚，这就很可能是晶状体出现浑浊，夜间暗光进入视网膜受到了阻碍的影响。
3.单眼出现多视
在看事物时，一只眼睛看事物常常出现双影或者多影，要小心白内障前兆。这很可能是白内障初期，晶状体出现了部分浑浊，光线投射到视网膜所产生的双影或多影现象。
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