白内障摘除以后一般需要配戴高度凸透镜方能取得有用视力。配戴高度凸透镜后结点前移、物像变形、视野缩小(一般只有35°～55°),而且不等像率(16～30%),因此单眼白内障术后无法配戴普通眼镜提高视力。角膜接触镜虽无以上缺点,但不等像率仍有0～12%,故少数患者仍不能获得术后双眼单视,且装卸麻烦。有人调查单眼无晶体眼患者配戴角膜接触镜后,只有2～10% After the removal of cataract generally need to wear highly convex lens in order to obtain useful vision. Wear highly convex lens after the node forward, deformation, reduced field of vision (usually only 35 ° ~ 55 °), and not equal to the rate (16 ~ 30%), so monocular cataract surgery can not wear ordinary glasses to improve vision . Although the above shortcomings of contact lenses, but not the same as the rate is still 0 ~ 12%, so few patients still can not get binocular binocular surgery, and loading and unloading trouble. Someone investigating monocular aphakia patients wearing contact lenses, only 2 to 10%