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在社会交往中,人们需要认清对方的脸,可是有些人的视网膜严重损伤,还有一些老年人因眼睛出现黄斑而无法看清事物,即使戴上眼镜也不解决
In social interaction, people need to recognize each other’s face, but some people have severe damage to the retina, and some older people can not see things because of macular eyes. They do not solve the problem even if they wear glasses