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The young are not carrying on with writing, adding and substracting, etc. Computers have ended the need and interest in such subjects. ⁍...

Myopic vision is genetic as well as Environmental - Health. Myopia is a very odd condition. Shortsighted people can only focus at a close d...

It is not known how many levels of vision there are: There could be billions. Every human being and animal for that matter sees the world...