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Shortsightedness is Environmental and Genetic - Health

Myopic vision is genetic as well as Environmental - Health.
Myopia is a very odd condition. Shortsighted people can only focus at a close distance because their eyeballs have grown too large. It is not so much an illness as a consequence of growing.
It is a genetic problem. About 90 per cent of East Asians suffer from myopia. This compares to 25 per cent of Australians. Too much reading indoors is a causative factor. The more years one partakes in education the higher the probability that shortsightedness will occur. Spending time outdoors where it is necessary to focus on things at a distance seems to be preempt the ailment.

Getting glasses does treat the condition. However, it can lead to problems in the future. There is a higher possibility of going blind. Detached retinas and glaucoma lead up to this.

The age of technology has not been a factor in myopia. Yes, there is a lot of reading on tablets which is detrimental. Whether reading a book or looking at a screen, there is no difference.
Genetics by Ty Buchanan 
 
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