20/20 rule to slow down the progression of nearsightedness and astigmatism
If you are bothered by nearsightedness or astigmatism, or need to work before computers or do some other near activities for long time, 20/20 rule will help you to slow down the progression or avoid getting nearsightedness and astigmatism. The following will give some introduction on 20/20 rule in order to lead more people to benefit from this rule.
Nowadays, a lot of people need to work before computers
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