Explain the 20-20 rule. by means of inference, how does the name of this rule relate to the eye?

20 20 vision, is how it relates to the eye.

Explanation:

(If you work with a computer for more than seven hours each day, take a 20-second break right now, look at an object that is 20 feet away, and start reading. The 20-20-20 rule is defined as a 20-second break to look at something 20-feet away every 20-minutes.) This will help prevent eye strain, blurriness and dry eyes etc.

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