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eyesight
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What is 20/40 Eyesight? 7+ Things to Know
Visual acuity, expressed as a fraction, indicates the clarity or sharpness of vision. A measurement of 20/40 signifies that an individual can see an object at...
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Visual acuity, expressed as a fraction, indicates the clarity or sharpness of vision. A measurement of 20/40 signifies that an individual can see an object at...