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What is 20/20 Vision?

During a routine eye examination, an optometrist or ophthalmologist will evaluate visual acuity. The result is expressed as two numerical values, such as 20/20 or 20/40. Everyone has heard these numbers before, but what really is 20/20 vision? Visual acuity can be defined as the degree of visual clarity. It is affected by the retina’s […]

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