20/40 Vision: What Does It Mean & Is It Bad?
20/40 is a measurement of visual acuity (how sharply you see). Read on to learn about the meaning behind the numbers and whether 20/40 vision is “bad.”
Understanding Visual Acuity
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20-40 Vision: What Does It Mean?
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Can You Have Better Than 20/20 Vision?
What Is 20/20 Vision?
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