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.”

20/20 Vision. 20/10 Vision. 20/40 Vision. What do all these

20/40 Vision: What Does It Mean & Is It Bad?

What does '20/20 vision' actually mean?

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