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Visual acuity


Visual acuity (VA) commonly refers to the clarity of vision. Visual acuity is dependent on optical .... Emmetropic subjects with 6/6 vision or "better" (20/15, 20 /10, etc.) ... Measurement...

Eye Test - The Eye Chart and 20/20 Vision Explained


20/20 vision (or really, 20/20 visual acuity) is considered "normal" vision, meaning you can read at 20 feet a letter that most human beings should be able to read ...

Visual Acuity: What is 20/20 Vision?


20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. If you have 20/20 vision, you can ...

How the 20/20 Vision Scale Works - Today I Found Out


Dec 31, 2013 ... If you haven't, you have probably heard other people saying they have “20/20 vision” or even the phrase “hindsight is 20/20.” The vision scale ...

How the 20/20 Vision Scale Works - Gizmodo


Dec 31, 2013 ... If you haven't, you have probably heard other people saying they have "20/20 vision" or even the phrase "hindsight is 20/20." The vision scale ...

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


20/20 vision is referred to as the standard, or how a “normal” person sees. This means, that when you stand 20 feet away from an eye chart, you see what the ...

What does it mean when someone has 20/20 vision? | HowStuffWorks


If you have 20/20 vision, it means that when you stand 20 feet away from the chart you can see what the "normal" human being can see. (In metric, the standard ...

Free Eye Chart - Download, Print, Test | Vision Source


Searching for a free eye chart to test your vision at home? Here you'll ... A 3 to 4- year-old should be able to read the 20/40 line, and a 5-year-old the 20/30 line.

What does it mean to have 20/15 vision? - Quora


So 20/20 is just where someone decided to draw the line as "normal" or good enough. 20/15 means you can see at 20 feet what a person with 20/20 vision could ...

Vision measurement - Vision Training

www.vision-training.com/en/Vision test/Vision measurement.htm

The 20/20 label is a relative measurement of how well you see. If you can see a 9 mm letter at a distance of 6 meters (20 feet) then you have 20/20 vision.

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What Does 20/20 Mean? - EyeCare Associates of East Texas


"Normal" vision is 20/20. This means that the test subject sees the same line of letters at 20 feet that a normal person sees at 20 feet. 20/40 vision means that the  ...

Low Vision and Legal Blindness Terms and Descriptions ...


A visual acuity measurement of 20/70 means that a person with 20/70 vision who is 20 feet from an eye chart sees what a person with unimpaired (or 20/20) ...

How many people have 20/10 vision, is it achievable? - Laserfit


May 10, 2015 ... A person with 20/10 vision can view the same object twice as far away as a ... vision, and 20/10 would be considered better than normal vision.