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Visual acuity - Wikipedia


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 ...

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 person with normal vision sees at 20 feet. 20/40 vision ...

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) ...

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


20/20 is average vision the chart was developed by Snellen. Its the size of a letter that was ... 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 ...

What is 20/20 Vision? How to Convert Diopters to a 20/20 Measure


And is it possible to achieve 20/20 eyesight or better using natural methods like ... If the measurement has a minus (-) before it, you are nearsighted and have ...

What Is 20/20 Vision? | University of Iowa Hospitals and Clinics


The term, 20/20, is an expression of your ability to see at a distance. ... at an object 20 feet away, your eye is relaxed in its normal shape, Dr. Johnson says.

What Is 20/20 Vision? How Convert Diopters To 20/20 Scales


You often heard of people wanting to get back their 20/20 vision. But what does 20/20 means? Find out more here and how to convert diopters to the 20/20 scales.

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 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 ...

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20/20 Vision: Is It Perfect Eyesight? - AllAboutVision.com


If you have an eye exam and are told you have 20/20 vision, does this mean you ... Visual acuity is a static measurement, meaning you are sitting still during the ...

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 ...