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Visual acuity - Wikipedia

en.wikipedia.org/wiki/Visual_acuity

Visual acuity (VA) commonly refers to the clarity of vision. Visual acuity is dependent on optical ... Visual acuity is a measure of the spatial resolution of the visual processing system. VA, as it...

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

www.allaboutvision.com/eye-test/

During an eye test, eye doctors use eye charts to measure how well you see in the distance, compared with other human beings. If you haven't established an ...

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

www.allaboutvision.com/eye-exam/2020-vision.htm

To answer these questions, let's take a closer look at vision-related terminology to fully understand how eye doctors measure the quality of your vision.

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

www.eyecaretyler.com/resources/how-the-eye-works/what-does-2020-mean/

Visual acuity is usually measured with a Snellen chart. Snellen charts display letters of progressively smaller size. "Normal" vision is 20/20. This means that the  ...

Low Vision and Legal Blindness Terms and Descriptions ...

www.visionaware.org/info/your-eye-condition/eye-health/low-vision/low-vision-terms-and-descriptions/1235

Visual acuity is a number that indicates the sharpness or clarity of vision. A visual acuity measurement of 20/70 means that a person with 20/70 vision who is 20 ...

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

www.todayifoundout.com/index.php/2013/12/2020-vision-scale-works/

Dec 31, 2013 ... So what exactly are eye doctors measuring, and how can the scale be ... So, if you take someone with 20/20 vision and put them 200 feet away ...

eye - What are the different eyesight measures and how are they ...

health.stackexchange.com/questions/957/what-are-the-different-eyesight-measures-and-how-are-they-related-to-each-other

May 13, 2015 ... While searching about laser surgery for my myopia, I came across different system to measure the quality of individuals' eye sight.

Eyesight Measurement Resources - endmyopia.org

endmyopia.org/measure/

Nov 9, 2016 ... Introduction: Measuring Eyesight. Many people don't realize the simplicity of all the measurements done specifically to correct myopia at the ...

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.

How to Test your Eyes at Home using the Computer

www.labnol.org/internet/test-eyes-online/19682/

Learn how you can quickly test your eyesight at home using the computer itself with the ... Also measure the distance of your eyes from the computer screen.