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Visual acuity - Wikipedia


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


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 ...

Low Vision Resources Center — How Visual Acuity Is Measured


Oct 6, 2003 ... by Wendy Strouse Watt, O.D.. October 2003. This information is also available as part of an audiovisual presentation, “All About Eyeglasses”.

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


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

How to Measure Your Vision at Home: 9 Steps (with Pictures)


How to Measure Your Vision at Home. As you have probably noticed during your visits to the eye doctor one of the first tests he makes you take is reading the ...

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


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 ...

Vision tests - Vision Australia


Visual acuity is determined by measuring the smallest size print that a person can read. ... It uses capital letters of different sizes to test vision in literate adults.

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.

Vision measurement - Vision Training

www.vision-training.com/en/Vision test/Understand presecription.html

Most people that we talk to do not understand their vision prescription at all – it may as well be Greek!. Here is a guide to help you in understanding what your ...

How to Test your Eyes at Home using the Computer


Jul 19, 2012 ... Learn how you can quickly test your eyesight at home using the computer ... Also measure the distance of your eyes from the computer screen.

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


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 ...


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 do Optometrists Measure Vision? | VU |


Oct 28, 2015 ... Optometrists use various techniques to measure your eyesight. Read about the techniques used by the Vu team.