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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 ...

Test your vision - Essilor


Can you see properly? To find out, there is nothing better than taking a test! The test for far sighted vision is probably the best known. Thanks to this test, you can ...

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 ...

Visual Acuity - How We Measure Your Vision - Retina Specialist ...


When you go to your eye doctor, we check your “vision,” but there are several ways to actually monitor or evaluate your vision. Basically, almost all vision testing ...

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.

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 ...

"Measuring Vision and Vision Loss"


Colenbrander – Measuring Vision and Vision Loss. ASPECTS OF VISION LOSS. Since the visual system alone provides as much input to the brain as all other ...

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”.

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


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

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 ...

Vision measurement - Vision Training


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.