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Eye Chart, Snellen Eye Chart Wall Chart, with Hand Pointer and Eye Occluder for Eye Medical Exams (3 Piece Set)
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Eye Chart, Snellen Eye Chart Wall Chart, with Hand Features
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A Snellen chart is an eye chart that can be used to measure and estimate visual acuity.
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Snellen Eye Chart size is 22 inches x 11 inches. and the top center hole is easy to hang on the wall. or Tape or tack to hang the test chart on the wall.
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Visual acuity is tested with a Snellen's chart at a distance of 20 Feet. A well-lighted room is at least 10 feet long and make sure the test chart is level with the eyes of the person.
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Eye exam chart this line, designated 6/6 (or 20/20), is the smallest line that a person with normal acuity can read at a distance of 6 meters.
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The eye chart for eye exams 20 feet is premium PVC material, extra thick and tear-resistant, clear print and non-reflective, washable, and easy to clean.
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The eye test chart includes Red and Green color bars for an easy and helpful color vision test.
About Eye Chart, Snellen Eye Chart Wall Chart, With Hand
Packing Include: an eye chart, hoodwink board, and baton. Acuity charts are used during many kinds of vision examinations, such as "refracting" the eye to determine the best eyeglass prescription. The largest letter on an eye chart often represents an acuity of 6/60 (20/200), the value that is considered "legally blind" in the US. Many individuals with high myopia cannot read the large E without glasses but can read the 6/6 (20/20) line or 6/4.5 (20/15) line with glasses. By contrast, legally blind individuals have a visual acuity of 6/60 (20/200) or less when using the best corrective lens. The American Academy of Pediatrics Standards for Visual Acuity: A child should be able to see the 20/40 line by age 3 or 4 and the 20/30 line by age 5. Older kids or adults should be reading the 20/20 line. You should arrange for a medical eye examination by an ophthalmologist if there are abnormal results. In addition to their visual acuity, how a child's two eyes compare to each other is also important.
