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An eye examination, commonly known as an eye test, [1] is a series of tests performed to assess vision and ability to focus on and discern objects. [2] It also includes other tests and examinations of the eyes. [2] Eye examinations are primarily performed by an optometrist, ophthalmologist, or an orthoptist.
A person taking the test covers one eye from 6 metres or 20 feet away, and reads aloud the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the visual acuity in that specific eye. The symbols on an acuity chart are formally known as "optotypes". Variation of Snellen chart with another letter ...
A reference value above which visual acuity is considered normal is called 6/6 vision, the USC equivalent of which is 20/20 vision: At 6 metres or 20 feet, a human eye with that performance is able to separate contours that are approximately 1.75 mm apart. [9] Vision of 6/12 corresponds to lower performance, while vision of 6/3 to better ...
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Grand Vision acquired Vision Express in 1997. The French parent company Grand Vision has clinics under various brands across Europe, and the rest of the world. Under franchise agreement there is a strong Vision Express brand present also in Latvian and Lithuanian markets. These clinics were acquired from GrandVision by Latvian entrepreneurs of ...
As of August 2023, Vision to Learn was active in 15 states and the District of Columbia, and had administered 2.3 million optometry screenings, and distributed 390,000 pairs of eyeglasses to children. [7] Its board of directors include Micky Kantor, Jake Winebaum, [8] and Laphonza Butler. [9] Celebrating its 200,000th student served in 2019
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