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In addition to this, the LEA symbols test has been experimentally verified to be both a valid and reliable measure of visual acuity. As is desirable of a good vision test, each of the four optotypes used in the symbols test has been proven to measure visual acuity similarly and blur equally as well, supporting the test's internal consistency. [3]
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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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A person's visual acuity is registered documenting the following: whether the test was for distant or near vision, the eye(s) evaluated and whether corrective lenses (i.e. glasses or contact lenses) were used: Distance from the chart D (distant) for the evaluation done at 20 feet (6 m). N (near) for the evaluation done at 15.7 inches (400 mm).
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