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The Symbol : 250150

LEA SYMBOLS® – foldable 15 lines distance chart

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This test is designed for vision screening at schools and assessing vision in children with special needs beginning at age 3.

Features proportionally spaced (logMAR); line sizes range from 10/100 to 10/4 (3/30 to 3/1.2) equivalent. The other equivalents featured on this chart are letter size, 20 foot, 6 meter, decimal, and LogMAR. The reverse side is black and can be used as the test surface for a color vision test (#260260). Has a hole for hanging the chart on the wall. Includes a response key and instructions.

Dimensions: 17" x 21" (43 cm x 53.4 cm). Folds to 17" x 10.5" (43 cm x 26.7 cm).

Testing distance: 10 feet/3 meters.

Click here for the 250250 & 250150 Guide

Przykładowe przeprowadzenie badania : 

PDF DocumentInstrukcja użytkowania

PDF DocumentKarta odpowiedzi

PDF DocumentPrzelicznik skali Decimal/Snellen

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