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LEA SYMBOLS® BOOK WITH CROWDING BARS
The Symbol :
259200
LEA SYMBOLS® BOOK WITH CROWDING BARS
Kolor/Wzór
349.00
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Zamówienie telefoniczne: 22 651 82 85
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A handheld vision test with LEA SYMBOLS®. This test features 50% spaced contour interaction bars to provide single optotype acuity with the proper crowding effect. Features optotype line sizes from 20/100 to 20/20 (6/30 to 6/6) equivalent. This book can also be used for vision testing of illiterate adults or geriatric patients. Includes a response key, instructions, and 17 pages.
Dimensions: 4" x 4" (10.2 cm x 10.2 cm).
Testing distance: 10 feet/3 meters.
Instrukcja użytkowania
Przelicznik skali Decimal/Snellen
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