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LEA SYMBOLS® Flipbook with Crowding Bars - 50%
A handheld vision test with LEA SYMBOLS®. This test features 50% spaced contour interaction bars to provide single optotype acuity with the proper crowding eff ect. Features optotype line sizes from 20/100 to 20/20 (6/30 to 6/6) equivalent. 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.
