HOTV Letter Book with 50% Spaced Bars600350
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A handheld vision testing book featuring HOTV optotypes with 50% crowding contour interaction bars to provide single optotype acuity with the proper crowding effect. Optotype line sizes are from 20/100 to 20/16 (6/30 to 6/4.8) equivalent. Includes a response panel, instructions, and 17 pages.
Dimensions: 4" x 4" (10.2 x 10.2 cm).
Testing distance: 10 feet/3 meters.
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