Single HOTV Letter Book With 50% Spaced Crowding Bars (10 feet/3 meters)
Single HOTV Letter Book With 50% Spaced Crowding Bars (10 feet/3 meters)
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Description
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This book features 50% contour interaction bars to provide single optotype acuity with the
proper crowding effect. Optotype line sizes range from 20/100 to 20/16 (6/30 to 6/4.8)
equivalent, 0.20 to 1.25. Includes response key, and instructions. 17 offset pages for easy
flipping. 4" x 4" (10.2 cm x 10.2 cm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600350
