LEA NUMBERS® Book with Crowding Bars274400
A handheld vision test with LEA NUMBERS® optotypes featuring 50% spaced contour interaction bars to provide single optotype acuity with the proper crowding effect. Optotype line sizes range from 20/100 to 20/20 (6/30 to 6/6) equivalent. This book can also be used to test adults or geriatric patients. Contains 17 pages.
Dimensions: 4" x 4" (10.2 cm x 10.2 cm).
Testing distance: 10 feet/3 meters.