This test is designed for amblyopia screening and testing children. The background is grey except for a white rectangle spaced at 50% surrounding each line of symbols. Line sizes range from 20/80 to 20/16 (6/24 to 6/4.8) equivalent, 0.25 to 1.25. Includes response key. Pages are offset for easy flipping. Instructions are printed on the inside cover. 10 pages. Measurements: 3.25 in x 9 in (8.25 cm x 22.9 cm). Test distance: 10 feet/3 meters