Notations for testing at 3 meters (10 ft.)
Acuity range 24M to 1.5M (20/160, 6/48 to 20/16, 6/4.8 equiv.)
Two smaller groups 6M to 1.5M for repetitive testing (20/40, 6/12 to 20/16, 6/4.8 equiv.)
Measures 23 X 35.5 cm (9 X 14 in.)
Can be wall-mounted
Made of shatter proof polystyrene, this Landolt "C" eye chart is used world wide to test visual acuity. U.S. vision notations and international notations are printed on each side to help aid in the vision screening process.