LEA NUMBERS® Intermediate Vision Card274100
This standardized adult vision assessment is designed to measure visual acuity with a standard line test and with three tighter spaced tests; 50%, 25% and 12.5% which often reveal difficulties in seeing tightly crowded details. Line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent, 0.05 to 2.00. Card measures 8" x 10" (20.3 cm x 25.4 cm).
Both sides of the chart have a testing distance of 16 inches/40 centimeters and 24 inches/60 centimeters.LEA Numbers Near Card Guide