A doubled-sided 8 Position Landolt C distance chart with openings at the up, down, left, right, and diagonal angles. This vision chart features proportionally spaced (logMAR) and crowded lines on their respected side with line sizes ranging from 20/200 to 20/10 (6/60 to 6/3) equivalent, 0.10 to 2.00.
Dimensions: 18" x 18" (45.7 cm x 45.7 cm).
Testing distance: 10 feet/3 meters.