Sloan Letter Reversed Distance Chart800739
A Reversed Sloan Letter optotypes chart with proportionally spaced (logMAR) lines; line sizes range from 20/100 to 20/16 (6/30 to 6/4.8). This chart can be used in an illuminated ESV1018 cabinet or hung on the wall.
Dimensions: 10" x 18" (25.4 cm x 45.7 cm).
Testing distance: 20 feet/6 meters.