Sloan Letter Proportionally Spaced Distance Chart800738
A Sloan Letter translucent eye chart with proportionally spaced (logMAR) lines; line sizes range from 20/160 to 20/10 (6/48 to 6/3) equivalent. 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: 13 feet/4 meters.