ETDRS Original Series Chart R for 10 feet/3 meters500046
An ETDRS eye chart. Part of the Chart R Original series for 10 feet/3 meters with proportionally spaced (geometric progression) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent.
Dimensions: 24.5 in x 25.5 in (62 cm x 65 cm).
Testing distance: 10 feet/3 meters.