Landolt C ETDRS Clinical Trial Chart for ESV3000 and ESC2000500060
A Landolt C clinical trial ETDRS vision chart with proportionally spaced (geometric progression) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent. Features optotypes opening at the up, down, left & right position only.
Dimensions: 24.5" x 25.5" (62 cm x 65 cm).
Testing distance: 10 feet/3 meters.