E and C Charts ETDRS Clinical Trial Chart for ESV3000 and ESC2000500072
8 Position E and C Clinical Trial Charts chart with C openings at up, down, left, right and each 45º angle.
Landolt Tumbling C ETDRS vision testing chart with proportionally spaced (geometric progression) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent. Landolt Tumbling C chart is available in 2 scrambled version for those that are performing repetitive vision testing.
Chart measures 24.5" x 25.5" (62 cm x 65 cm). 10 feet, 3 meter testing distance.