8 Position Landolt C Charts ETDRS Clinical Trial Chart for ESV3000 and ESC2000
5000708 Position Landolt C clinical trial charts with openings at the up, down, left, and right angles. Each angle is 45º. Features proportionally spaced (geometric progression) lines; line sizes range from 13/131 to 13/6.5 (4/40 to 4/2) equivalent. The other equivalents featured on this chart are letter size, 20 foot, 6 meter, decimal, and LogMAR. Available in 2 scrambled versions for those that are performing repetitive vision testing.
ESV3000 ETDRS Clinical Trial Standardized Viewer and ESC2000 Illuminated ETDRS Clinical Trial Cabinet compatible.
Dimensions: Height 24.5" x Width 25.5" (62 cm x 65 cm).
Testing distance: 13 feet/4 meters.
Click here for the ETDRS Guide.
Click here for the 500070 Answer Key.