Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - 8 Position Landolt "C"

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An 8 Position Landolt C clinical trial chart with openings at the up, down, left, and right angles. Each angle is 45º. Features proportionally spaced (geometric progression) lines; line sizes range from 10/100 to 10/5 (3/30 to 3/1.5) 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. Addtional Resources Click here for the 500073-01-3 (previously 500072) Answer Key. What is ETDRS? Show more