ETDRS original series 2 m – SLOAN letters, chart "1" NCKZO

Original Series ETDRS Distance Charts made for 6.5ft/2m testing distance. Features optotypes with proportionally spaced (logMAR) lines; line sizes range from 6.5/65 to 6.5/3.2 (2/20 to 2/1) equivalent. The other equivalents featured on this chart are letter size, 20 foot, 6 meter, decimal, and LogMAR. These are part of the revised versions of the original ETDRS series based on more recent research.

Available variants are Chart R, Chart 1, and Chart 2. All charts are screen printed on styrene plastic and clear coated for long-lasting durability.

ESV3000 ETDRS Clinical Trial Standardized Viewer and ESC2000 Illuminated ETDRS Clinical Trial Cabinet compatible.

Dimensions: 24.5" x 25.5" (62 cm x 65 cm).

Testing distance: 6.5 feet/ 2 meters.

What is ETDRS?