HOTV ETDRS Chart with 50% Crowding Bars

HOTV ETDRS Chart with 50% Crowding Bars

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This chart features HOTV optotypes with 50% spaced contour interaction bars to provide single optotype acuity with the proper crowding effect. Optotype line sizes range from 13/66 to 3/6.5 (4/20 to 4/2) equivalent. The other equivalents on this chart are letter size, 20 foot, 6 meter, decimal, and LogMAR.

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.

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