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ETDRS Low Contrast Letter Charts

Varenr:50022
Fra 754,-
3 på lager
BeskrivelseDOKUMENTER
Beskrivelse
ETDRS Low Contrast Letter Charts Sku(s): 500022 (1.25% Contrast), 500021 (2.5% Contrast), 500021A (2.5% Contrast), 500020 (5% Contrast), 500019 (10% Contrast), 500023 (25% Contrast) Description: ETDRS low contrast Sloan Letter vision chart with proportionally spaced (geometric progression) lines translucent low contrast letter chart with line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent. Available in 5 contrast levels: 1.25%, 2.5%, 5%, 10% and 25%. Chart size is 24.5" x 25.5" (62 cm x 65 cm). The 2.5% contrast chart is offered in 2 versions (500021 & 500021A). Both charts have a 2.5% contrast level but the optotypes are scrambled for repetitive testing situations. 13 feet, 4 meters testing distance. Note: This chart can only be used with our ESV3000 or ESC2000 illuminated ETDRS cabinet.
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2394