4417

5% ETDRS SLOAN LETTER CONTRAST CHART FOR

Varenr:500028
1 131,-
-+
Bestillingsvare0dager
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Beskrivelse

Sloan Letter vision chart with proportionally spaced (geometric progression) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent. Revised version of the original ETDRS, series with each line being equally difficult. Chart measures 24.5" x 25.5" (62 cm x 65 cm).

10 feet, 3 meter testing distance.

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