Combination Sloan Letter & Astigmatic Wheel Chart800718
Translucent distance visual acuity chart with both Sloan Letter and Astigmatic Wheel. Sloan Letter optotypes are linear-spaced lines; line sizes range from 20/40 to 20/16 (6/12 to 6/4.8). This combination chart can be used in Good-Lite's illuminated ESV1018 or hung on a white wall. Chart size measures 10"x18" (25.4 cm x 45.7 cm).
20 feet, 6 meters testing distance.