2.5% Contrast
Notations for vision testing at 2 meters (6.5 ft.)
Acuity range 20M to 1M (20/200, 6/60 to 20/8, 6/2.4 equiv.)
Two groups for repetitive testing
Includes a soft-tipped pointer, recording forms (CAT. NO. 2514) and test instructions
Eye Chart measures 62 X 65 cm (24.5 X 25.5 in.)
• NOTE: CAT. NO. 2425 ETDRS Illuminator Cabinet is necessary with this chart.
Contrast vision tests are calibrated using the large ETDRS sized Illuminator cabinet (Cat. No. 2425). By using this cabinet, contrast tests have a equal and constant source of retro illumination. This illumination is key to having an accurate and reliable contrast sensitivity test. Without the use of the Illuminator Cabinet, contrast vision tests would be inaccurate.
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