ETDRS Vision Test Charts

ETDRS, stemming from the Early Treatment Diabetic Retinopathy Study, improves visual acuity testing with equal step size between rows and consistent letter spacing on a logarithmic scale, offering advantages over previous tests like Snellen and Sloan; often referred to as a LogMAR test, available in various formats, including back-lit charts for standardized luminance testing.

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  • Good-Lite 2.5% ETDRS Sloan Letter Contrast Chart for 13 feet (4 meters) Good-Lite 2.5% ETDRS Sloan Letter Contrast Chart for 13 feet (4 meters)

    2.5% ETDRS Sloan Letter Contrast Chart for 13 feet (4 meters)

    $82.95
    $82.95