Sloan Revised Low-Contrast Chart for Large Illuminator Cabinet

Sloan Revised Low-Contrast translucent chart, designed to fit the 2425 and 2425 LED Large ETDRS® Illuminator Cabinets. Available in three formats — Original, Scrambled A, and Scrambled B — across four testing distances (2 m, 2.5 m, 3 m, 4 m) and five contrast values (1.25%, 2.5%, 5%, 10%, 25%).

Use Scrambled A and Scrambled B as alternate-form charts for repeat measurement or two-eye protocols, eliminating learning effects between examinations.

Contrast Sensitivity plays an intricate part in everyday life. Testing contrast sensitivity helps to establish a record of what is normal for each patient, since everyone's contrast sensitivity is unique. After establishing this accurate record for the patient, pinpointing abnormalities will be easier and can lead to quicker detection of vision problems. Abnormal contrast sensitivity results can help detect early signs of diseases such as Parkinson's, Glaucoma, Cataracts and Glare problems, among many others.

The Sloan low contrast vision test features equivalents on each side of the chart — Meters, Feet, LogMAR, and Decimal — for easy translation and conversion of equivalents. Coupled with Sloan letters, true contrast levels and ETDRS-style format, this chart family delivers a clinically robust low-contrast acuity assessment.