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Mixed Contrast/ Variable Distance Colenbrander Vision Chart
The Colenbrander Mixed contrast chart contains Black and 20% Weber (11% michelson) contrast. Acuity values are printed on the sides for testing at 1 meter and 2.5 meters with Visual Acuity score (VAS), Snellen Acuity and M units. This chart is designed for use in the ETDRS Illuminator Cabinet (Cat.No. 2425).