Translucent Low Contrast Charts (10 feet/3 meters)

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A low contrast test is a special way to measure visual acuity by determining how well eyes function in low light situations and/or the ability to distinguish objects from similarly colored or shaded backgrounds. Testing is identical to the measurement of visual acuity at high contrast levels. The 2.5% test is the most practical test in clinical use. Available in 5 contrast levels: 1.25%, 2.5%, 5%, 10%, and 25%. LEA SYMBOLS® charts include response key. All contrast charts include recording forms and instructions.

A LEA SYMBOLS®

1.25% (not shown) 253700

2.5% (shown) 253800

5% (not shown) 253900

10% (not shown) 254000

25% (not shown) 254100

B LEA NUMBERS®

1.25% (not shown) 271500

2.5% (shown) 271600

5% (not shown) 271700

10% (not shown) 271800

25% (not shown) 271900

C Sloan Letters

1.25% (not shown) 600754

2.5% (shown) 600753

5% (not shown) 600752

10% (not shown) 600751

25% (not shown) 600750