Berkeley Discs Contrast Sensitivity Test

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Designed by Dr. Ian Bailey of the University of California, Berkeley, School of Optometry. This test of contrast sensitivity has three double-sided cards. On each of the six sides, there is a 6-cell grid of 80 mm squares. On each of the sides, three of the 6 cells contain large (50mm) discs of different contrasts. Each Card contains 6 Discs of varying individual contrast levels. The contrast sensitivity values are expressed in log units of contrast sensitivity using the Weber contrast ratio. See instructions below for further details. Instructions for the Berkeley Contrast Sensitivity Test Show more