Related Experiment Video
Updated: Sep 11, 2025

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
Published on: July 21, 2020
Multicenter evaluation of the color vision screener test
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An international multicenter study was designed and carried out to evaluate the color vision screener (CVS) test for normal trichromats and congenital color deficients. Over 400 participants from nine international Colour Assessment and Diagnosis (CAD) testing centers completed the CVS and the CAD test on calibrated visual displays. The CVS had a sensitivity and specificity [95% confidence intervals] of 1.00 [0.98-1.00] and 0.99 [0.97-1.00] with a positive and negative predictive index of 0.94 and 1.00 for an assumed prevalence of 8%. The CVS is quick, efficient, and easy to use, and its sensitivity is equivalent to the optimal published Ishihara protocol.

