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A test with pictures to indicate the presence of inherited color vision defects.
Ishihara Color Testing Book, 24 plate version. Numbers (15 plates) and patterns/ winding lines (9 plates).
Laminated HRR Pseudo-Isochromatic Color Vision Test, includes: Laminated pages provide lasting protection 6 plates for screening 14 plates to diagnose color deficiency
A simple and accurate method to detect congenital color vision deficiency (red/green defects). 14 plates total. Numbers (11 plates) and winding lines (3 plates).