Color matching in autosomal dominant tritan defect

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Abstract
We evaluated color matching in 39 observers with an autosomal dominant tritan defect. Eleven tritans were dichromats with a 1° field, and only two were dichromats with an 8° field. Twenty-one of the tritan observers had normal blue–green equations with an 8° field, indicating that autosomal dominant tritans have short-wavelength-sensitive cones. Some of the tritan observers showed a shifted blue–green equation, which was ascribed to rod activity.

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