Elsevier

Vision Research

Volume 21, Issue 8, 1981, Pages 1303-1306
Vision Research

New test for the detection of tritan defects evaluated in two surveys

https://doi.org/10.1016/0042-6989(81)90235-2Get rights and content

Abstract

An apparatus is described which tests for the presence of a tritan defect. It consists of a flickering blue test field seen on a steady yellow-orange background. The stimulus may be presented attenuated with a 2.6 neutral density filter or unattenuated. Tritans fail to see the attenuated stimulus. Inclusive of explanation the test takes about 2 min. In two surveys of 480 and 1023 subjects respectively, three congenital tritans were found. Also failing the test were two protans with a low sensitivity of the blue cone system, and a few subjects apparently not having a tritan defect but possibly ocular pathology.

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There are more references available in the full text version of this article.

Cited by (0)

With the word tritan we mean to include both the diand the trichromatic form of this color vision disturbance. The word tritanopia is generally used for the dichromatic form: for the trichromatic form incomplete tritanopia seems to be best expression, rather than tritanomaly, since an alteration system has never been demonstrated.

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