17-287

defective colour vision

anomaly of vision in which there is a reduced ability to discriminate between some or all colours

NOTE 1 Anomalous trichromatism: Form of trichromatism in which colour discrimination is less than normal.

NOTE 2 Deutan: Adjective denoting deuteranopia or deuteranomaly.

NOTE 3 Deuteranomaly: Defective colour vision in which discrimination of the reddish and greenish contents of colours is reduced, without any colours appearing abnormally dim.

NOTE 4 Deuteranopia: Defective colour vision in which discrimination of the reddish and greenish contents of colours is absent, without any colours appearing abnormally dim.

NOTE 5 Dichromatism: Defective colour vision in which all colours can be matched using additive mixtures of only 2 matching stimuli.

NOTE 6 Monochromatism: Defective colour vision in which all colours can be matched using only a single matching stimulus.

NOTE 7 Protan: Adjective denoting protanopia or protanomaly.

NOTE 8 Protanomaly: Defective colour vision in which discrimination of the reddish and greenish contents of colours is reduced, with reddish colours appearing abnormally dim.

NOTE 9 Protanopia: Defective colour vision in which discrimination of the reddish and greenish contents of colours is absent, with reddish colours appearing abnormally dim.

NOTE 10 Tritan: Adjective denoting tritanopia or tritanomaly.

NOTE11 Tritanomaly: Defective colour vision in which discrimination of the bluish and yellowish contents of colours is reduced.

NOTE12 Tritanopia: Defective colour vision in which discrimination of the bluish and yellowish contents of colours is absent.

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