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Binocular/Colour/Perceptual Vision > Colour Vision > Flashcards

Flashcards in Colour Vision Deck (12):
1

Anomalous trichromat

Limited discrimination, but still contains all three photopigments.

2

Protanomlous trichromat

Sensitivity spectrum shifted to lower wavelengths, less sensitive to longer wavelengths. Red weak. Requires more red to match.

3

Deuteranomolous trichromat

Sensitivity spectrums hifted to longer wavelengths. Green weak. Requires more green to match.

4

Tritanomaly

Inherited blue-yellow wavelength spectrum shift. More rare.

5

Monochromatism/Achromatopsia

Rare condition of not being able to distinguish colours. They only have one retinal cone or lack all cone function/rod monochromat.

6

Protanope

Red deficient/lack erythrolabe - sensitivity reduced in the higher wavelengths.

7

Deuteranope

Green deficient/lack chlorolabe

8

Tritanope

Inherited blue-yellow deficiency

9

True/False: Nagel anomolascope can differentiate trichromacy and dichromacy.

TRUE: can distinguish between anomolous trichromacy and dichromat.

10

Most likely to have red/green colour defects?

Male.

Bilateral and stable usually.

11

Cause of acquired blue/yellow colour defects?

Outer retinal disease

12

Cause of acquired red/green colour defects?

Inner retina/optic nerve or visual pathway abnormalities, asymmetric or unilateral, progressive