tritanopia

(redirected from blue-yellow blindness)
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tritanopia

 [tri″tah-no´pe-ah]
defective color vision in which the blue-sensitive pigment of the retinal cones is absent. adj., adj tritanop´ic.

tri·ta·no·pi·a

(trī'tă-nō'pē-ă), [MIM*190900]
Deficient color perception in which there is an absence of blue-sensitive pigment in the retinal cones.
[G. tritos, third, + an- priv. + ōps, eye]

tritanopia

/tri·ta·no·pia/ (tri″tah-no´pe-ah) a rare type of dichromatic vision marked by retention of the sensory mechanism for two hues only (red and green), with blue and yellow being absent.tritanop´ic

tritanopia

(trī′tə-nō′pē-ə)
n.
A visual defect characterized by the inability to discern blue and yellow.

tri·ta·no·pi·a

(trī'tă-nō'pē-ă)
Deficient color perception in which there is an absence of blue-sensitive pigment in the retinal cones.
[G. tritos, third, + an- priv. + ōps, eye]

tritanopia

Unable to appreciate the colour blue. This is a rare defect of colour perception.

tritanopia 

A rare type of dichromatism in which blue and yellow are confused. The tritanope only sees two colours: reds on the long-wave side, and greens or bluish greens on the other side of his neutral point, which is situated around 570 nm. Tritanopia occurs more often as an acquired type as a result of retinal disease or detachment, glaucoma, diabetes, retinitis pigmentosa, etc. Congenital tritanopia is very rare: it is estimated at about five males and three females in 100 000. Syn. blue blindness; blue-yellow blindness. See defective colour vision; dichromatism; pseudoisochromatic plates; Farnsworth test.

tri·ta·no·pi·a

(trī'tă-nō'pē-ă) [MIM*190900]
Deficient color perception in which there is an absence of blue-sensitive pigment in the retinal cones.
[G. tritos, third, + an- priv. + ōps, eye]