dyschromatopsia


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dyschromatopsia

 [dis″kro-mah-top´se-ah]
disorder of color vision.

dys·chro·ma·top·si·a

(dis'krō-mă-top'sē-ă),
A condition in which the ability to perceive colors is not fully normal. Compare: anomalous trichromatism, dichromatism, monochromatism, chromatopsia.
[dys- + G. chrōma, color, + opsis, vision]

dys·chro·ma·top·si·a

(dis'krō-mă-top'sē-ă)
A condition in which the ability to perceive colors is not fully normal.
Compare: dichromatism, monochromatism, chromatopsia
[dys- + G. chrōma, color, + opsis, vision]

dyschromatopsia

General term given to deficiencies of colour vision, especially acquired defects. See defective colour vision.
References in periodicals archive ?
The connection between blue-yellow axis dyschromatopsia preceding diabetic retinopathy was observed in recent studies [51-53].
All patients show reduced contrast sensitivity and dyschromatopsia, which are often out of proportion to the visual acuity deficit.
Acquired central dyschromatopsia: Analysis of a case with preservation of color discrimination.
The papillomacular bundle is affected first, and its apoptosis and axonal swelling are responsible for the central VF loss, as well as dyschromatopsia [20].
The patient had suffered, to variable degrees, from painless blurred vision, dyschromatopsia, and micropsia for more than 2 years.
Our results showed that diabetic patients without demonstrable retinopathy have an increased incidence of acquired dyschromatopsia. In this study, impaired colour vision in group I NIDDM subjects were 30 out of 85.
The left eye also exhibited a large central scotoma, dyschromatopsia, and a left afferent pupillary defect.
Patients may experience a variety of visual disturbances from asymptomatic to a sudden onset of blurred vision, micropsia, metamorphopsia, dyschromatopsia, or paracentral scotoma [1].
(3) Patients may complain of blurring of central vision, dyschromatopsia, metamorphopsia, micropsia.
In its congenital form, there is a complete absence of cone cell activity, a condition also referred to as 'rod monochromacy' or 'total colour blindness.' A less severe form of the disorder is called dyschromatopsia, the most common symptom being 'hemeralopia' and as a result, achromatopsia frequently leads to photophobia.