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Results for “Color Perception Tests”

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PubMed1978

Cone-rod dystrophy: a case report.

Cone-rod dystrophy is considered one of the rarer hereditary retinal degenerations. This disease can be easily mistaken for a number of other conditions because of its unusual characteristics. This paper discusses these characteristics and presents a case report to illustrate how the optometrist can effectively manage patients with this disease.

Adolescent↗
PubMed1987

[Color vision].

Explore the source record for details and available documents.

Color Perception↗
PubMed1986

[Dyschromatopsia in subjects occupationally exposed to organic solvents].

Chromatic discrimination loss was evaluated with the Lanthony D-15 desaturated Panel among 89 workers professionally exposed to organic solvents and 114 non-exposed workers. Quantitative and qualitative analysis of the results reveal the following: among the non-exposed workers, the prevalence of tritanomalies and the mean colour confusion index increase with age; among the exposed workers, the prevalence of dyschromatopsia and the mean colour confusion index increase with age and with exposure level; for 4% of the moderately exposed workers and 26% of the highly exposed workers, protanomaly, deuteranomaly or scotopic loss were observed with the tritanomaly. Chromatic discrimination impairment may be an important indicator of neuro-ophthalmologic changes associated with professional exposure to organic solvents.

Adult↗
PubMed1986

Spectral sensitivity for observers with protanomalous, extreme protanomalous and protanopic colour vision.

Contemporary models of colour vision include a channel for luminosity arising from a combination of some or all of the cone outputs. Accordingly any alteration, reduction or loss at the cone level ought to affect the shape of the spectral sensitivity curve, yet there have been few reports of any significant differences being found between the curves of protanomalous and protanopic subjects. A modified minimum flicker technique was used to determine the spectral sensitivity curves of observers with protanomalous, extreme protanomalous and protanopic vision. Significant differences were found among the mean curves of these categories of vision from 550 nm upwards.

Adolescent↗