PubMed · 5700934
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G Zerbe. 1968-04-30. [The chromopsychogram].. https://pubmed.ncbi.nlm.nih.gov/5700934/
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The results are given of a questionnaire study to determine the range of difficulties that doctors notice in their work due to congenital colour vision deficiency (CCVD). The study is primarily qualitative. A questionnaire was sent to 40 self-selected doctors, 35 of whom were general practitioners (GPs). All were administered a number of colour vision tests to assess the type and severity of their deficiency. Many difficulties and some ways of overcoming them were reported. Those with a mild deficiency reported fewer difficulties and this relationship was significant. Twenty-three of the doctors also reported difficulties as medical students and their answers are given verbatim. The results are discussed in relation to other studies and data on colour vision. The reasons for and against screening medical students for this deficiency are considered and it is concluded that there is a strong case for screening.
INTRODUCTION: The computerized chromatic test allows a graphic visualization of the colors perceived by normal and pathologic retina. MATERIAL AND METHOD: This test was returned by an album (six series of plates with ten levels of saturation), a lamp and a program for graphic representation. RESULTS: The graphic image was returned by the computer. For a normal eye, the aspect of the chart was a set of ten concentric saturation levels: the most saturated circle were located on the outside. For an acquired or congenital dyschromatopsia, the limits of the neutral zone are located in the center and are constituted by the most saturated level of blind charts of the album. DISCUSSION AND CONCLUSION: The informatized chromatic test is a very easy one to appreciate color vision defects.
Direct heterochromic comparisons were made in 334 examinations of 148 patients with glaucoma. This test evidenced the classical breaches of blue and also alterations in the red spectrum which were observed mainly in cases with an unfavorable course or during the most severe stages of the disease. This examination technique is easy to repeat and gives an accurate assessment of disease course. It is useful for guiding treatment.