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Color vision evaluation test
Author(s) -
IONICA V
Publication year - 2014
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2014.t011.x
Subject(s) - color vision , artificial intelligence , computer science , computer vision , chromatic scale , trichromacy , test (biology) , colour vision , set (abstract data type) , color vision defects , primary color , optometry , medicine , mathematics , paleontology , combinatorics , biology , programming language
Purpose Color Vision Evaluation Test (CVET) is used to test sensitivity to color and makes it possible to identify and evaluate all color vision disabilities. Methods CVET is made up of a set of 72 pseudoisochromatic images, a lamp that provides daylight illumination, and software to acquire a graphic representation of the results of the investigation. The test makes it possible to diagnose all deficiencies in seeing color, both hereditary and acquired, and measure the deficiencies on a ten level scale. Color vision has been calibrated in the same way as vision acuity. Normal color vision is considered 1, and an anopia (complete absence of a color from the chromatic spectrum) is considered 0. Between these two values there are 9 levels of an abnomal trichromacy marked from 0.9 to 0.1. The lamp provides a consistent and adequate illumination of the text charts so that the test can be replicated identically. Results The software suggests a diagnostic of the deficiency, provides 3 graphic representations, and offers a simulation of the vision of the patient on pictures chosen by the person who administers the test to better evaluate the professional abilities of the person whose color vision is tested. Conclusion The test provides accurate measurements that make it possible to evaluate the professional abilities in cases of hereditary dyschromatopsia as well as following the progress of vision disabilities or other illnesses that cause vision diasbilities.