Ortho-Rater color vision test compared with the Ishihara and the Pseudo-Isochromatic Plates.

1951 ◽  
Vol 35 (2) ◽  
pp. 127-129
Author(s):  
Newell C. Kephart ◽  
Melvin J. Tieszen
Keyword(s):  
Color Vision ◽  
Color Vision Test

NOTE ON COLOR PREFERENCE AND COLOR VISION TEST PERFORMANCE

1989 ◽  
Vol 69 (3) ◽  
pp. 1039-1042 ◽  
Author(s):  
L. W. BUCKALEW ◽  
NANCY MAITS BUCKALEW ◽  
SHERMAN ROSS
Keyword(s):  
Color Vision ◽  
Test Performance ◽  
Color Preference ◽  
Color Vision Test

Color-blindness simulation for red-green and blue-yellow ambiguity

2021 ◽  
pp. 1-12
Author(s):  
Sheida Anbari ◽  
Hamid Reza Hamidi ◽  
Shokoh Kermanshahani
Keyword(s):  
Color Vision ◽  
Color Perception ◽  
Color Blindness ◽  
Daily Activities ◽  
Reasonable Accuracy ◽  
Simulation Performance ◽  
Normal Color Vision ◽  
Test Kit ◽  
Different Types ◽  
Color Vision Test

Color blindness has important effects on people’s daily activities, since most activities require a discernment between colors. It is very important for engineers and designers to understand how colorblind people perceive colors. Therefore, many methods have been proposed to simulate color perception of people affected by Dichromacy and anomalous Trichromacy. However, the simulation results rarely have been evaluated with the reports of concerned individuals. In first study, we tried to simulate the color perception of people with different types (red and green) and different degrees of color blindness. Different degrees of red-green deficiency is simulated on the 24-plates brand of the Ishihara color vision test kit. Then simulated plates were tested on people with normal color vision. The results show that the simulation performance is better in the case of high degrees of red-green deficiency. There is also a clear difference between the assessment of female and male volunteers. In another study, the perception of the color of people with blue-yellow blindness is also considered. The proposed blue-yellow blind simulation is compared with the result of another research project. The results show that the color perception of individuals with different degrees of blue-yellow blindness can be reconstructed with a reasonable accuracy.

scholarly journals The burden of color vision defect in Nepal – an iceberg phenomenon

2019 ◽  
Vol 9 (4) ◽  
pp. 69-71
Author(s):  
Anadi Khatri ◽  
Bal Kumar K.C ◽  
Sudhir Gautam ◽  
Muna Kharel
Keyword(s):  
Color Vision ◽  
Early Stage ◽  
Descriptive Analysis ◽  
School Level ◽  
Color Vision Defect ◽  
Vision Defect ◽  
Color Vision Defects ◽  
Color Vision Test ◽  
Sequential Group ◽  
Vision Defects

Background: Color vision tests are routinely performed and are mandatory in most part of the world. However, in Nepal and many other developing countries, color vision may often be overlooked. We evaluated a possible burden of color vision in a group of patients who were specifically evaluated for a color vision defects. This study evalutes the awareness of color vision defect among the patients evaluated and highlights the importance of the color vision evaluation. Methods: A sequential group of 73 people from August to September 2017 specifically evalu­ated for color vision defect for recruitment of government employment were evaluated. Ishi­harapseudo-isochromatic plates and Farnsworth-Munsell Dichotomous D-15 test were used for screening. Mean and Standard deviation were used for descriptive analysis of the data. Results: Fifty-seven were male and sixteen were female. The mean age was 23 years (SD ± 3.7). On evaluation of the color vision defect, 9 (12.3%) were found to have total color vision defect (achromatopsia), 3 (4%)-red-green defect and 1(1%) with blue red defect. None of the patients had undergone color vision test at eye hospital previously. There were 4 patients who were registered drivers who had color vision defect. Conclusions: Color vision is an important part of the vision. It should not be ignored.All of the patients evaluated were found to be unware of their condition. Early detection of color vision defects in individuals, if possible, at school level can help them to determine their careers and future endeavors at early stage.

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