This is especially the case for the child and even the parents who have to figure out how to deal with what their child is going through mentally and emotionally. In a nutshell, color blindness is a disorder that affects a person’s ability to see certain colors and differentiate between light and dark colors. Luckily, understanding this disorder and its effects will make it easier for parents, and their children, to overcome the problems that may arise from color blindness.
How Does Blindness Affect a Child’s Development?Ĭolor blindness is the result of issues that arise in the color-detecting nerve cells found in the back of the eye. As a result, some people find difficulty in telling the difference between green and red, and blue and yellow.Īchromatopsia is a rare form of color blindness in which people can’t see any colors at all and only see light or dark shades of gray. Just be sure to comfort your child or student! This may cause some obstacles in terms of completing certain schoolwork for a child, but color blindness is nothing that will have a drastic effect on their physical health. Reading a Color Blind Test: How to Tell if Your Child Is Color BlindĬhild color blind tests consist of a child viewing a picture with a green background. In the foreground are a yellow circle and a brown square. The results demonstrate that the test is fit for assessment of color discrimination in young children and may be a useful tool for the establishment of color vision thresholds during development.Colorblind children or teens will only be able to see the yellow circle, whereas those with normal vision should see the yellow circle and the faint brown square.ĭon’t worry if you find that your student or child is color blind. The protan and deutan thresholds were consistently lower than tritan thresholds, a pattern repeatedly observed in adults tested with the CCT. Color discrimination thresholds were progressively lower as age increased within the age range tested (2 to 30 years old), and the data-including those obtained for children-fell within the range of thresholds previously obtained for adults with the CCT. Experiment 2 tested the child-friendly software with children 2 to 7 years old (n = 25) using operant training techniques for establishing and maintaining the subjects' performance.
Results showed good agreement between the two test versions. Experiment 1 sought to evaluate the correspondence between the CCT and the child-friendly adaptation with adult subjects (n = 29) with normal color vision.
The modifications were performed for the CCT Trivector test which measures color discrimination for the protan, deutan and tritan confusion lines. Since the task of indicating the gap of the Landolt C used in that test proved counterintuitive and/or difficult for young children to understand, we changed the target stimulus to a patch of color approximately the size of the Landolt C gap (about 7 degrees of visual angle at 50 cm from the monitor). The present study aimed at providing conditions for the assessment of color discrimination in children using a modified version of the Cambridge Colour Test (CCT, Cambridge Research Systems Ltd., Rochester, UK).