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General Discussion / Learn about red and green color blindness in humans
« on: November 07, 2023, 03:57:22 AM »
What is color blindness?
Color blindness or color vision disorder is a manifestation of the eye's inability to distinguish the colors of surrounding objects, which can be red, blue, green or a mixture of these colors. The most common cases are red and green color blindness in humans.
What is red and green color blindness in humans?
In the retina of the eye there are two types of rod cells and cone cells that detect light. Cone cells help detect colors such as red, green, and blue. When these cells are absent, inactive, or detect colors differently than normal, you may be color blind test. Some possible cases are:
Mild green color blindness: This is the most common condition, usually seen in 5% of men, rarely seen in women. Then you will see that green and yellow look more red, making it difficult to distinguish blue from purple.
Mild red color blindness: Usually affects 1% of men. At this time, red, yellow and orange will be greener and darker than usual. At this level, the disease still does not affect daily life much.
Red color blindness: Because red cone cells no longer work, resulting in red vision becoming dark gray. Besides, orange, yellow or green colors will lean more towards yellow shades.
Green color blindness: Similar to the mechanism of red color blindness, when the green cone cells no longer work. Green can now turn into beige, a golden gray, while red will become golden brown.


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General Discussion / What should be tested for color blindness?
« on: June 16, 2023, 02:31:39 AM »
There are screening tests to detect color blindness and the following specialized tests to help understand the type and severity of color blindness. The Ishihara Color Test, or color blind test application, is a common type used to diagnose color blindness.
The patient looks at a picture book of mixed colors to see if they can distinguish them. Pictures that contain dots of all different colors and sizes. A number or shape of a different color will be placed in those dots. People who are color blind will have difficulty seeing numbers or shapes, or they may not see at all.
How to overcome color blindness
To date, there is no complete cure for color blindness. However, you can refer to some of the following measures to overcome color blindness:
Use a color filter: This is a type of glass developed with the ability to increase the contrast between colors that the patient cannot distinguish. Filters can help colorblind people distinguish colors, but they cannot treat the disease.
If the cause of the disease is due to the use of drugs or a complication of another medical condition, the color blindness will disappear when you stop taking the drug or treat the underlying condition.
In order to live without color blindness affecting patients, it is necessary to learn to live with it. For example, children with color blindness need to be detected early and supported from a young age so that they do not have difficulty with things related to color discrimination, such as learning the order of traffic lights,...

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