Many people suffer from vision problems and common problems (color blindness), which leads to the non-discrimination of some or all of the color, and spread the disease in men more than women, as the number of men with color blindness more than ten times In women infected with it. The cause of color blindness in some people due to the defect in the optic nerve in the eye or because of problems in certain areas of the brain, and spread the disease more in the age of aging because of the weakness of their optic nerve. Color blindness is a hereditary disease that can be transmitted from one person to another by genetics.
And suffers from the disease of color blindness in the difficulty of distinguishing some similar colors such as red and green, scientists have divided the disease of color blindness to three degrees:
- First class: the difficulty of distinguishing between green and red and their different degrees.
- Second degree: the difficulty of distinguishing between yellow and blue degrees and their different degrees.
- Third degree: the difficulty of distinguishing between all colors.
Most people with the disease do not realize it unless someone else can not distinguish between the colors or the disease is detected when they have a color blindness test. This test contains a set of color and dotted images, and each image has a specific color number Is different from the color of the image in which the number is present. The person under consideration must know the number inside the color image.
There is no doubt that the English scientist John Dalton is the discoverer of color blindness, and is the pioneer in the identification and study of chromatic blindness scientific study purely. The scientists have not been able to find a cure for this disease, as the only treatment is the development of contact lenses improve the level of vision and color discrimination.
There may be symptoms on the person with color blindness where the affected person can see a wide spectrum of all colors without realizing that he sees colors differently from what others see, as well as seeing some of the colors he sees in front of him rather than all of them. The disease can distinguish all colors, and in some rare cases can not see the person only three colors only are black, white and gray.