Doctor insights on:
What Are The Symptoms Of Color Blindness
Color mistakes: Color blindness (we call it deficiency) causes failure to distinguish colors along certain patterns of confusion. So a red-green deficient person cannot make that distinction between objects of those shades. From a practical standpoint, color deficiency is a bar to certain occupations such as fruit grader, electronics assembly, some law enforcement jobs, certain types of painting, etc. ...Read more
Vision impairment and blindness are conditions in which a person cannot see well or see at all, even with glasses or contact lenses. If a person's best vision (with correction) out of either eye is only 20/70 - 20/200, he is impaired. If he can see no better than 20/200 or his visual field is no more than 20 degrees (severe "tunnel" vision), ...Read more
The same: Inherited color blindness does not have early symptoms but is the same throughout life. It becomes known when the color deficient person compares his recognition with others. Color blindness can also occur with advancing retinal pathology like untreated diabetic retinopathy and rarely brain stroke issues. ...Read more
School age: Most color deficiency of the more severe type is recognized in art activities in elementary school when inappropriate color matches are made. Milder forms of color deficiency are frequently not noticed until adulthood and in some cases not at all as the recognition failure can be very subtle with little practical import. ...Read more
Color blindnes: A color blind person does not know of his problem until he compares himself with others. The visual acuity is usually normal. Color recognition is diminished along the axis of confusion for the type of deficiency. If you have this you could not be employed in color dependent occupations such as microcomponent assembly or fruit grading. ...Read moreSee 1 more doctor answer
About 8%: The standard statistics for inherited color deficiency is about 7.5% in males and 1/2 % in females. This can vary somewhat with different racial groups. The degree of color deficiency and the type are variable so your ophthalmologist can test you and see in which category you are if that is important to you and also give you information about your family possibilities. ...Read moreSee 1 more doctor answer
Depends upon age: Obviously inability to distinguish between red / green colors. Some have trouble with blue/yellow. It does assume the child knows his colors. I am not aware of a condition where no colors are seen. These are usually specific to certain colors. ...Read more
Testing: The most common type of "color blindness" is red-green color deficiency. Blue-yellow deficiency or true color blindness (achromatopsia) are rare. Color testing can identify which. The problem is a lack of certain types of cones or their opsins (light-sensitive compounds). Red-green deficiency can be adapted to fairly easily and is not very limiting, but the others can significantly impact vision. ...Read moreSee 1 more doctor answer
Several types: There are several different types of inherited color deficiency varying in spectrum and intensity. You can lose color recognition by advanced retinal disease like diabetes or retinitis pigmentosa. Optic nerve disease can change color recognition and there are a few rare cortical strokes that can do this. ...Read moreSee 1 more doctor answer
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