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 OTHER NAMES
- Acromatopsia.
- Alteration in the perception of the colors.
- Shortcoming to see certain colors.
DEFINITION
The color blindness is an alteration of the cells of the vision that produces an incapability to see certain normal colors.
CAUSES
In most cases, the problems of color blindness are of genetic cause due to a recessive gene tied to the sex, being this way very little frequent in the women while approximately 1 of every 10 men they suffer some form of color blindness.
There is a medicine that is used in rheumatic illnesses (hidroxicloroquina), which can cause color blindness.
The cells of the retina that discriminate against the colors are the cones, when some pigments are missing, these cells have incapability to distinguish certain colors.
The most frequent color blindness is for lack of only one pigment, giving problems to differentiate the red and green colors, but in different difficulty scales. In other occasions, for lack of other pigments problems can be had to discriminate against the blue and yellow colors, especially, but those who have this type of color blindness almost always have problems to identify also the red and green colors.
In the most intense form of color blindness (acromatopsia) it is not possible to see any color, and it usually associate to other ocular problems (lazy eye, nistagmo (rapid ocular movements), serious photosensibility and the deterioration of the vision).
SYMPTOMS
- Alteration to discriminate against the normal colors and tone.
- There can be an incapability to know if a person has color blindness, since not even the same one can notice it.
- In the infancy when learning of the colors is tried this incapability can be evident.
- In the serious cases (acromatopsia), rapid movements of the eyes can appear up and down and other symptoms.
DIAGNOSIS
There is different test to discriminate against the colors and to evaluate a color blindness and his intensity grade. The ophthalmologist will spend this all test to him adapted, and it is possible to come to a diagnosis only with this interview.
TREATMENT
It is not possible to treat, the best thing is to know it, to do a diagnosis to him and to learn to live with the well-known difficulties.
WHAT DOCTOR CAN TREAT ME?
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DENOMINATION 
