General Information About Color Blindness
Disease Details and Frequently Asked Questions
It is the confusion or faded perception of colors caused by a defect in the color pigment cells (cones) in the retina, the light-sensing nerve layer at the back of the eye.
No, complete color blindness (seeing the world like a black-and-white television) is an extremely rare condition occurring in one in a million. Most patients can see colors but struggle to distinguish between red and green hues (or blue and yellow).
The disease gene is carried on the X chromosome. Because women have two X chromosomes, one healthy gene can mask the disease. Men, however, only have one X chromosome; if this gene is defective, the man is directly affected by color blindness.
Yes. Color blindness can be an obstacle when entering professions where color discrimination is vital, such as aviation (piloting), maritime navigation, policing, the military, or electrical/electronic engineering.
A definitive diagnosis is made in seconds by looking at the 'Ishihara Test' book (color plates), which contains hidden numbers or paths formed with small dots of different colors.
Since it is a genetic deficiency, there is no medical cure (via medication or surgery). However, glasses or contact lenses with special coatings that enhance color contrast can be used to help the patient perceive colors more accurately.
Our health library contents are prepared for informational purposes only and with scientific data available at the time of recording. For all your questions, concerns, diagnosis, or treatment regarding your health, please consult your doctor or a healthcare institution.
