Colour blindness refers to an individual’s inability or deficiency to see colours or variance in their appearance. It must be noted that this anomaly isn’t at all a form of ‘blindness’. Anyone having this specific vision problem would face difficulty in distinguishing certain shades like blue, red, yellow, green or any other per se.

Colour vision deficiency or colour blindness in common is mostly inherited and affects males more frequently than females. A survey estimated that more or less eight-percent males and less than one-percent females suffer from colour vision anomaly. Differentiating or inability to see shades that are red and green are more common in this condition.

Then again, a person may inherit a genetic trait with reduces the ability to identify shades of yellow and blue which may occur in men and women equally.

Signs & symptoms

If you’ve difficulty in differentiating the colours per their specific shades like blue, yellow, green or red and people usually inform that the colour you’ve perceived is wrong, these are primary signs of colour vision deficiency or colour blindness. Putting the age-old belief aside, it’s rare of a colour blind person to see only shades of grey but certain hues appear washed-out or a confusing mix.

All those who’ve developed the colour vision anomaly which hampers their ability to experience the world in its true shade are recommended to consult an eye specialist in Dubai immediately. Remember that imminent or even gradual loss of colour vision may be an indication of various underlying health anomalies including cataracts.

The doctor would conduct a medical examination/test for colour blindness to determine the type of colour deficiency you have.


The anomaly occurs when the retinal light-sensitive cells fail responding properly to different light wavelengths through which we’re able to see the many shades out there. The ‘photoreceptors’ in the retina are known as rods and cones with ‘rods’ being more abundant in a healthy human eye (approximately 100 million rods) and these are far more sensitive to light but, incapable to perceive colours.

In fact, the six to seven million cones in the human retina are responsible for the colour view whereas the photoreceptors are located in concentration at the central retina called the ‘macula’. The macular centre is called the ‘fovea’ which is tinniest yet contains highest most concentration of the cones in the retina that are responsible for most acute and accurate colour vision. Genetic inheritance aside, other causes of colour blindness include;

  • Parkinson’s Disease
  • Cataracts
  • Leber’s Hereditary Optic Neuropathy (LHON)
  • Kallman’s Syndrome
  • Tiagabine for epilepsy

Treatment & prevention strategies

The coming of gene therapy has cured colour vision deficiency in monkeys as per the study reports back in 2009 released by the researchers at the University of Florida and the University of Washington. Although early results look promising, the therapy isn’t considered for humans unless proven 100% safe.

People get acquainted to the colour vision deficiencies in early stages of their life whereas the anomaly is also diagnosed during this period. Specialised lenses may be recommended by an eye specialist in Dubai as a preventive measure.


Always talk about the colour deficiency to someone so as to prepare for necessary steps taken under specific situations.