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Colour Blindness Has An Impact On A Significant Proportion Of The Population But There Is No Treatment As The Issue Is Caused By An Inherited Genetic Defect
Colour Blindness (also referred to as Colour Vision Deficiency) is one of those health issues which virtually everyone has heard of. It is, as the name suggests, the inability to recognise and distinguish between particular colours. It is caused by a faulty gene in the X chromosome and is far more often found in males than females, although it is clear that a mother can inherit the faulty gene and transmit it to her offspring.
A very small group of females do experience colour blindness, but the number is only approximately less then one percent of the population compared to instances of males who experience the problem which is believed to be somewhere between eight to ten percent of the population, depending on which surveys you believe.
The most regular kind of colour blindness is that where red and green are difficult to identify, or the sufferer has problems differentiating between variations of red, green, brown and orange. A rare type of the complaint prevents identification of blues and yellows, and an even rarer variant means that the sufferer will not see colour at all and instead occupies a black and white world.
The odd thing is that the defect itself is utterly harmless (though it may explain some of those ropey outfits spotted on a night out!) and it doesn’t generally have any other serious impact on the overall quality of the sufferer’s ability to see. Of course, someone who has colour blindness may also be short or long sighted, and whilst corrective lenses or Laser eye surgery may solve that problem, it will have no effect at all on the individual’s ability to view colours correctly.
The fact that the problem does no harm and has no side-effects on the sufferer means that there are probably quite a number of people out there who are oblivious to the fact that they suffer from it, until they find some reason to get their eyes assessed. For example, there are some careers where colour blindness can cause major problems and for various quite obvious reasons some organisations may exclude those who suffer. The Royal Air Force in the UK has a strict policy of requiring perfect sight and no colour vision defects for their newly recruited pilots. Whilst they will continue to support trained pilots who later develop eye defects and let them use glasses or have Laser eye treatment to rectify the problem, anyone with colour blindness will have been born with it, so sadly there is no likelihood of them becoming an RAF pilot.
It may seem strange that an eye defect such as this has not ever been subject to research to try and find a way of correcting the vision, in particular when there are so many treatments for other eye complaints, such as Laser eye surgery for long and short sightedness, lens removal and replacement for those with cataracts and conventional surgery to relieve the impact of glaucoma. However, these are all issues which are caused by defects or imperfections in the workings of the eye itself, and not a genetic fault inherited from generation to generation. It therefore seems highly unlikely that science is likely to invent a miracle Laser eye cure or surgical treatment that can mend a defective colour identification gene.
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