Tuesday, February 18, 2014
Ebsaar - Colour blindness
Colour blindness is a common phenomenon that affects mostly men. With an average of 1 in 12 men experiencing difficulty in seeing either, blue, red, or green. Women also have colour vision deficiency, (CVD), but the number of reported female cases are fewer; about 1 in 200.
Complete colour blindness is very rare, where the person can see objects clearly, for both near and far objects, but will see everything in black and white. CVD is hereditary but people can become affected by the condition with over use of medication, or after diseases like diabetes or sclerosis. Colour blindness can also begin at old age, when the eyes become strained and colour sensitive cells get damaged over time.
There are certain instances when colour blindness is not detected, if the problem persisted from birth. In this case, until you realize you are not seeing colour as another individual is, colour blindness may not be apparent to you.
For genetic colour blindness, the condition is passed down from mother to son, which is why many more men are affected by CVD than women are. Colour blindness usually referred to as red/green or blue/red colours does not mean that only these colours are not reflected properly. People who have the condition will struggle to see other colours that have these colours in them. For example, if you had a red/green colour blindness, you will struggle to distinguish purple, or with green, you may not see green properly either, and will therefore see greens as blacks instead.
Colour blindness can be so mild, that many young children do not even know they have it. Only about 40% of all patients who visit an ophthalmologist are aware of the difficulty that in distinguishing colour.
People with colour blindness are only able to identify between six and eight crayons out of a box of 24 correctly. Depending on the extent of colour blindness, most people struggle to correctly identify traffic lights as well. Which is why in every country, the red is always on the top, and the green always at the bottom to help male drivers avoid collisions by confusing colours.
Diagnosing colour blindness is easy, however the problem is knowing when there is a problem. If the condition is genetic, children learn to identify colour by what they have been taught. If you were tell them a strawberry is red, and an orange is orange, when you point to them again, as common knowledge they are able to correctly say the colour. However, as they grow older, they may find it difficult to distinguish colours in day to life when they notice what they see is different from what others see.
A regular eye exam done by an optometrist Dubai, is able to diagnose colour blindness easily. If you know or have someone in your family that has colour blindness, it is advised to check your family's colour vision regularly especially school aged children. Ebsaar Eye Surgery Center and Vision Correction Solutions provides comfortable colour testing and vision care solution to help the person distinguish colour as much as possible.
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