Basically, colour vision deficiency is a medical condition where a person is unable to differentiate particular shades of colour. In much more extreme cases, it may end up being known as colour blindness. It's however difficult to locate individuals suffering from total colour blindness. This implies that a person suffering from colour vision deficiency may actually see colour but finds it difficult to differentiate in between certain shades or either reds and greens or blues and yellows.

People who're completely colour blind suffer from an ailment known as achromatopsia and may only see things in black, white or perhaps in shades of grey. The severity of colour vision deficiency differs based on what caused it. Naturally, in the event that the condition impacts both eyeballs, chances are that the condition will be genetic. If it affects just one eyeball, then it could be that the reason behind the deficiency is actually illness or injury.

Whenever an individual happens to be partly colour blind it could end up being mainly because the photoreceptors within the retina, known as rods and cones, have already been damaged. The cones have pigments that are responsive to certain wavelength of light, that allows the brain to combine the information delivered to it coming from both rods and cones, via the optic nerve, to produce standard colour vision. Whenever either of the receptor cells will be damaged, then the brain will not be in a position to distinguish the colours which the rods and cones will end up being getting.

Other cause of colour vision deficiency might end up being a few particular illnesses that harm the optic nerve or retina for example diabetic issues, glaucoma, Parkinson's disease as well as macular degeneration among numerous other illnesses. Particular kinds of medication that deal with heart related illnesses, nervous disorder or even psychological problems may cause colour vision disorder. Moreover, as individuals get older, their ability to see as well as distinguish in between different shades of colour gradually lessens.

To be able to figure out that a person is actually struggling with colour vision deficiency, it would be necessary to have the patient go through a thorough eye examination that should range from the use of pseudo-isochromatic testing plates. This specific type of test is actually successful in identifying whether a person is suffering from a deficiency as well as which deficiency it may be. The test involves asking an individual to identify a particular pattern, either a letter or perhaps a number, among coloured dots. A person's inability to make out the pattern indicates that he's struggling with colour vision deficiency.

As for treatment for colour vision deficiency, there is no particular cure that has been used yet; specifically for a disorder that is inherited. However, in the event that the deficiency was caused by injury, illness or medication, then it is conceivable to improve it. The majority of physicians suggest using specially tinted eyeglasses to improve the person's capability to recognize different shades of colours. For people that are conscious of their deficiency, most of them make an effort to compensate their deficiency along with frequent cues like the fact that trees are green