Posts : 5943 Join date : 2009-07-15 Age : 45 Location : Celina, Tennessee
Subject: Color Blindness Test Sat Jun 26, 2010 8:55 am
I found this online and found it interesting!!
What causes color vision deficiency?
Color deficiency is usually an inherited condition, but disease and injury can also result in color recognition loss.
Usually, color deficiency is an inherited condition caused by a common X-linked recessive gene, which is passed from a mother to her son. But disease or injury damaging the optic nerve or retina can also result in loss of color recognition. Some specific diseases that can cause color deficits are:
* Medications - certain medications such as drugs used to treat heart problems, high blood pressure, infections, nervous disorders and psychological problems can affect color vision.
* Aging - the ability to see colors can gradually lessen with age.
* Chemical Exposure - contact with certain chemicals such as fertilizers and styrene have been known to cause loss of color vision.
In the majority of cases, genetics is the predominate cause for color deficiency. About 8% of Caucasian males are born with some degree of color deficiency. Women are typically just carriers of the color deficient gene, though approximately 0.5% of women have color vision deficiency. When the deficiency is hereditary, the severity generally remains constant throughout life. Inherited color vision deficiency does not lead to additional vision loss or blindness.
450R Heavy Mudder
Posts : 454 Join date : 2009-07-25 Age : 44 Location : TN
Subject: Re: Color Blindness Test Sun Jun 27, 2010 10:49 pm
That is pretty interesting. I am gonna get my little boy to try that as soon as I get back home.
