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Non Hereditary Color Blindness›

Shaken Baby Syndrome: This can cause retina and braindamage and therefore can cause color blindness in infantsand children. The damage is permanent so the e ects willbe carried on into adult life.

› Trauma: Similar to above, accidents and other traumas cancause swelling in the visual processing center of the brain –

the occipital lobe.› ! "amage: Typically caused during childhood where over#

e$posure to ! rays causes degeneration of the retina, thisis the leading cause of blindness in the world however thedamage often only presents itself during a person&s matureyears.

Inherited Color Blindness

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'ach of the cones is carrying one out one of threedi erent photopigments – red, green and blue – and

reacts di erently on colored light sources. (or each of this three types there e$ists a speci)c colorabsorption curve with peaks at di erent points in thecolor spectrum.

*i$ing together the information of those three di erenttypes of cones makes up our color vision.

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+ow, when one type of cones malfunctiones thecolor this cone would normally absorb is altered.

This changes the color perception, resulting in asomewhat- di erent way of perceiving color.

This is what we call colorblindness.

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The "euteran green- and rotan red-ine/ciencies are the most common ones:

› "euteranomaly: malfunctioning green conecommon-

› "euteranopia: missing green cone rare-› rotanomaly: malfunctioning red cone rare-› rotanopia: missing red cone rare-

Blue#type colorblindness is also possible, butvery rare:

› Tritanopia: missing blue cone very rare-› Tritanomaly: malfunctioning blue cone very rare-

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This well#done image tries to depict what a color blind person would seeon a 0shihara 1olor Blindness test

rotanope 2 no red receptors, "euteranope # no green, and Tritanope 2no blue

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body color changes ofpallor, cyanosis, 3aundice,and cherry red

rashes and erythema of skin charts, slides, prints, and

codes test#strips for blood and

urine ophthalmoscopy blood or bile in urine,

faeces, sputum, or vomit

otoscopy

PROBLEM!!!