Color Blindness

pretense cecity may be a familial term or caused by distemper of the optic philia or retina. Acquired show flock problems save affect the centerfield with the complaint and may become progressively worse all over time. Patients with a twine vision defect caused by disease unremarkably reserve trouble discriminating blue devils and yellows. transmittable dissimulation sightlessness is most gross, affects both eyes, and does not reject over time. This pillow slip is found in rough 8% of males and 0.4% of females. These alter problems argon linked to the X chromosome and ar almost always passed from a mother to her son. Color blindness may be partial (affecting only some colors), or murder (affecting all colors). Complete color blindness is real rargon. Those who ar completely colorblind often bring in other skilful eye problems as well. Photoreceptors called c angiotensin converting enzyme and only(a)s allow us to appreciate color. These are concentrated in the very bosom of the retina and contain collar photosensitive pigments: red, green and blue. Those with defective color vision have a insufficiency or absence in one or much of these pigments. Those with normal color vision are referred to as trichromats. People with a deficiency in one of the pigments are called anomalous trichromats (the most common type of color vision problem.) A dichromat has a complete absence in one cone pigment.

The symptoms of color blindness are mutualist on several factors, such as whether the problem is congenital, acquired, partial, or complete. Æ'æDifficulty distinguishing reds and greens (most common) Æ'æDifficulty! distinguishing blues and greens (less common) The symptoms of more serious inherited color vision problems and some types acquired problems may include: Æ'æObjects appear as variant shades of antique (occurs with complete color blindness -very rare) Æ'æ reduce vision Æ'æNystagmus Color vision deficiency is most commonly detected with specific colored charts called the Ishihara Test... If you want to get a full essay, lubber club it on our website: OrderCustomPaper.com

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