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Color blindness occurs when there is a problem with the granules (pigments ) that perceive color in certain neurons of the eye, called cones . These cells are found in the retina , the layer of light-sensitive lining the back of the eye tissue.
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<A HREF="http://www.informacionopticas.com/queratocono-sintomas-y-causas/"> Queratocono</A> is a progressive vision condition in which the commonly circular cornea thins in addition to will start to swelling into a cone condition , generating a variation in the brightness that goes in the focus presenting especially distorted see .  
<A HREF="http://www.informacionopticas.com/daltonismo-tipos-e-informacion/"> Daltonismo</A>
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If you only need a pigment , you may have difficulty distinguishing between red and green , which is the most common type of color blindness. If you go to a different pigment , you may have trouble seeing the blue and yellow colors. People with color blindness to the blue and yellow colors usually have problems identify reds and greens .
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The most severe form of color blindness is achromatopsia . The person with this rare condition can not see any color, so all you see in shades of gray. Color blindness is often associated with lazy eye , nystagmus (small , jerky eye movements ), severe photosensitivity and extremely poor vision.
 
  
Most color blindness is due to a genetic problem (see: sex-linked recessive gene ) . Very few women are color-blind and about 1 in 10 men suffer from some form of color blindness.
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It could possibly happens to one particular or possibly both face and also time and again is starting for the period of younger years until age 20 .  
  
The drug hydroxychloroquine (Plaquenil ) , used to treat rheumatoid arthritis and other diseases can also cause blindness.
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Keratoconus Alerts
  
symptoms
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Simply because the cornea becomes better temporary in form , a advanced myopia goes wrong unusual astigmatism alternative concerns establishing a distorted as well as blurred ideas . It may also crop up intensity and even lighting allergy .
Symptoms vary from person to person , but may include:
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[url=http://www.informacionopticas.com/daltonismo-tipos-e-informacion/]Daltonismo[/url]
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Usually , patients experience modifications in their college whenever they hit your focus attention skilled .
Trouble seeing colors and the brightness in the usual way .
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Inability to tell the difference between shades of the same color or similar colors.
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The things that [url=http://www.informacionopticas.com/queratocono-sintomas-y-causas/]queratocono[/url] ?
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Modern groundwork mean that the depletion of the corneal paper that causes keratoconus are because of an disproportion of enzymes within the cornea now there . This disproportion can make the cornea much more subject to oxidative destruction from elements known as free-radicals , provoking it to impair and stick out out .

Revision as of 07:18, 16 January 2014

<A HREF="http://www.informacionopticas.com/queratocono-sintomas-y-causas/&quot;> Queratocono</A> is a progressive vision condition in which the commonly circular cornea thins in addition to will start to swelling into a cone condition , generating a variation in the brightness that goes in the focus presenting especially distorted see .


It could possibly happens to one particular or possibly both face and also time and again is starting for the period of younger years until age 20 .

Keratoconus Alerts

Simply because the cornea becomes better temporary in form , a advanced myopia goes wrong unusual astigmatism alternative concerns establishing a distorted as well as blurred ideas . It may also crop up intensity and even lighting allergy .

Usually , patients experience modifications in their college whenever they hit your focus attention skilled .

The things that [url=http://www.informacionopticas.com/queratocono-sintomas-y-causas/]queratocono[/url] ? Modern groundwork mean that the depletion of the corneal paper that causes keratoconus are because of an disproportion of enzymes within the cornea now there . This disproportion can make the cornea much more subject to oxidative destruction from elements known as free-radicals , provoking it to impair and stick out out .

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