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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 intensifying eye disease by which the routinely long cornea thins and starts out to stick into a cone better shape , resulting a innovation in the sunshine that enters the eye presenting particularly 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 will probably occur in one or else both together face and also generally starts out for the period of teenage life until age 20 .  
  
The drug hydroxychloroquine (Plaquenil ) , used to treat rheumatoid arthritis and other diseases can also cause blindness.
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Keratoconus Warning signs
  
symptoms
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Like the cornea becomes added unpredictable in structure , a progressive myopia is available unusual astigmatism more problems producing a distorted as well as blurred eyesight . This can also manifest glare and thus lights level of responsiveness .
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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Often , patients encounter changes in their diploma they hit your own eyesight attention professional .
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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Different explore suggests that the depreciating of the corneal cells that generates keratoconus is sometimes resulting from an disturbance of the balance of enzymes within the cornea at this time there . This changes may make the cornea much more vulnerable to oxidative destruction from components known as free radicals , provoking it to impair also extend out forward .

Revision as of 06:40, 14 January 2014

<A HREF="http://www.informacionopticas.com/queratocono-sintomas-y-causas/&quot;> Queratocono</A> is a intensifying eye disease by which the routinely long cornea thins and starts out to stick into a cone better shape , resulting a innovation in the sunshine that enters the eye presenting particularly distorted see .


It will probably occur in one or else both together face and also generally starts out for the period of teenage life until age 20 .

Keratoconus Warning signs

Like the cornea becomes added unpredictable in structure , a progressive myopia is available unusual astigmatism more problems producing a distorted as well as blurred eyesight . This can also manifest glare and thus lights level of responsiveness .

Often , patients encounter changes in their diploma they hit your own eyesight attention professional .

The things that [url=http://www.informacionopticas.com/queratocono-sintomas-y-causas/]queratocono[/url] ? Different explore suggests that the depreciating of the corneal cells that generates keratoconus is sometimes resulting from an disturbance of the balance of enzymes within the cornea at this time there . This changes may make the cornea much more vulnerable to oxidative destruction from components known as free radicals , provoking it to impair also extend out forward .

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