Learn About Color Blindness

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What is the definition of Color Blindness?

Color blindness is the inability to see some colors in the usual way.

What are the alternative names for Color Blindness?

Color deficiency; Blindness - color

What are the causes of Color Blindness?

Color blindness occurs when there is a problem with the pigments in certain nerve cells of the eye that sense color. These cells are called cones. They are found in the light-sensitive layer of tissue at the back of the eye, called the retina.

If just one pigment is missing, you may have trouble telling the difference between red and green. This is the most common type of color blindness. If a different pigment is missing, you may have trouble seeing blue-yellow colors. People with blue-yellow color blindness often have problems seeing reds and greens, too.

The most severe form of color blindness is achromatopsia. This is a rare condition in which a person cannot see any color, only shades of gray.

Most color blindness is due to a genetic problem. About 1 in 10 men have some form of color blindness. Very few women are color blind.

The drug hydroxychloroquine (Plaquenil) can also cause color blindness. It is used to treat rheumatoid arthritis and other conditions.

What are the symptoms of Color Blindness?

Symptoms vary from person to person, but may include:

  • Trouble seeing colors and the brightness of colors in the usual way
  • Inability to tell the difference between shades of the same or similar colors

Often, symptoms are so mild that people may not know they are color blind. A parent may notice signs of color blindness when a young child is first learning colors.

Rapid, side-to-side eye movements (nystagmus) and other symptoms may occur in severe cases.

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What are the current treatments for Color Blindness?

There is no known treatment. Special contact lenses and glasses may help people with color blindness tell the difference between similar colors.

Who are the top Color Blindness Local Doctors?
Elite
Highly rated in
17
conditions

University Of Tübingen

Institute For Ophthalmic Research 
Tuebingen, BW, DE 

Susanne Kohl is in Tuebingen, Germany. Kohl is rated as an Elite expert by MediFind in the treatment of Color Blindness. She is also highly rated in 17 other conditions, according to our data. Her top areas of expertise are Color Blindness, Cone Dystrophy, Blue Cone Monochromatism, and Cone-Rod Dystrophy.

Elite
Highly rated in
32
conditions

University College London

London, ENG, GB 

Michel Michaelides is in London, United Kingdom. Michaelides is rated as an Elite expert by MediFind in the treatment of Color Blindness. He is also highly rated in 32 other conditions, according to our data. His top areas of expertise are Color Blindness, Late-Onset Retinal Degeneration, Retinitis Pigmentosa, and Retinopathy Pigmentary Mental Retardation.

 
 
 
 
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Elite
Highly rated in
7
conditions

Ludwig Maximilians Universität München

Munich, BY, DE 80336

Stylianos Michalakis is in Munich, Germany. Michalakis is rated as an Elite expert by MediFind in the treatment of Color Blindness. He is also highly rated in 7 other conditions, according to our data. His top areas of expertise are Color Blindness, Late-Onset Retinal Degeneration, Retinitis Pigmentosa, and Retinopathy Pigmentary Mental Retardation.

What is the outlook (prognosis) for Color Blindness?

Color blindness is a lifelong condition. Most people are able to adjust to it.

What are the possible complications of Color Blindness?

People who are colorblind may not be able to get a job that requires the ability to see colors accurately. For example, electricians, painters, and fashion designers need to be able to see colors accurately.

What are the latest Color Blindness Clinical Trials?
Natural History Study of Retinitis Pigmentosa Due to RHO, PDE6a or PDE6b Mutations
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Characterization of the Density of Macular Pigment in Patients With Primary Intestinal Hypocholesterolemia and Its Relation to Their Carotenoid and Anti-oxidant Status.
What are the Latest Advances for Color Blindness?
Burden of ocular morbidities and color blindness among school-attending children in a foothill town of Uttarakhand State.
Implications of inherited color vision deficiency on occupations: A neglected entity!
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Clinically relevant colour album test for the colour defective medical student.
Who are the sources who wrote this article ?

Published Date: June 07, 2021
Published By: Franklin W. Lusby, MD, Ophthalmologist, Lusby Vision Institute, La Jolla, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

What are the references for this article ?

Baldwin AN, Robson AG, Moore AT, Duncan JL. Abnormalities of rod and cone function. In: Schachat AP, Sadda SVR, Hinton DR, Wilkinson CP, Wiedemann P, eds. Ryan's Retina. 6th ed. Philadelphia, PA: Elsevier; 2018:chap 46.

Wiggs JL. Molecular genetics of selected ocular disorders. In: Yanoff M, Duker JS, eds. Ophthalmology. 5th ed. Philadelphia, PA: Elsevier; 2019:chap 1.2.