Detecting color blindness in children

Le daltonisme est une condition héréditaire qui affecte la reconnaissance des couleurs. Elle peut impacter la vie quotidienne d’un enfant s’il n’est pas détecté tôt.

Voici un guide proposé par COP9 sur la manière de dépister le daltonisme chez l’enfant.

Detecting color blindness in children:

understanding color blindness

Color blindness, also known as dyschromatopsia, is a visual impairment that affects color perception in individuals.


It does not impact the child’s visual acuity: color blindness is not part of the vision disorders which are myopia, hyperopia, astigmatism and presbyopia.


This anomaly is often hereditary and is characterized by an alteration of pigments in the photoreceptors of the retina.


The color blind sees color differently, because the capture of wavelengths by their cones and rods will be deficient.

People with color blindness have difficulty distinguishing certain shades of color, such as green and red, or blue and yellow. They might also see colors in shades of gray, or other colors.

Detecting color blindness in children: signs and symptoms

To detect color blindness in children, it is first necessary to carry out a pediatric examination if your child has:

  • difficulty distinguishing primary colors (red, green, blue);
  • confusion between similar colors;
  • an inability to recognize colored traffic signals;
  • difficulty completing coloring activities or color-based games.


A pediatrician can perform color blindness screening tests during routine visits. These tests may include color cards and pictures to assess the child’s color perception.

If signs of color blindness are observed, your child will be referred to a specialist, specifically a pediatric ophthalmologist, such as Dr. Stephanie Zwillinger, for further testing.

Methods for

detecting color blindness in children

Detecting color blindness in children is essential to detect any visual problems from an early age. 


Early identification of dyschromatopsia allows adequate treatment to help the child live better with this visual deficiency.


There are different methods of detecting color blindness in children. 


One of the most common ways is to perform color vision tests. These tests consist of presenting the child with colored images and asking them to identify the colors they see.


Ishihara cards, which include numbers made up of dots of different colors, are often used to assess color perception.


Another screening tool for color blindness in children is an eye exam. The ophthalmologist can perform a thorough examination of the eye, including the retina, optic nerve, lens and cornea, to detect any ocular abnormalities that may be causing the vision problem.

Who should be consulted to detect color blindness in children?

Detecting color blindness in children can be done by consulting an ophthalmologist specializing in pediatrics. This vision health professional can perform more specific tests to evaluate color vision and detect any visual defects in the child.

It is crucial to detect color blindness in children from an early age to provide appropriate and early treatment.

By identifying and correcting vision problems early, it is possible to improve the child’s quality of life and enable them to better adapt to their visual environment.

Do not hesitate to consult a specialist if you have any doubts about your child’s vision!

In conclusion

Screening children for color blindness is essential for their well-being and adaptation to their environment.


By recognizing early signs and performing regular screening tests, parents and healthcare professionals can ensure a safer and more rewarding future for children with color blindness.

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