Color blindness

Color blindness's disease overview

What is

color blind? What is color blindness?

Color blindness, or more accurately, the color visual defect (color), is a situation where the patient has difficulty distinguishing color, which makes them unable to see one or one or Some colors, or look at some other colors than normal people.

Very rare blinds are disordered with all colors, colors that make it difficult for them to distinguish are often: red, green, blue, or color mixed between these colors. P>The color blindness is often the consequence of a genetic disorder, and has more effects on men than women. The rate of color blindness in boys is 1-2/20.

Color blinds affect the daily activity of the patient, reducing the quality of life.

Causes of Color blindness's disease

The mechanism of color blindness

The cone cell of the eye is a type of cell capable of receiving color. There are 3 types of cone cells corresponding to the ability to identify 3 colors: red, green and blue. When one or more hat cells are structured or functional disorders, the eye will decrease/lose the ability to distinguish colors.

What is the cause of color blindness?

genetic : This is the most common cause of the disease. Therefore, color blindness is also considered as a congenital disease in children. The level of congenital color blindness may be light, medium or heavy.

complications of the disease : glaucoma, macular degeneration; diabetes; Alzheimer's disease, Parkinson; Abnormal diseases of red blood cells, leukemia; ... can cause color blindness.

Drugs : Some drugs to treat cardiovascular disease, hypertension, infection, neuropathy, psychological disorders, erectile dysfunction , ... can cause color distinction disorders

aging : The color of color (color) of the patient decreases with age. Aging can be one of the causes of color blindness in the elderly.

Symptoms of Color blindness's disease

What is

What is color blindness?

Symptoms of color blindness may vary among patients, depending on the degree of the disease. Common symptoms include:

irrespective of one or several colors: may show the following signs:

Use the wrong color when drawing.

Difficult to distinguish colors, especially in low light conditions.

Sensitive to too bright conditions.

It is difficult to read when there are many colors on the same page.

Sore eye pain, headache when looking at the color that children are poorly distinguished.

Sometimes patients only see black, white and gray (rare).

vision disorders can also be encountered in color blind patients.

People at risk for Color blindness's disease

Men: Color blindness is more common in men than women.

Genetic factors: People with parents and grandparents are colored, they are at high risk of carrying genes, and may manifest the symptoms of color blindness. >

Drugs: Some drugs that affect the retina, optic nerves may be the risk of the disease.

Prevention of Color blindness's disease

All children from 3-5 years old, especially boys need eye exams, check the senses periodically with special design tables. Checking at the early stage of school age will help detect abnormalities of visual senses - something that can be annoying for children's learning.

This screening is also necessary for some specific industries such as driving, ..

Diagnostic measures for Color blindness's disease

Testing for the ability to distinguish colors: the patient looks at the board with dots, and is required to find red dots.

Similar color arrangement test: The patient is required to arrange colors in the same sense.

Color blindness's disease treatments

color blindness can be cured?

Currently, there is no measure that can cure completely color blindness.

Colored blind children need to be notified to teachers about the difficulties that children encounter in distinguishing colors, to be supported at school.

color blindness due to the use of drugs or complications of a background disease that can be improved when stopping the drug or treating the whole disease.

Color filter glass: This is a new type of glass developed by scientists with the feature of increasing contrast between the colors that patients are indistinguishable. However, it should be noted that this glass only has the effect of treating symptoms, not color blindness.

It is important that the color blind person needs to learn to live with this poorly distinctive situation.

Remember the order of traffic lights can help patients comply with the law when participating in traffic in a state of indistinguishable colors.

Smartphone applications can be helpful to help the colored blind recognize colors.

See also:

Screening and diagnosis of genetic disorders

vision impairment: Things to know

Song: Causes, symptoms, diagnosis and treatment

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