How to test yourself for color blindness?

Color blindness or otherwise - color blindness, as a rule, hereditary or much less often acquired disease of the organ of vision, which is expressed in violation of the normal perception of color.

According to statistics, most often this disease affects men. To find out if you have this anomaly, you need to conduct special testing. This is of great importance if you have plans to purchase and drive a car.

Classification of colorblind

Contents [Hide]

• 1. Classification of color blindness
• 2. Conditions for carrying out the test for color perception
• 3. Color-blindness test on the tables of Rubkin

The disease can occur both in partial form and in full:

• most frequent case -red immunity or protanopia;
• immunity of blue-violet color - dichromium-tritanopia;
• green immunity - deuterium;

In modern ophthalmology, color blindness( color blindness) and its manifestations are revealed by applying the test with the polychromatic tables of Rabkin.

Tables are original drawings, where points and circles of different color and diameter are represented. In the presence of color blindness, a person can easily distinguish the brightness of color without problems, but the color itself is difficult to characterize. Rabkin's scheme takes into account these features - the brightness of the icons is the same, and the color is different. A person with a deviation in the perception of color will not see the image hidden in a different color in the diagram.

The set of tables consists of two groups:

1. The basic group - tables 1 to 27, are intended for differential diagnosis of forms and degrees of disorders of color vision.
2. Control group - Tables 28 to 48 are intended to clarify the diagnosis.

Conditions for carrying out the color perception test

• The study should be carried out under natural light and the patient's normal well-being.
• The patient should sit with his back to the window, and the one who conducts the test is opposite.
• Polychromatic tables should be presented vertically, on a level with the eyes, withstand a distance of 1 meter.
• To view the picture and the answer is given about 5 - 7 seconds.

Color-blindness test on the tables of Rabkin

Table 1

The table shows the number "96", which is perfectly recognizable as people with the disease color blindness, and people with normal vision. The goal is to visually show the examinee what to do exactly during the test.

Table 2

The table shows the figures - a triangle and a square. They are well seen by healthy people, well recognizing the colors of the spectrum, and people with the disease of color blindness. The goal is to demonstrate the test and identify the simulation.

Table 3

The figure shows the figure "9".If there is an anomaly, a person will recognize the number "5".

Table 4

With normal color perception, a triangle is visible in the table. If there is an anomaly, then the person will see a circle.

Table 5

With normal color perception, the figure "13" is visible in the table. If there is an anomaly, then the person will see the number "6".

Table 6

With normal color perception, two figures are visible in the table: a triangle and a circle. If there is an anomaly, then the person of the figures does not distinguish at all.

Table 7

The figure shows the figure "9".It is perfectly seen by healthy people, well recognizing the colors of the spectrum, and people with the disease of color blindness.

Table 8

The table shows the figure "5".It is perfectly seen by healthy people, well recognizing the colors of the spectrum, and people with the disease of color blindness. However, color-blind figures can hardly be distinguished with difficulty.

Table 9

The table shows the figure "9", which is well seen and people well distinguish the color spectrum, and people are poorly oriented in the green part of the spectrum. If there is an anomaly of perception of the red spectral part, the person will see the figure "8" or "6".

Table 10

With normal color perception, the figure "136" is visible in the table. If there is an anomaly, then the person will see the numbers "66", "68", "69".

Table 11

The table shows the number "14", which is well seen by healthy people, well recognizing the colors of the spectrum, and people with the disease color blindness.

Table 12

The table shows the number "12", which is perfectly seen and people are well aware of the color spectrum, and people are not well-oriented in the green part of the spectrum. People who do not distinguish the red spectrum do not discern these figures at all.

Table 13

The table shows a triangle and a circle that people with normal color perception can perfectly see. People who do not orient themselves in the green part of the spectrum see only the triangle. If there is blindness in the red spectrum, a person sees only a circle.

Table 14

The table shows the digits "3", "0", "6" which are perfectly distinguishable by people with normal color perception. People who do not orient themselves in the green part of the spectrum will see the numbers "1" and "6".If there is blindness in the red spectrum, a person will see the numbers "6", "1" and "0".

Table 15

A healthy person can see the following figures at the top of the table: a circle on the left and a triangle on the right, in some cases a square at the bottom of the table. If there is blindness in the red spectrum, a person sees in the bottom part a square, in the upper part - 2 triangles. People with blindness in the green spectrum see on the top left - a triangle, and below - a square.

Table 16

A healthy person discerns in the table the number "96".If there is blindness in the red spectrum, a person sees only "9".A person who is not oriented in the green part of the spectrum will see only "6".

Table 17

A healthy person can see the following figures in the table: a triangle and a circle. If there is blindness in the red spectrum, a person will only distinguish a triangle in the table. They see only a circle - people are not oriented in the green part of the spectrum.

Table 18

People with normal color perception in the table will see monochrome horizontal and multicolored vertical rows of squares. A person with blindness in the red spectrum will see horizontal rows as one-color and vertically arranged - 3, 5 and 7 also in one color. A person with blindness in the green spectrum will see horizontally arranged rows - multi-colored, and vertical 1, 2, 4, 6 and 8 - in one color.

Table 19

The table shows the figures "2" and "5", which will be perfectly considered by people with healthy eyesight. People with an anomaly of perception of the red or green spectrum will see only "5".

Table 20

People with healthy eyesight will distinguish the following figures in the table: a triangle and a circle. If a person has blindness in the red or green spectrum - he does not discern the figures at all.

Table 21

The table shows the number "96", which distinguishes perfectly both a healthy person and a person with an anomaly of perception of the red spectrum. If the perception of green color is distorted, a person sees only the figure "6".

Table 22

The table shows the figure "5", which he sees as a person with healthy eyesight, as well as a person with a disease of color blindness. However, color-blind this figure is difficult to distinguish.

Table 23

In this table, people with healthy eyesight will see multicolored horizontally arranged rows and monochrome vertically arranged rows. People with colorblindness will see in one color horizontal and in different colors vertical rows.

Table 24

With normal color perception, the figure "2" is visible in the table. If there is an anomaly in the perception of color, then the person will not see the figure.

Table 25

With normal color perception, the figure "2" is visible in the table. If there is an anomaly in the perception of color, then the person will not see the figure.

Table 26

With normal color perception, two figures are visible in the table: a square and a triangle. If there is an anomaly of perception of color, then the person of the figures will not distinguish.

Table 27

With normal color perception, a triangle is visible in the table. If there is an anomaly in the perception of color, then the person sees a circle.

Evaluation of test result:

• With any number of incorrectly recognized tables, one can assume an anomaly of color vision.
• Pay special attention to the fact that calibrating the color of the computer monitor can distort the actual colors. A reliable result and, of course, the diagnosis can only be made by an ophthalmologist.

However, it should be noted that the tables of Rabkin are recognized throughout the world and are the most perfect of all existing tests that determine color blindness. They reliably establish the type and degree of change in color perception.

However, if you have detected an abnormality online, we recommend that you sign up for an appointment with a specialist for the final diagnosis. Be healthy!

Did the article help? Perhaps it will help your friends! Please click on one of the buttons: