BEFORE START TEST
Our Color Blind Test, with all Color Blind plate tests, are not performance evaluation tools and are only designed to be taken without glasses and any kind of colored lenses. As a result, please take care of following things BEFORE start the test:
- Remove any glasses with colored lenses if you weared right now. The test is only designed to be taken with the naked eye. It will work only without colored lenses of any type and will lead to accurate results. Taking the online test with color correcting glasses to “prove” that they work is a misconception and inaccurate.
- Increase your screen brightness to high. Dim light affects color & the ability of perceiving differentiation.
What is Color Blindness?
Color blindness is a condition in which the ability to distinguish certain colors is normal. This means that a person suffering from color blindness has trouble seeing red, green, blue, or a combination.
A person's ability to see color is rarely lost (it is called monochromacy). Many people believe that only black and white colors are seen to a person suffering from color blindness. This is a misconception. There are many different types and levels of color blindness.
According to the survey, the prevalence of color blindness is 8% in men and only 0.5% in women.
Types of Color Blindness
There are three types of color blindness occured in the world.
1. Red green color blindness
The most common type of color blindness caused by familial causes is damage or reduced red con or green con pigment function. There are four types of red-green color blindness.
2. Blue yellow color blindness
Blue-yellow color blindness is rarer than red-green color blindness. In this, the blue cone pigment (triton) is either absent or has a limited function. There are two types of blue-yellow color blindness.
3. Full Color Blindness (Monochromacy)
People with full-color blindness (monochromacy) do not see colors, and their clarity of vision can also be affected. There are two types of monochromacy -
How to Test Color Blindness?
There are many ways to test color vision defects but among all of them the ishihara plate test is common method. this will test red-green color blindness. This test most likely used for regular color vision in government jobs, schools or medicals.
The ishihara test includes 38 plates of circles which are created by unique random dots in more than one colors. The place will shown to the person, and asked which number will be seen on plate.
Some of the plates contain info which people with normal color blindness vision can see. On the other side, other plates contain info that only people with color blindness have understand or see.
If person makes some mistakes during test, then they are diagnosed with color blindness. Special plates are used to diagnose color blindness in kids.
Lenses & Glasses for Color Blindness
Optician supply colored specks lenses or a single red-tinted contact lenses to improve vision related to some colours.
Color blindness is result of issues in cone, which causes wavelengths to overlap more, consequently leading to poor color vision.
Color blindness glasses have tinted lenses that help person who having color blindness and give ability to see more colors accurately.
The glasses uses filter to cut that extra overlapping wavelengths, which allow user to give more precise recognition between colors.
Color blind glasses have many more daily life applications, like selecting cloths with perfect patterns of colors. It also help person to grow in their color related profession , such as graphic designing and working profiles that require handling various electrical wiring having lots of colors, depend on correct color perception.