1. SimpleSt
COlOR BliNDNeSS teSt
Web based research work
Color blindness

2. Color blindness is a disease of decreasing the ability to see colors or even
sometimes a color blind people becomes totally disable to see colors and thus
cannot differentiate between colors. It creates a lot of problems in day to day
life. Even in using internet it creates disturbance.
The primary colors green, red and blue cannot be seen by a color blind people.
Another type of color blinds see only a few color shades where normal people
can see more than thousands of color shades. Some others can see a few colors
as an instance, he may be able to see red but cannot see green, cannot
differentiate between red and green. Others are the mostly terrific; they can see
the whole world as gray, black or white.
Color blindness is also known as color deficiency problem or color vision
problem. The main reason behind this problem is genetic or inherited issues.
Sometimes aging, glaucoma, cataracts and diabetics are found responsible for
color deficiency.
Am I a color blind or not??
It is very important to know this answer for one’s personal wellbeing as color
vision plays a vital role. There are several tests to detect color deficiency.
#Card testing
One can easily detect his color blindness or color deficiency by testing through
some cards containing dots, squares, triangles, stars, various shapes and many
objects where the normal paper pattern should be one type basically in dots of
same color and those specific object will be highlighted with different at least
one color. Color blinds cannot differentiate between the cards and cannot detect
the special objects or shapes drawn on the cards. This is a simple test to check
whether you are color blind or not. In fact this process is one of the most
conventional procedures to check out vision deficiency

3. Can you see the green dots all over the paper? Are these enough? Don’t you see
a star, a circle and a square shapes containing orange outlines?
Well, man possessing correct color vision will be able to see green dots all over
the paper, and also above mentioned three different shapes. So you are thinking
about what will be the condition of color blinds while he is seeing this! Actually
color blind people can see the same as a normal one is seeing. So this card will
be seen by everyone having defect or without vision defect in the same way.
A color normal person can see a yellow circle and a faint brown square. On the
other hand color blind people can see only the yellow circle.

4. What do you see on this card? Are your answers nothing or just green dots all
over the paper? Then it is a matter of vision deficiency or probably you have not
look through carefully. Here exists a faint brown boat also.
This card checking includes simple online color blindness tests and is not
diagnosis based. A highly color vision normal people can check out the
differences of each card within 3 seconds.
#Color confusion test
Here are three options and the correct color exists among the options. Color

5. Blind individuals become confused to choice the right color and maximum
times fail. This is known as color confusion test. For Tritanopia blindness1
one
ca not differentiate between three choices and supposed that he cannot
remember the name of that color. Deuternopia2
blind individuals can distinguish
between three colors but cannot answer properly or just by guessing.Protanopia3
blinds report that light adjustment make for them almost impossible to match
correct color.
#web based color vision test
The test is a movie based which consists of pictures. In each picture there is a
square, which might be hidden if you are suffering from some type of color
blindness. Here is a sample picture:
In this picture, the color blind will see several white or transparent boxes.
Different severities of color blindness are detected by this test. If the square is
not visible to you for only a few seconds, there is a big chance that you are
suffering some type of color vision deficiency. It’s the simplest color blindness
test, covering a big range of deficiencies. You only have to watch and see, if
you always can spot the square.
1 a very rare blue-yellow color blindness.
2 lack medium-wavelength.
3 lack the ability to distinguish between colors in the green-yellow-red section of the spectrum.

6. #Ishihara test
Ishihara test is mainly to detect mainly red-green color blindness. This is the
most common and widely renowned test for the detection of color deficiency.
Dr. Shinobu Ishihara was the inventor of this test. In this test there are several
plates containing dots and in each plate there exists numbers or spiral lines or
connector shapes in different colors. Color blind individuals cannot detect the
differences and even normal people even find difficulties to pass the test
properly. Generally 38 Ishihara plates are used to go through this test. Here are
some of these:
Number on Ishihara plates
Spirals on Ishihara plates

7. #Rainbow testing
It is familiar to all that a rainbow consists of 7 colors. But a rainbow colors
cannot be seen by everyone. The color blinds see it differently.
Normal man’s view Protanopia Deuteranopia Tritanopia
view view view
#Grid style vision test
This test is based on mainly two colors and in between them there will be a
white grid. Those who are color blind cannot detect the objects. This test is even
taken as multiple choice questions where apart with the best answer several
wrong answers are given and color blinds cannot see the objects or colors
properly and choose wrong answers by guessing only.
These were a few color blindness tests which are the most common internet
based tests.