Hello steemians !!!
I am back with very new and interesting topic. You might have heard the term COLOR BLINDNESS. If not, then you have opened
the right post. Today its my duty to make you clear about Colorblindness.

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One question that arise in mind is how color blind people see this world?

WHAT IS COLOR BLINDNESS ???

It is a condition in which there is decreased ability to see colors or to differentiate colors. In normal person there is presence of 3 types of cones cell( cell that is responsible for color vision) i.e red sensitive , blue sensitive and green sensitive cell. If there is defect in any of there cell it leads to color blindness.

HOW COLOR BLINDNESS OCCUR ???

color blindness can be either congenital ( inherited) or acquired.
Inherited colorblindness occur due to mutation in X-chromosome. It is more commonly occur in male(3-4%)than in female(0.4%) . it is because male has only one X chromosome so that it can express itself. It is also seen in some congenital diseases. They are:-

1. cone dystrophy
2. cone-rod dystrophy
3. Leber's congenital amaurosis
   

Acquired color blindness is due to any trauma leading to damage to the eye, optic nerve, or parts of the brain. It can also occur due to consumption of certain drugs like drugs Plaquenil.

TYPES OF COLORBLINDNESS

Broadly there are 2 different types of color blindness viz CONGENITAL AND ACQUIRED.

Defect in red – prot
Defect in green-deuter
Defect in blue-trit
These are prefix

Weakness is called Anomaly
Absence is called Anopia
These are suffix.

For eg:- weakness to see green is called deuteranomaly & inability to see green is called deuteranopia.

HOW TO DIAGNOSE COLORBLINDNESS??

Well there are various method to diagnose color blindness. Ishihara Chart is one of them.
for ishihara chart click here

BUT STILL OUR QUESTION IS " HOW COLORBLIND SEE THIS WORLD??"

The answer is here..
1
What do you see in this picture ?? 29 ?? Colorblind will see 70 or nothing.

2.
what do you see in this picture ??57 ?? Color blind will see 35 or nothing
3.NORMAL

TRITANOPIA

4.NORMAL

PROTANOPIA

5.

SOURCE
1.wikipedia.com
2.slideshare.com
3colourblindawareness.org
4.Pictures from google

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That's it for today. I will come with next topic in comming days.
DON'T FORGET TO RESTEEM AND UPVOTE