I once created an editor similar to a notepad. It is possible with this editor to write Russian text on a Western Windows without using a Cyrillic keyboard in front of your computer.
This software is equipped with an on-screen Russian keyboard located below the note editor text field. On-screen keyboard keys are displayed in Latin and Cyrillic characters. Cyrillic characters are shown in red and Latin characters are shown in black.
One day, I received an angry email from one of the users of the product.
He wrote
Don’t you know that “so and so” many people have one form or another of color blindness? I cannot read the Russian character on the keyboard. Could you change the color of the letters?
At that time I used a bright red color for the Russian characters and the keys were gray.
Since then, of course, I have changed colors. Now I use a darker red color to represent the Russian letters.
I don’t suffer from this problem myself, but a while ago I was surfing the internet and I came across a great website dealing with color blindness and I remembered the email and the adjustment I had to make to the Russian editor.
There I learned that there are different forms of color blindness.
In fact, the term color blindness is a bit misleading,
Because most people with color blindness don’t see the world in black and white. They can see colors red green colorblind test , but not all colors. Total color blindness is very rare. Color deficiency is a much better term to use.
Different forms of color deficiency affect a large number of people.
Color blindness is largely a gender issue, because it affects men much more often than women.
Here are some facts that I have learned!
About 8% of men have some kind of color deficiency.
For women, this figure is less than 0.5%.
Deuteranope (a form of red / green color deficit)
Protanope (another form of red / green color deficit)
Tritanope (a blue / yellow deficit, very rare)
There are more types of color blindness, but these tests will cover the most common types.
They also offer the same color blind function with add-on software for Photoshop.
Color blindness is not a problem if your website text is blank on a white background.
But, if you mix colored text on a colored background, this can create a problem with your website for many viewers.
It is more common to make mistakes if you mix wrong colors in external images and banners that have text in one color and the background in another, than mix the wrong color with raw text.
Copyright 2004 Per Strandberg
Per Strandberg is a web marketer and software designer.
He Explore Web Niches with the Niche Market Database!
A male has one X and Y chromosome and a female has two X chromosomes.
When a male inherits an affected X, he will be affected because, unlike a female. He does not have an unaffected X to dominate. to the affected X. Because a man always transmits his Y chromosome to his children, he does not transmit CVD to his children; however, he passes the X from him to his daughters, who are then “carriers.” Carriers generally have no symptoms. A woman has a 50 percent chance of transmitting her affected X to each of her children. Females that inherit X will be, like their mothers, carriers; males who inherit affected X, as well as their maternal grandparents, will have CVD. A woman must inherit an affected X from each parent for herself to be affected. (Many grandparents with CVD have one or more grandchildren with the same condition.)
Color vision deficiencies can also be acquired. Aging can cause subtle changes in color vision. The most common color change is due to the development of cataracts, or “cloudy” lenses in the eye. Which interfere with visual acuity and color vision, causing some colors to become opaque, especially blue and yellow. After undergoing cataract surgery in which a foggy lens is removed and replaced with an artificial lens. People often comment that everything looks more colorful.
Older people are also more likely to take medications that can distort or reduce color vision. Blue-yellow color vision can be impaired by certain medications used to control seizures red green color blind test . And other medications used to treat heart conditions and arthritis. Aspirin and quinine can affect red-red color vision, as can some medications used to treat psychosis. In rare cases, color vision can be adversely affected by trauma, such as a blow to the head.
