What is color blindness?
Color blindness is a kind of disease. If this disease happens to any person, then he won’t be able to differentiate between few colors, so we can’t say that it’s as dangerous as a cataract. But it can disturb your daily life.
In most cases, mostly male is affected by color blindness as compared to female.
Types of Color Blindness
There are three types of color Blindness, Which are following:
- Red-green color blindness
- Blue-yellow color blindness
- Full-Color Blindness (Monochromacy)
Symptoms of color blindness
Although, the symptoms of color blindness are often such that it becomes difficult to notice. But whenever you have difficulty in making a difference between colors, then you can understand that you have color blindness, although often you do not even know about this disease.
However, people with this disease may have other symptoms in some cases.
- Quick eye twitching
- Difficult to differentiate between blue and yellow
- Difficult to differentiate between red and green
Acquired and Inherited Color Blindness
Inherited color blindness
Inherited color blindness is very common. And It occurs due to your genetic defect. This means this condition passes down through your family background. For example, if any of your family members is colorblind then more you’re more likely to have this disease.
Acquired color blindness
This color blindness may develop later in life and it affects men and women equally.
Diseases that damage your optic nerve or the retina of the eye can cause acquired color blindness. Therefore, you should always alert your doctor, and if your color vision has got changes. So it might indicate a more serious underlying issue.
What causes color blindness?
The eye contains nerve cells which know as “cones” and cones enable the retina, and there’s a light-sensitive layer of tissue in the back of your eyes that allows you to see colors.
Three different types of cones absorb various wavelengths of light, and each cone reacts to either red, green, or blue. And these cones send information to your brain to differentiate colors.
If any of these cones in your retina is damaged or not present, so undoubtedly you’ll have difficulty seeing colors.
Most of the time, color vision deficiency is inherited. Send this typically passes from the mother to her child. Well Inherited blindness won’t cause blindness or vision loss.
You can have color Blindness due to any disease or injury to your retina.
With glaucoma, the internal pressure of your eye, or your intraocular pressure, is too high. This pressure damages your optic nerve, and that carries signals from your eyes to your brain because of that you’re able to see. So, therefore, you may have difficulty distinguishing colors.
According to Visual Science, and, journal Investigative Ophthalmology, the inability of a person with glaucoma to blue and yellow has been noted since the 19th century.
Macular degeneration and diabetic retinopathy cause damage to your retina, and cones are located there. So it may cause color blindness.
If you’re affected by a cataract, in which your lens gradually changes from transparent to opaque. So Your color vision may be dim as a result.
Diseases that affect this problem
- Multiple sclerosis
Well, to see any colors is subjective. But It quite impossible to know whether you see reds, greens, yellow, and other colors in the same way as normal people with perfect vision. However, your eye specialist can test for this condition during a normal eye test.
In the eye test, special images will be include, known as called Pseudoisochromatic plates. And these images are made of different colored dots that have any numbers or symbols embedded within an image. And people with normal vision can see these numbers and symbols but not colorblind.
Children need to be tested before they join the school because many early childhood educational materials involve identifying colors.
Color blindness Treatment
Well, there are no specific treatments for most types of color vision difficulties, unless your vision problem is related to the use of certain medicines or eye conditions. Discontinuing the medication may cause the vision problem or treat the underlying eye disease can result in better color vision.
You can wear a colored filter over eyeglasses or a colored contact lens maybe enhance your perception of contrast between colors. But remember that such lenses cannot improve your ability to see all colors.