5 Types of Tests & Types of Color Blindness, Which One Are You?
Do you have trouble identifying the colors in the picture above? If yes, it looks like you have color blindness syndrome. So, what is color blindness? What causes color blindness? How do you test for color blindness to determine the level of color blindness experienced?
Apart from partial color blindness, it is total color blindness. Total color blindness can not even see colors at all, in the sense that all objects seen by the eye are monochrome. This condition is of course very disturbing, right?
In addition, the causes of color blindness can be from a number of types of diseases that have nothing to do with eye function, such as:
The color test for the eye is divided into several types, based on the patient's needs. There are partial and total color blindness tests. Here are the types of color blind tests you need to know.
1. Anomaloscope
Anomaloscope is a color blindness test method that is performed using a microscope-like device.
When undergoing an anomaloscope color blind test , the patient will be asked to look at the circle which is divided into 2 (two) colors, namely red-green on one side, and yellow on the other side. After that, the patient is required to press the button on the tool when all the colors in the circle turn into the same color.
An anomaloscope color test is included in the type of partial color blind test. Unfortunately, this test is only capable of detecting red-green partial color blindness.
2. Ishihara
The Ishihara Color Blind Test is the most commonly used color test for the eye. In this method, the patient will be faced with a circle image that consists of many spots with different colors and shapes from each other. The patient is asked to look at the picture while closing one eye, and between the eyes and the image is approximately 40 centimeters.
When viewed carefully, these spots form a letter or number. If the patient's eyes are normal, he will easily identify the hidden letters or numbers.
Just like an anomaloscope, this color test can only diagnose red-green partial color blindness.
3. Farnsworth-Munsell
To analyze whether patients can realize a very thin color change, the color blind test method used is the Farnsworth-Munsell test. This test uses a large number of circular image mediums, and a number of gradations of that color.
4. Compilation
As the name implies, this method of preparation is done by asking patients to arrange certain objects in which the object consists of a composition of color gradations. For example, patients must arrange several beams consisting of light green-dark green.
5. Cambridge
The implementation of this Cambridge color test is similar to that of the Ishihara, which is to ask patients to identify hidden letters inside a circle full of different color spots.
The difference is that this test uses a computer medium instead of card paper. In addition, usually the Cambridge test only focuses on one type of letter, namely the letter "C".
Partial color blindness is divided into several categories, depending on what type of color the person cannot identify.
Tritanopia
The partial color blindness of tritanopia is the inability of the sufferer to distinguish between blue and yellow. Blue is considered green, while yellow looks like light gray. This color blindness is rare.
Tritanomali
If you see the blue color becoming somewhat green, or pink becoming red and yellow, then you are sure to have tritanomali color blindness . Just like tritanopia , this tritanomali is quite rare.
Deuteranopia
Deutoranopia is a spatial color blindness that causes sufferers to identify red as brownish yellow, and green as cream.
Deuteranomali
For deuteranomali, sufferers often have difficulty distinguishing between purple and blue. Also, incorrectly identifying the colors yellow and green to red.
Protanomali
Meanwhile, protanomali is partial color blindness in which patients see red, yellow, and orange as green and not as bright as the original.
Protanopia
The last type of partial color blindness is protanopia . In this condition, the patient will see the color green and orange as yellow, while the red will turn black.
Thus information about color blindness and color blindness tests can be done. When you feel you have symptoms of color blindness, don't hesitate to see a doctor to find out if your color blindness is dangerous or not. May be useful!
What Is Color Blindness?
Color blindness is a visual impairment. In patients with color blindness, the eye is not able to recognize colors that are seen clearly and accurately. As a result, they find it difficult to distinguish between a number of colors, such as red and orange, or blue and purple. Such color blindness is called partial color blindness.Apart from partial color blindness, it is total color blindness. Total color blindness can not even see colors at all, in the sense that all objects seen by the eye are monochrome. This condition is of course very disturbing, right?
Causes of Color Blindness
Color blindness is generally caused by genetic factors. Someone who has color blind parents is also likely to experience impaired eye function. In addition, color blindness can also be triggered by a number of factors. Some factors that cause color blindness include:- Damage to the optic nerve occurs
- Exposed to exposure to chemicals
- Aging
- Cataracts
- The part of the brain responsible for recognizing colors is damaged
In addition, the causes of color blindness can be from a number of types of diseases that have nothing to do with eye function, such as:
- Multiple sclerosis
- Glaucoma
- Diabetes
5 Kinds of Color Blind Tests for Knowing Color Blind Types
To determine whether your eyes are color blind or not, a color blindness test is necessary. In addition to treating eye dysfunction, this test is usually one of the conditions for a number of specialized occupational fields, such as pilots, soldiers, technicians, and doctors.The color test for the eye is divided into several types, based on the patient's needs. There are partial and total color blindness tests. Here are the types of color blind tests you need to know.
1. Anomaloscope
Anomaloscope is a color blindness test method that is performed using a microscope-like device.
When undergoing an anomaloscope color blind test , the patient will be asked to look at the circle which is divided into 2 (two) colors, namely red-green on one side, and yellow on the other side. After that, the patient is required to press the button on the tool when all the colors in the circle turn into the same color.
An anomaloscope color test is included in the type of partial color blind test. Unfortunately, this test is only capable of detecting red-green partial color blindness.
2. Ishihara
The Ishihara Color Blind Test is the most commonly used color test for the eye. In this method, the patient will be faced with a circle image that consists of many spots with different colors and shapes from each other. The patient is asked to look at the picture while closing one eye, and between the eyes and the image is approximately 40 centimeters.
When viewed carefully, these spots form a letter or number. If the patient's eyes are normal, he will easily identify the hidden letters or numbers.
Just like an anomaloscope, this color test can only diagnose red-green partial color blindness.
3. Farnsworth-Munsell
To analyze whether patients can realize a very thin color change, the color blind test method used is the Farnsworth-Munsell test. This test uses a large number of circular image mediums, and a number of gradations of that color.
4. Compilation
As the name implies, this method of preparation is done by asking patients to arrange certain objects in which the object consists of a composition of color gradations. For example, patients must arrange several beams consisting of light green-dark green.
5. Cambridge
The implementation of this Cambridge color test is similar to that of the Ishihara, which is to ask patients to identify hidden letters inside a circle full of different color spots.
The difference is that this test uses a computer medium instead of card paper. In addition, usually the Cambridge test only focuses on one type of letter, namely the letter "C".
Types of Color Blindness
Broadly speaking, color blindness in the eye is divided into 2 (two) types, namely total color blindness and partial color blindness.1. Total Color Blind
Total color blindness is a type of color blindness that causes sufferers to be unable to identify the color seen by their sense of vision. All views appear black and white (monochrome).2. Partial Color Blind
Meanwhile, partial color blindness is a condition in which the sufferer's eyes cannot accurately identify certain colors. Simply put, this type of color blindness is called partial color blindness.Partial color blindness is divided into several categories, depending on what type of color the person cannot identify.
Tritanopia
The partial color blindness of tritanopia is the inability of the sufferer to distinguish between blue and yellow. Blue is considered green, while yellow looks like light gray. This color blindness is rare.
Tritanomali
If you see the blue color becoming somewhat green, or pink becoming red and yellow, then you are sure to have tritanomali color blindness . Just like tritanopia , this tritanomali is quite rare.
Deuteranopia
Deutoranopia is a spatial color blindness that causes sufferers to identify red as brownish yellow, and green as cream.
Deuteranomali
For deuteranomali, sufferers often have difficulty distinguishing between purple and blue. Also, incorrectly identifying the colors yellow and green to red.
Protanomali
Meanwhile, protanomali is partial color blindness in which patients see red, yellow, and orange as green and not as bright as the original.
Protanopia
The last type of partial color blindness is protanopia . In this condition, the patient will see the color green and orange as yellow, while the red will turn black.
Thus information about color blindness and color blindness tests can be done. When you feel you have symptoms of color blindness, don't hesitate to see a doctor to find out if your color blindness is dangerous or not. May be useful!
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