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Doctor insights on: Blue Yellow Color Blind Test

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Whats ishihara color blindness test?

Whats ishihara color blindness test?

Color plates: The ishihara test plates are a series of dots of various colors with an embedded number or symbol which cannot be easily seen by the color deficient due to color confusion. They are the most commonly available test in ophthalmologists office although others are also available and some are better at separating the forms of color deficiency out. Ishihara is a good screening test. ...Read more

Dr. David Chandler
77 doctors shared insights

Color Blind (Definition)

Ophthalmologist prefer to use the term color deficit as blindness conveys other meanings. Lowered color perception can be inherited (many forms), can result from advanced loss of retinal cells, inherited retinal disease, and some forms occur due to CNS injury. There are excellent tests for the various types and they can be functionally ...Read more


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How do you pass a color blindness test?

How do you pass a color blindness test?

Color blindness: You either look an images or put a set of colors in order. ...Read more

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What are the tests involved for color blindness?

Color plates: The most commonly available test is the ishihara color recognition plates which present numbers buried in dots of color over the axis of color confusion for the deficient. This can tell severe from mild color deficiency. Other tests are availbale to tell which type of color deficiency you have. This does have some occupational significance. ...Read more

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Are there any good online color blindness tests?

Are there any good online color blindness tests?

Try this one: http://www.youtube.com/watch?v=cwyrp3hu4ke then go to your eye doctor. Patients can fail this test due to refractive error problems (need glasses), corneal problems, optic nerve problems, and cataracts. ...Read more

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Do you know of tests for being a carrier of color blindness?

Do you know of tests for being a carrier of color blindness?

No: The easiest way is to ask your father. If he is color-blind then you are a carrier. Then ask your mother's father, if he is color-blind, then you have a 50% chance of being a carrier. If neither are color-blind, you cannot be a carrier. ...Read more

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Please describe the most accurate and comprehensive color blindness test?

It is: The anomaloscope which is a rarely used research instrument. The farnsworth 100 test is accurate and comprehensive but rarely used because the time it takes to do it and the extreme difficulty of the test. ...Read more

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I see blue instead of grey and purple instead of brown. Is this being color blind?

Not likely: Most color blind people have trouble with reds and greens. If you had blue-yellow colorblindness (rare), you would see gray instead of blue. You likely just perceive colors a little different than someone else. Colorblind people cannot distinguish certain colors at all. For example, they see no difference between green and brown. ...Read more

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What is the most accurate and comprehensive color blindness test available nowadays?

What is the most accurate and comprehensive color blindness test available nowadays?

Anomaloscope: The anomaloscope is the most complete and compreshensive way to test color vision. The farnsworth 100 test is the next in line. ...Read more

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Is there a type of color blindness where a person has trouble distinguishing shades of blue?

Is there a type of color blindness where a person has trouble distinguishing shades of blue?

Yes: There are two situations in which the blue sensitive cones do not work properly dichromacy is the most severe with complete loss of blue perception. Tritanopia (blue deficient: s cone absent) anomalous trichromacy tritanomaly (blue deficient: s cone defect) the most common color deficiency is red–green (overall) 7 to 10% of the male population. ...Read more

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What is a color blind test?

What is a color blind test?

Testing device: These are a group of color vision recognition and confusion plates, discs and lights to determine the degree and type of color deficiency that is present in a test subject. Some are standard in ophthalmologists office and others are in laboratories. And some are available on line for anyone to test themselves. ...Read more

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Could you see the 2 in this color blind test?

If color normal: The tests are designed with little dots that are shaded along the axes of confusion for the color deficient. A color normal will see the indicated symbol or number while the deficient will miss it. ...Read more

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Is there a color blind condition where one could only see blue and purple?

Color blindness: Color blindness and the related visual perceptions vary significantly. I would recommend seeing an eye doctor and performing the ishiahara color plates and farnsworth testing to determine your exact deficit. ...Read more

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I have color blind and wearing spexes also, will i pass the medical test..No blood desease?

I have color blind and wearing spexes also, will i pass the medical test..No blood desease?

Depends: There is no relationship between ordinary color deficiency and acuity or the need for spectacles. Color blindness is not tested for instance on obtaining a driver's license. Some occupations do require this testing and if you are color deficient, you likely will fail that. There is no correlation with blood diseases or other systemic diseases. Most medical tests are not color dependent. ...Read more

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How can color blindness affect the way an individual looks at a color blind test?

Color confusion: The tests are designed usually with dots of color along the axis which a color deficient person might confuse them. So by lacking the ability to pick out certain colors, the number or figure will not stand out from the background of dots and so will not be recognized. Some tests are sophisticated enough to indicate which type of color blindness is present. ...Read more

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How does color blindness affect the way an individual looks during a color blind test?

Loss of color vision: In the retina of your eye, there are rods (for seeing in the dark) and cones (for seeing color and fine detail). There are three types of cones, similar to the three primary colors, and the color blindness test checks subtle differences between shades to see if you are missing cones of one of the color types (usually red or green). But usually you are not aware of any problem seeing things. ...Read more

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I took ishihara plate test on internet and it shows that I have red color blind (protanopia). What can cause it, and what can be done about it?

I took ishihara plate test on internet and it shows that I have red color blind (protanopia). What can cause it, and what can be done about it?

Genetics: Color vision is controlled by a gene on the x-chromosome. Females xx and males xy, making males more likely to be color blind. Of the different types, red/green is the most common, with red being a sub-type of this. You should see an ophthalmologist for an evaluation. If you are just now discovering this, it seems like you are pretty well adapted to your situation. ...Read more

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What's a good test to determine the level one is color blind?

What's a good test to determine the level one is color blind?

Color plates: Standardized testing of color vision can be performed by your eye doctor using specific color plates. Blue-green blindness is very common and usually easy to over come. Many people lead normal lives and never realize that they are color blind. Specific forms may cause more problems. A thorough evaluation by your eye doctor can determine the specific type and offer suggestions about management. ...Read more

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What tests can I take to figure out if I am color blind online?

Several sites: If you search color blind test, you will find several sites you may be able to use. In any event, you should not rely on these tests alone to make the diagnosis, but should see an optometrist or opthalmologist. ...Read more

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Dr. Lawrence Kale
101 doctors shared insights

Color Blindness (Definition)

A condition where an individual has a decreased ability or complete inability to detect differences between various colors. For example, red-green color blindness is the inability to distinguish between ...Read more