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Doctor insights on: Blue Yellow Color Blindness Test

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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

Dr. Damien Luviano
50 doctors shared insights

Blindness (Definition)

Vision impairment and blindness are conditions in which a person cannot see well or see at all, even with glasses or contact lenses. If a person's best vision (with correction) out of either eye is only 20/70 - 20/200, he is impaired. If he can see no better than 20/200 or his visual field is no more than 20 degrees (severe "tunnel" vision), ...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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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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Before the color blindness test, how did doctors determine if people were color blind?

Before the color blindness test, how did doctors determine if people were color blind?

They asked them.: Since the color blindness tests have been around for at least a few hundred years, an ancient physician would just have had to ask. ...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 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?

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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How do they test a child for color blindness?

How do they test a child for  color blindness?

Color plates: Your pcp may have a copy of the ishihara plates that are used as a screening test for the various levels of color blindness. I seldom have a request for this screening but find the process helpful. My pcp found a mild issue with my vision with my pre college exam & i keep a copy of the book around to screen kids if asked. If he is old enough to answer questions this can pick it up. ...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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Dr. Lawrence Kale
99 doctors shared insights

Color Blindness (Definition)

Color blindness is 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


Dr. David Chandler
75 doctors shared insights

Color Blind (Definition)

Color differentiation difficulties are where a person has trouble distinguishing the difference between certain colors. One of the most common difficulties involves difficulty telling apart the ...Read more