51 facts on colour blindness
#01. 99% of all colourblind people are not really colour blind but colour deficient; the term colour blindness is misleading.
#02. Red-green colour blindness is a combination of red-blindness (protan defects) and green-blindness (deutan defects).
#03. Colour blindness is more prevalent among males than females, because the most common form of colour vision deficiency is encoded on the X sex chromosome.
#04. “What colour is this?” is the most annoying question you can ask your colourblind friend.
#05. There are three main types of colour vision deficiency: protan, deutan, and tritan defects.
#06. Strongly colourblind people might only be able to tell about 20 hues apart from each other, with normal colour vision this number raises to more than 100 different hues.
#07. Coloured lenses or glasses can improve colour discrimination in your problem areas but can not give you back normal colour vision.
#08. Ishihara plates are the best known colour blindness tests, but they are not the most accurate ones.
#09. About 8% of all men are suffering from colour blindness.
#10. Severity of colour blindness is usually divided into the following four categories: slightly, moderate, strong, and absolute.
#11. The terms protan, deutan, and tritan are Greek and translate to first, second, and third.
#12. A father can’t pass his red-green colour blindness on to his sons.
#13. Dogs are not colourblind.
#14. Colour vision deficiency would be a much better term; but it is not as easy to pronounce compared to colour blindness.
#15. There are people which are really suffering from complete colour blindness, which is called achromatopsia or monochromacy.
#16. Blue-yellow colour blindness would be better called blue-green colour blindness, as this are more the problem colours.
#17. There exists every nuance of colour vision deficiency severity, starting from almost normal colour vision up to complete colour blindness.
#18. Protanopia, deuteranopia, and tritanopia are types of dichromacy, which means you have only two different colour receptors (cones) compared to three with normal colour vision.
#19. If a woman is red-green colourblind, all her sons will also be colourblind.
#20. Colourblind people feel handicapped in everyday life, and almost nobody recognizes this.
#21. 99% of all colourblind people are suffering from red-green colour blindness.
#22. When using colour correcting lenses you are wearing two differently coloured lenses in your eyes.
#23, Red-green colour blindness is a recessive sex linked trait, which causes more men to be colourblind than women.
#24, John Dalton wrote the first known scientific paper regarding colour blindness.
#25, Protanomaly, deuteranomaly, and tritanomaly are types of anomalous trichromacy, which means you have three different colour receptors (cones) like people with normal colour vision but one of them is shifted in its peak.
#26, In certain countries you need normal colour vision to get a drivers license.
#27. Deuteranomaly—one form of red-green colour blindness—is by far the most common form of colour blindness.
#28. More women than men are carriers of colour blindness, even though they are not colourblind themselves.
#29. Some people get rejected from a job assignment because of their colour vision deficiency.
#30. About 0.5% of all women are suffering from colour blindness.
#31. Blue-yellow colour blindness is a dominant not sex linked trait, which means both men and women are equally affected.
#32. Red-green colour blindness doesn’t mean that you are only mixing up red and green colours, but the whole colour spectrum can cause you problems.
#33. The anomaloscope is the most accurate colour blindness test known today.
#34. Police officer, firefighter, and airline pilot are the most famous jobs which require normal colour vision.
#35. There is no treatment or cure for colour blindness.
#36. Pseudoisochromatic plates were introduced by Professor J. Stilling of Strassburg in 1883; the Ishihara plates by Dr. Shinobu Ishihara followed almost half a century later.
#37. Different chromosomes are involved as sources for the different types of colour vision deficiency.
#38. Women can also suffer from colour vision deficiency.
#39. Monochromacy—also called achromatopsia—means you have only one type of colour receptors (cones) in your eyes.
#40. Colour blindness is also called Daltonism, after the scientist John Dalton.
#41. The most often used types of colour blindness tests are: pseudoisochromatic plates, arrangement test, and the anomaloscope.
#42. Better colour vision deficiency terms would be: red-blindness for protanopia, red-weakness for protanomaly, green-blindness for deuteranopia, green-weakness for deuteranomaly, blue-blindness for tritanopia, and blue-weakness for tritanomaly.
#43. John Dalton believed his whole life that the cause of his colour blindness is a coloured fluid inside his eye balls.
#44. Many colourblind people have problems with matching clothes and buying ripe bananas.
#45. Quite a lot of people with normal colour vision can’t pass an Ishihara plates test free of errors.
#46. The International Colour Vision Society is scientifically investigating every aspect of colour vision and colour vision deficiency.
#47. Confusion lines of the CIE 1931 colour space show exactly the colours of confusion for all forms of colour blindness.
#48. Only a whole battery of colour blindness tests can reveal the true type and severity of your colour vision deficiency.
#49. John Dalton was also colourblind himself.
#50. A Colblindor is a colourblind person who learned to enjoy his colourblind life ;-)
#51. Bulls are colour blind (monochromacy, AKA full colour blindness). They get mad because the matadors are teasing them, not because of the colour red.
#02. Red-green colour blindness is a combination of red-blindness (protan defects) and green-blindness (deutan defects).
#03. Colour blindness is more prevalent among males than females, because the most common form of colour vision deficiency is encoded on the X sex chromosome.
#04. “What colour is this?” is the most annoying question you can ask your colourblind friend.
#05. There are three main types of colour vision deficiency: protan, deutan, and tritan defects.
#06. Strongly colourblind people might only be able to tell about 20 hues apart from each other, with normal colour vision this number raises to more than 100 different hues.
#07. Coloured lenses or glasses can improve colour discrimination in your problem areas but can not give you back normal colour vision.
#08. Ishihara plates are the best known colour blindness tests, but they are not the most accurate ones.
#09. About 8% of all men are suffering from colour blindness.
#10. Severity of colour blindness is usually divided into the following four categories: slightly, moderate, strong, and absolute.
#11. The terms protan, deutan, and tritan are Greek and translate to first, second, and third.
#12. A father can’t pass his red-green colour blindness on to his sons.
#13. Dogs are not colourblind.
#14. Colour vision deficiency would be a much better term; but it is not as easy to pronounce compared to colour blindness.
#15. There are people which are really suffering from complete colour blindness, which is called achromatopsia or monochromacy.
#16. Blue-yellow colour blindness would be better called blue-green colour blindness, as this are more the problem colours.
#17. There exists every nuance of colour vision deficiency severity, starting from almost normal colour vision up to complete colour blindness.
#18. Protanopia, deuteranopia, and tritanopia are types of dichromacy, which means you have only two different colour receptors (cones) compared to three with normal colour vision.
#19. If a woman is red-green colourblind, all her sons will also be colourblind.
#20. Colourblind people feel handicapped in everyday life, and almost nobody recognizes this.
#21. 99% of all colourblind people are suffering from red-green colour blindness.
#22. When using colour correcting lenses you are wearing two differently coloured lenses in your eyes.
#23, Red-green colour blindness is a recessive sex linked trait, which causes more men to be colourblind than women.
#24, John Dalton wrote the first known scientific paper regarding colour blindness.
#25, Protanomaly, deuteranomaly, and tritanomaly are types of anomalous trichromacy, which means you have three different colour receptors (cones) like people with normal colour vision but one of them is shifted in its peak.
#26, In certain countries you need normal colour vision to get a drivers license.
#27. Deuteranomaly—one form of red-green colour blindness—is by far the most common form of colour blindness.
#28. More women than men are carriers of colour blindness, even though they are not colourblind themselves.
#29. Some people get rejected from a job assignment because of their colour vision deficiency.
#30. About 0.5% of all women are suffering from colour blindness.
#31. Blue-yellow colour blindness is a dominant not sex linked trait, which means both men and women are equally affected.
#32. Red-green colour blindness doesn’t mean that you are only mixing up red and green colours, but the whole colour spectrum can cause you problems.
#33. The anomaloscope is the most accurate colour blindness test known today.
#34. Police officer, firefighter, and airline pilot are the most famous jobs which require normal colour vision.
#35. There is no treatment or cure for colour blindness.
#36. Pseudoisochromatic plates were introduced by Professor J. Stilling of Strassburg in 1883; the Ishihara plates by Dr. Shinobu Ishihara followed almost half a century later.
#37. Different chromosomes are involved as sources for the different types of colour vision deficiency.
#38. Women can also suffer from colour vision deficiency.
#39. Monochromacy—also called achromatopsia—means you have only one type of colour receptors (cones) in your eyes.
#40. Colour blindness is also called Daltonism, after the scientist John Dalton.
#41. The most often used types of colour blindness tests are: pseudoisochromatic plates, arrangement test, and the anomaloscope.
#42. Better colour vision deficiency terms would be: red-blindness for protanopia, red-weakness for protanomaly, green-blindness for deuteranopia, green-weakness for deuteranomaly, blue-blindness for tritanopia, and blue-weakness for tritanomaly.
#43. John Dalton believed his whole life that the cause of his colour blindness is a coloured fluid inside his eye balls.
#44. Many colourblind people have problems with matching clothes and buying ripe bananas.
#45. Quite a lot of people with normal colour vision can’t pass an Ishihara plates test free of errors.
#46. The International Colour Vision Society is scientifically investigating every aspect of colour vision and colour vision deficiency.
#47. Confusion lines of the CIE 1931 colour space show exactly the colours of confusion for all forms of colour blindness.
#48. Only a whole battery of colour blindness tests can reveal the true type and severity of your colour vision deficiency.
#49. John Dalton was also colourblind himself.
#50. A Colblindor is a colourblind person who learned to enjoy his colourblind life ;-)
#51. Bulls are colour blind (monochromacy, AKA full colour blindness). They get mad because the matadors are teasing them, not because of the colour red.