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Colour vision deficiency
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Vision is the most important
human sensor: 90% of all information received
is via vision, 5% via hearing, 2% touching,
2% tasting, 1% smelling. The loss of information
due to inadequate colour decoding prevents
or slows down comprehension, increases reaction
time and generally lowers the quality of life.
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8% of men
and 0,5% of women have colour
deficiency or colour blindness
in the civilized word. According to the
previous statistic there are 32,6 million
CVD men in USA, Japan and West-Europe.
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Colour deficient children
encounter problems at kindergarten, at school
by painting red grass, green roofs, not being
able to solve math problems etc. And can be
the subjects of accompanying ridicule and
jokes when not able to see their colourful
books or maps or the board properly. |
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Colour blindness and
colour deficiency
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The human eye can simultaneously
detect three primary
colours, red green and blue. All other
colours are obtained by through the mixing
of the three primary colorus. In the case
of color deficiency one or more primary colours
are not detected in the normal way, while
people who are colour blind see shades of
grey only (total colour blindness). |
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Under the most recent theory of colour
vision, color
blindness is recognized as an
extreme case of color deficiency.
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