colour vision


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to colour vision: color vision, colour blindness

colour vision

the ability of some animal groups to detect colour in an object, which is due in vertebrates to the activity of CONE CELLS in the retina of the eye. According to the TRICHROMATIC THEORY of colour vision, our perception of a multitude of colours is made possible by differential stimulation of only three types of cone cell, each containing a different coloured pigment (see IODOPSIN). Examples of animals with colour vision include primates, many fishes, and most birds and insects. Animals without colour vision probably see objects in shades of grey (monochrome vision).
References in periodicals archive ?
Last week, City, University of London's Centre for Applied Vision Research (CAVR) held the Colour in Health and Employment Symposium, an opportunity for researchers and professionals in the field of colour vision research and testing to discuss the latest advances in the field, share challenges they have had, and breakthroughs they have made toward their goals of improving the education, employability, safety and health of people with deficiencies of colour vision across the world.
Cone cells are what allow us to have detailed and colour vision. In colour-blind individuals the photopigment functions differently and causes a different colour perception.
"Our research is really trying to figure out what pathways these cells take to give us that special colour vision," he added, in the paper to be published in the journal Science.
Your eye doctor will assess your colour vision, peripheral vision, pupil reaction to light, visual acuity, and will also look inside your eye with an instrument called an ophthalmoscope to determine whether your optic nerve appears pale.
People with red-green colour vision deficiency then looked through the lens at their surroundings and a series of numbers.
"The owner Dietmar Hilgert dreams of running Berghain in the Gold Cup because he bred Colour Vision, who won the race a few years ago," said Hirschberger.
Spalding JAB: Doctors with inherited colour vision deficiency: their difficulties in clinical work.
Key Words: Colour Vision Deficiency (CVD), frequency, shade selection, restorative dentist.
There are many examples of animals in nature that have limited colour vision, yet some have managed to develop high-performance eyes that, in some respects, far surpass our own visual capabilities.
Colour vision deficiency (CVD), an X-linked recessive disorder, is predominantly present in males.
ISLAMABAD -- Men with higher blood pressure are more likely to have impaired colour vision, a new study has found.
Correct colour vision is vital in welding tasks where safety can depend on the correct recognition of colours in safety signs and signals.