green-blind
Missing middle cones
Green-blind describes a form of color blindness in which green light cannot be perceived normally, making it difficult to distinguish green from certain reds and browns.
The condition, also called deuteranopia, results from missing or defective green-sensitive cone cells in the retina.
He's green-blind, so he can't tell when tomatoes are ripe.
Inability to perceive green
- daltonismDefective color perception
- photopigmentsLight-reactive visual molecules
- retinaLight-sensing tissue layer
- hereditaryPassed through generations
genetics · inheritance · chromosome · ophthalmology · optometry · diagnosis · screening · visual impairment
Spatial repetition interval
- spectrumContinuous range of values
- saturationState of complete permeation
- brightnessDegree of light emitted
- color matchingPairing harmonious hues
color perception · photoreceptors · luminosity · visual processing
Road signal system
- color codingAssigning hues to categories
- warning signalsIndicators of impending hazard
- ripenessReady to eat state
- map readingInterpreting geographic diagrams
wiring · accommodation · assistive technology · color filters · accessibility · user interface · universal design
deuteranopia
Inability to perceive green
- daltonismDefective color perception
- photopigmentsLight-reactive visual molecules
- retinaLight-sensing tissue layer
hereditary · genetics · inheritance · chromosome · ophthalmology · optometry · diagnosis · screening · visual impairment · congenital
wavelength
Spatial repetition interval
- spectrumContinuous range of values
- saturationState of complete permeation
- brightnessDegree of light emitted
color matching · color perception · photoreceptors · luminosity · visual processing
traffic lights
Road signal system
- color codingAssigning hues to categories
- warning signalsIndicators of impending hazard
- ripenessReady to eat state
map reading · wiring · accommodation · assistive technology · color filters · accessibility · user interface · universal design