defective color vision

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• Color vision — White light shone onto a green surface is perceived as green by the human eye, and processed as such in the brain s visual cortex …   Wikipedia

• color scotoma — an isolated area of defective color vision …   Medical dictionary

• Color photography — Color film redirects here. For the motion picture equivalent, see Color motion picture film. A circa 1850 Hillotype photograph of a colored engraving. Long believed to be a complete fraud, recent testing found that Levi Hill s process did… …   Wikipedia

• Color blindness — Colorblind and Colourblind redirect here. For other uses, see Colorblind (disambiguation). Color blindness or color deficiency Classification and external resources An 1895 illustration of normal vision and various kinds of color blindness …   Wikipedia

• anomalous trichromatic vision — defective color vision in which a person has all three cone pigments, but one is deficient or anomalous (but not absent). There are three types: protanomaly, deuteranomaly, and tritanomaly; they may be either acquired (resulting from a retinal,… …   Medical dictionary

• Daltonism —    John Dalton (1766 1844) was the consummate scientist. His interests embraced research, theories, and experimentation. Dalton was not permitted to attend Cambridge or Oxford because those schools were open only to members of the Church of… …   Dictionary of eponyms

• confusion colors — different colors that are likely to be mistakenly matched by individuals with defective color vision (e.g., violet and blue with defect of vision for red); for this reason they are combined in the design on charts used for detecting different… …   Medical dictionary

• pseudoisochromatic colors — colors that appear the same to an individual with defective color vision; see confusion c s …   Medical dictionary

• Liquid crystal display — LCD redirects here. For other uses, see LCD (disambiguation). Reflective twisted nematic liquid crystal display. Polarizing filter film with a vertical axis to polarize light as it enters. Glass substrate with ITO electrodes. The shapes of these… …   Wikipedia

• Chromatophore — Zebrafish chromatophores mediate background adaptation on exposure to dark (top) and light environments (bottom). Chromatophores are pigment containing and light reflecting cells found in amphibians, fish, reptiles, crustaceans, and cephalopods.… …   Wikipedia

• Visual acuity — 20/15 and 20/15 vision redirect here. For other uses, see 2020 (disambiguation). Typical Snellen chart used for visual acuity testing. Visual acuity (VA) is acuteness or clearness of vision, which is dependent on the sharpness of the retinal… …   Wikipedia