A super scientific term used to describe the effect that Color Correction Lenses have on certain colors, for example: They make colors pop more, especially reds (for me), which is useful when outdoors, but they’re not life-changing.Some Redditor I like…

A purple-tinted opsin that has the same protein component as Rhodopsin (Scotopsin), but a different Chromophore (Retinal Vitamin A2 instead of A1). Porphyropsin has a Peak Wavelength at about 560nm. This form is common in freshwater fish and amphibians.

A given Trichromatic (3D) Color Space, is defined by three Primary Colors, such that every color in the Color Space can be defined as a mixture of those three Primaries. RGB Color Spaces are defined by their Red Green and…

The "first" type of Colorblindness (before Deu​tan and Tritan‌‌‌​) that acts as an umbrella term for Protanomaly and Protanopia. Protan CVD is associated with the L-Cone and affects the red-green Opponent Channel (generally a weakening of the red stimulation). Protan…

A common type of Colorblindness. It is the Protan form of Anomalous Trichromacy. https://www.youtube.com/watch?v=3qFAtbMQqkE

A common type of Colorblindness. It is the Protan form of Dichromacy. https://www.youtube.com/watch?v=3qFAtbMQqkE

Also PIPs; A type of Colorblindness Test where images (shapes, numbers, letters, etc.) are hidden in an image where the foreground and background are Colors of Confusion. They are therefore visible to Color Normals but not to Individuals with the…

The shift of a human eye's peak luminance sensitivity (peak of the Luminosity Function) of the eye to shift toward the blue end of the color spectrum at low illumination levels. This is because the Scotopic Luminosity Function peaks at…

A tongue-in-cheek belief that the color purple does not actually exist and is a conspiracy by Color Normals. It is common in Colorblind communities since all forms of colorblindness have trouble seeing purple. Color Normals also claim that Purple (sometimes…

The hypothesis that ancient photosynthetic organisms on Earth (or on other planets) could have used Retinal based photosynthesis instead of the common Chlorophyll-based photosynthesis today. The Absorption Spectrum of Chlorophyll is bimodal with sensitivity to blue and red regions, and…