Humans normally have three types of cones, usually designated L, M and S for long, medium and short wavelengths r… 展开

The difference in the signals received from the three cone types allows the brain to perceive a continuous range of colors through the opponent process of color vision. Rod cells have a peak sensitivity at 498 nm, roughly … 展开

• Achromatopsia (rod monochromacy) – a form of monochromacy with no functional cones
• Blue cone monochromacy – a rare form of monochromacy with only functional S-cones… 展开

• Disc shedding
• Double cones
• RG color space
• Tetrachromacy
• Melanopsin… 展开