What colors are the human eye sensitive to?

The human eye is sensitive to red, green, and blue light because these colors correspond to the three types of cone cells found in the retina. Each type of cone cell is responsive to different wavelengths of light corresponding to these colors, allowing us to perceive a wide range of colors through a process called trichromatic vision. When light of various wavelengths hits the retina, the cone cells respond and send signals to the brain, which then interprets these signals as different colors based on the combination of cone responses.

This understanding of color perception is foundational in fields like ophthalmology and optometry, as it informs how vision assessments and color vision tests are conducted. Other combinations mentioned, while they might represent colors visible to the human eye, do not accurately reflect the specific sensitivities of the cone cells.