Photopic vision

In humans and many other animals, photopic vision allows color perception, mediated by cone cells, and a significantly higher visual acuity and temporal resolution than available with scotopic vision.

The human eye uses three types of cones to sense light in three bands of color.

Their sensitivity ranges overlap to provide vision throughout the visible spectrum.

For the blue-green region (500 nm), 50% of the light reaches the image point of the retina.

[2] Most older adult humans lose photopic spatial contrast sensitivity.