Definitions

1. adjective

relating to or affecting the area of the visual field in which vision is most sensitive, especially the part of the visual field where color vision is most sensitive and the field of view is sharpest

“The photopic response to the bright sunlight was intense.”

2. noun

A photopic visual system or range, especially one that is sensitive to the range of colors and intensities that are perceived by the human eye

“The photopic spectrum of the new camera lens was impressive.”