Visual perception

Visual perception is the ability to detect light and use it to form an image of the surrounding environment. Photodetection without image formation is classified as light sensing. In most vertebrates, visual perception can be enabled by photopic vision or scotopic vision, with most vertebrates having both.

Visual perception detects light (photons) in the visible spectrum reflected by objects in the environment or emitted by light sources.
The visible range of light is defined by what is readily perceptible to humans, though the visual perception of non-humans often extends beyond the visual spectrum.
The resulting perception is also known as vision, sight, or eyesight.

Back to Contrast & Accessibility →

Source: Wikipedia · Image: Wikimedia Commons · Public domain