Vision Photopic

Photopic vision

Photopic vision (v. photopica; Greek phos, photos light + ops, opos eyes, vision) is vision at sufficiently high levels of illumination, when predominantly cones - the photoreceptors of the retina - work.

Photopic vision provides color vision and maximum visual acuity. It is based on the work of cones, which are most sensitive to long-wave (yellow-green) light with a maximum sensitivity of 555 nm.

With photopic vision, the eye adapts to bright light, the pupil narrows, and predominantly the cones on the retina are excited. This allows you to distinguish colors and small details.

Photopic vision is typical for daytime conditions with illumination above 3 cd/m2. It provides the sharpest color images and works in bright daylight.

Photopic vision is the ability to see clearly in bright light. Phototic limitation refers to the inability to distinguish fine details in low light as a result of a temporary loss of perception of color and brightness of objects. Ptosis is expressed either episodically or constantly. The condition is caused by a decrease in the susceptibility of the visual apparatus, is transient in nature and arises due to