Twilight vision

Twilight vision or, as it is also called, “mesopic” is the ability of the eye to see in low light conditions. It plays an important role in our lives, as it allows us to navigate in the dark and move safely at night.

Night vision is the result of visual cells called rods and cones. Rods are responsible for the perception of light at dusk, and cones are responsible for color perception. When the light becomes dim, the rods begin to work more actively, which allows us to see at dusk. However, the less light there is, the worse we see.

In people with good twilight vision, the eyes can operate in complete darkness and provide sufficient visibility for safe movement. But for some people, especially those who suffer from visual impairments, dark vision can be a problem.

An important point in the treatment of twilight vision impairment is the use of special glasses or contact lenses. They help increase image brightness and contrast, which improves visibility in low light conditions. Special exercises may also be used to train twilight vision, such as reading in dim light or playing games in low light levels.

Overall, night vision is an important skill that allows us to navigate safely at night. However, this may be difficult for some people, and in such cases it is necessary to use special glasses or contact lenses, as well as perform vision training exercises.

Twilight vision is part of the photopic range of the visible spectrum, located between bright and dimly lit objects and characterized by a discrepancy in the brightness of objects. The field of view of twilight vision extends from the point where an object can still be seen by the human eye to complete darkness. In this case, the sensitivity of the eye to bright and dark objects is weakened or absent.

At the same time, the human eye needs light, because... This is electromagnetic radiation that uses photoreceptors - cones and rods. Light enters the eye, passes through the pupil and the cornea, behind which there is a yellow spot - it is the center of light perception. After light come color receptors - red, green, blue cells. And the central fossa, many sources also indicate either the central fossa, or simply the fossa. The fossa has this name because it has the highest clarity of perception.