Glare (g l a r e)
Refers to the unsuitable brightness distribution in the visual field, , resulting in visual discomfort and reduced object visibility Visual conditions. There is a uncomfort feeling in the eye vision that a person cannot withstand that would cause disgust, discomfort or even loss of vision Vision. 

Excessive brightness in a special location of vision, or excessive brightness changes.  

Glare is one of the important causes of visual fatigue.