профилактика близорукости средствами физической культуры

Actually, any eye (irrespective of, whether there is a speech about a normal eye with usually normal sight or we deal with eyes with the broken sight) has no always the same value of a refraction. The refraction of any eye varies not only day by day, not only hour from one hour or from one minute to one minute, but it is literally every second. Подробнее...

Peripheral sight (field of vision) is defined{determined} with the help of the special device - perimeter. At people of some trades (drivers, drivers of trains, etc.) necessarily define{determine} colour sensation by means of special tables. Ability Г. to perceive light and to distinguish various degrees of his{its} brightness ability to adapt to different brightness of illumination - refers to светоощущением, and adaptation of an eye. Adaptation define{determine} the special device - адаптометром. Frustration of tempo adaptation (its{her} delay) carries the name гемералопии Подробнее...