вторичная пленчатая катаракта

SHORT-SIGHTEDNESS - (миопия) one of kinds of a clinical refraction of an eye, at a cut the parallel beams going from subjects, after their refraction in an eye incorporate in focus ahead of a mesh environment (fig. 1). On a retina at Б. the missing beams proceeding from subjects, located from an eye on close distance (fig. 2) incorporate in focus only. In this connection the remote subjects are perceived indistinctly. Distance within the limits of which probably precise sight, depends on degree Б.-the above Б., the there should be a subject closer. Подробнее...

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...