контактные линзы констраст

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...

Sharp infectious конъюнктивит. The activator can be Kokh's stick - Уикса, пневмококки, streptococci, a diphtheritic stick, etc. Process begins sharply strong резью in eyes, sensation of sand after centuries, occurrence plentiful separated of конъюнктиваль-ного a bag. Конъюнктива отечна, гиперемирована (fig. 1), sometimes happens swelled a century. At epidemic К., caused Kokh's by stick - Уикса, the inflammatory phenomena are expressed most sharply. Usually both eyes are amazed. Defeat of a cornea is possible. Disease very much контагиозно, is distributed mainly in the countries with жаркпм a climate. Подробнее...