карнавальные контактные линзы

Distinguish three degrees Б.: weak - up to 3 dioptries, average - from 3 up to 6 dioptries and high - more than 6 dioptries. Allocate as special disease heavy, or progressing, Б., at a cut there are changes in environments of an eye and on eye day. Complications of such kind Б. can be отслойка a mesh environment, a haemorrhage in environments of an eye, etc., resulting{bringing} to significant downturn of sight and even to blindness. Подробнее...

To choose the most removed subject outside of a room and to look at him{it} continuously within 10 minutes, trying to consider his{its} smallest details. The the subject, the above effect from this exercise will be more removed. As well as in the previous exercise, in no event it is impossible to tear off a sight from the chosen subject before end of exercise. Подробнее...