дальтонизм рецессивный ген

CATARACT - cataract of an eye. Distinguish К. congenital and got. Congenital К. are found out at children's age, are, as a rule, bilateral and usually do not progress. Downturn of sight depends on size and intensity помутнений. The reasons of development got К. are various: a trauma, эндокринные diseases, infringements of a metabolism, нек-рые professional harm, etc. The Reason of development most frequently meeting senile К. is not clear. Подробнее...

For this exercise it is required to prepare a pure{clean} sheet of a white paper preliminary. In the center of a sheet a felt-tip pen or a color pencil to draw a green point in diameter 1 - 2 millimeters. Having fixed a sheet of a paper before itself it is strictly perpendicular to a line of a sight on distance of 33 centimeters, continuously to look at a green point in the center of a sheet within 10 minutes, trying to consider her{it} as it is possible better. The distance of 33 centimeters is optimum distance for reading, therefore it should necessary to be observed. During performance of exercise in no event it is impossible to tear off eyes from a green point in the middle of a sheet. At School of Fast Reading this exercise is used for training peripheral sight which allows to see all page simultaneously. After performance of exercise to give eyes to have a rest 3 - 4 minutes, observing the above-stated recommendations. Подробнее...