This research was also able to identify a number of things that patience is not; specifically, patience is not just the opposite of impatience, delay of gratification, or self-regulation of emotion. The evidence for the effects of patience, though limited, seems to reflect both positive and negative outcomes.
Using the same method, in 1999â2004, myopia prevalence was estimated to have climbed to 41.6%. A study of 2,523 children in grades 1 to 8 (age, 5â17 years) found nearly one in 10 (9.2%) have at least â 0.75 diopters of myopia.
To understand myopia it is necessary to have a basic knowledge of the main parts of the eye's focusing system: the cornea, the lens, and the retina. The cornea is a tough, transparent, dome-shaped tissue that covers the front of the eye (not to be confused with the white, opaque sclera).hysiological myopia This is the most common type of myopia. It is believed that high myopia is due mainly to genetic factors whereas low myopia is more likely due to environmental influences. It occurs because of a failure in correlation of the refractive power of lens and cornea, and the length of the eye.