Myopia is the medical term for nearsightedness, a condition where the eye can see objects that are close. but fled when viewing objects far away. The word myopia comes from the Greek word for squint, because people with this disorder are always squinted in an attempt to more clearly see objects far away. That’s the main characteristics of people with myopia. Myopia most often found in children, usually found at the time of screening examinations at school. In general, myopia is a disorder passed down by their parents so often found in early school age. Characteristic of the development of myopia is increasing, the degree of disorder into the teenage years and then decline in young adulthood. Even though it is somewhat rare, myopia can be caused by the curvature of the cornea or the lens deformities. Therefore, to obtain a clearer picture of the causes of a person, a history of myopia in the family should be mentioned.
Myopia typically occurs due to longitudinal axis of the eyeball. Eyes should be round cross section, due to the elongation process is then shaped oval. Furthermore, it causes the elongation axis of refractive media is difficult to focus light rays precisely on the retina. Focused light beam in front of the retina. In line with the longitudinal axis of the eyeball, the degree of myopia will increase. At the age of the children through adolescence, the process of elongation of the eyeball can be a part of the body growth. Increase the degree of myopia requiring glasses are increasingly severe degrees of strength, because it is at the early age is recommended that the examination was repeated every 6 months. In the age group between 20-40 years, will slow down the progression of myopia. Despite this increase remain, especially in those who are just beginning to suffer from myopia over the age of 20 years.