What is myopia

summary

Myopia should not be unfamiliar to everyone, especially with the popularity of computers, mobile phones and other technology products, more and more people have myopia, showing the characteristics of younger age. Let's see what is myopia.

What is myopia

First of all: myopia, the name of traditional Chinese medicine. When the eye is in a relaxed state, the focus of the parallel light falls in front of the retina after being refracted by the refractive system of the eye.

Secondly, the nearsightedness is also called nearsightedness. The occurrence of myopia is related to many factors, such as heredity, development, environment and so on, but the specific pathogenesis has not been understood and is in the process of research.

Finally: to identify true and false myopia, in addition to optometry in the hospital, a simple method is to hang an international standard visual acuity chart at a distance of 5 meters, first determine the vision, and then put on 300 degree presbyopic glasses, overlooking the distance, the eyes will slowly appear cloud like scene, half an hour later take off the glasses, and then check the vision, such as vision enhancement, can be considered as false myopia.

matters needing attention

Develop a good habit of using eyes, keep a correct posture when reading and writing, keep a distance of about 30cm between eyes and books, and do not read books when walking, riding or lying in bed. At ordinary times, whether studying or working, we should keep the environment lighting moderate to avoid eye fatigue.