The eye strain some higher grades elementary student or the middle-school student, reads the time one to be long, the handwriting can overlap serially front, gains ground looks at again the thing The body, has is neither friendly nor aloof, the fluctuation not steady feeling. After some people in sight the far long time to carry over again the vision the vicinity object, after or looks the near long time to carry over again far Place the object, can appear the short slurred phenomenon at present. These all are the eye eyelash shape myo- adjustment malfunctions the performance, is the result of by the eye strain. In addition Outside, some youth can have the soft hail grain to swell, the grain of wheat repeatedly swell or 睑 the reason inflammation. these
child vision although may achieve above 1.0, actually already "Played the sound" the nearsightedness prelude.

　　　The hyperesthesia while has eye strain, many people also are accompanied by the eye to be scalding hot, to itch, 干涩, 胀 痈, heavy ache to eye socket The depth portion proliferates, even causes migraine, also may cause the occiput, neck shoulder back being sore, this is because the eye sensory nerve occurs wearily The nature hyperesthesia is the result of.

　 　The whole body nerve is out of balance the original result good child to study can produce is sick of the mood, attends a lecture when the attention insufficient centralism, responded also has A slowness, the temperament changes irritablily, to the original affection thing also deficient interest, the academic record drops. Evening when sleep multi- dreams, multi- perspiration, body The body is easy to be tired, also has the dizziness, has a poor appetite and so on the symptom. These changes also soon has the
shortsighted information.