Long-term close use of the eyes, excessive use of eye accommodation, there is not enough residual accommodation for standby, so that the eyes are easy to fatigue, forming pseudomyopia. Over time, the anterior and posterior diameter of eyeball becomes longer, leading to true myopia, severe loss of vision, and some even develop into high myopia.
Long-term close eye use is the main reason for students' myopia. Teach children to have a correct posture, a straight body, a straight head, a straight neck, and eyes and eyes at right angles to the plane of the book. Pay attention to keep three distances: one foot, one punch and one inch. That is, when reading and writing, the distance between the eyes and the book should be more than one foot; Keep your fist distance from the desk; When holding a pen, keep an inch between your hand and the nib.
Extended data:
Disease symptoms:
1, Eye congestion: If your eyes feel pain, you need to see a doctor to see if you are infected with a disease called scleritis. If only one eye is affected, there may be a serious problem.
2, eye edema: eye edema is a sign of thyroid problems.
3, eyelid drooping: eyelid drooping is mostly a manifestation of aging. If only one eye has drooping eyelids or even redness and pain, you need to see a doctor quickly, because there may be serious problems.
4, pupil asymmetry: sometimes congenital, but when the volume of a pupil changes, it may indicate that there is something wrong with the nerve of this pupil or a brain tumor has occurred.
5, there are white spots on the iris of the eyeball: it may be corneal ulcer, usually caused by wearing contact lenses. See a doctor at once.
6. Itching, jealousy and tears: These signs may indicate allergies. Try taking medicine and cold compress.
People's Daily Online-Parents' attention: Be wary of children's seven eye habits!