A pair of glasses hangs the nose beam for several years. Have you ever thought of your eyes so special?
In the spectacles, many people are very "special", do not wear lenses damage, mirror frame cracking, easy not to change glasses.
Doctors in the center of Ophthalmology said that long-term without glasses may damage vision, especially children and adolescents, should check their eyesight regularly, otherwise it will affect the normal development of vision.
No glasses for a long time, the degree of nearsightedness is faster.
Glasses were made according to the parameters of the eyes, such as flexion, binocular vision, vision correction, and so on.
But for a long time, all kinds of parameters of the eyes will change. Maybe the glasses that are used before are not suitable for the state of the eyes now.
Especially for children and adolescents, more attention should be paid to them. If the child is found to have squinted eyes, tilt his head and rely on close reading, he should take the child to the hospital as soon as possible.
If the degree is increased, the original glasses can not be seen clearly. If you continue to wear them, you will lead to these bad habits of eyes and deepen the myopia.
The mirror is loose, you may not know.
Now the frame lenses are mainly resin lenses, with long scratches and removal of film, the mirror is also possible to appear mirror legs, unevenness of the nose, wear position is not appropriate.
The movement of the frame is sometimes easy to be ignored because the angle is not very obvious.
The deflection of the frame will lead to the optical center shift of the lens, that is, the prism effect. Light eye discomfort, heavy will have dizziness and other systemic symptoms.
Optometry for all the mirror
To replace glasses, it is necessary to re examine the optometry, buy glasses on the basis of previous degrees and do not optometry directly to buy a pair in the store. This is not advisable.
Glasses are a "big project". First, it is necessary to test the refractive index of the eye, the pupil distance and other parameters, and also consider the factors such as visual function and other lasting comfort. The professional doctors choose the most suitable lenses and frames according to these data.
Regular review is more important than changing glasses.
Review, on the one hand, to see the health of the eyes, check whether the refractive power of the eyes has changed; on the other hand, check whether the lenses and spectacle frames are used together. It is not always necessary to change glasses for every examination. It mainly depends on the effect of glasses on the improvement of eyesight, so as to adjust in time.
Children and adolescents vary in degree and are often overexposed. They must be reviewed regularly. It is recommended to check every six months every day. If vision correction is bad, it is best to check 1~3 once a month.
Adults aged 25~40 have relatively stable eyesight. If there is nothing wrong with them, they can wear glasses clearly. They can be rechecked every 2~3 years.
When people are over 40 years old, they will start to see old flowers. They need to match the old glasses.
For people over the age of 60, the degree of aging will not continue to increase, but it will cause vision loss due to diabetes, cataract and other problems. Therefore, people over the age of 40 should check their eyesight every 1~2 years.