How often do you change your child's glasses? Some parents replied that it was a few months or a year, while others said that as long as the glasses did not "lack arms and legs", the child's degree did not grow to more than 100 degrees.
This is not right, we must change glasses in time, do not love with glasses to the end!
Because the child's vision is in the developmental stage, try to do eye refraction once every six months to check whether the child's degree has changed.
At this time, it is divided into two situations, the child's degree increases or does not change, according to the child's situation specific analysis.
Your child's degree changes by more than 25°
Usually, a child's myopia will rise by 75 degrees or 100 degrees a year, and new glasses will be worn to adapt to the new myopia.
There is also a situation: if the prevention and control of myopia is done well, the child will have a regression in the degree of myopia, and there are more cases of 25 degrees of regression.
In this case, there is no need to test new glasses, because the 25-degree regression does not change the mirror, although there will be a situation of correction, but because the myopia prevention and control work is done better, there is no great impact on the child's eyes, and there is no need to change the lens.
However, if some children respond quickly to myopia prevention and control measures and the degree regresses to more than 25 degrees, parents need to take their children to a professional eye hospital for glasses fitting.
Because of this situation, the child is prone to the phenomenon of inappropriate glasses, and the ciliary muscles have been in a state of spasm, which aggravates the fatigue of the eyes.
Eye fatigue will deepen myopia, and if this is the case all the time, the eye vision will decline more quickly.
The child's degree has not changed
Need to change glasses?
Sometimes after a year, the child's degree has not changed, do you want to change the mirror? At this time, two points should also be considered: the degree of lens use and the child's pupil distance development.
1
Degree of lens use
Glasses, like your phone, are consumables. Once the lens has a scratch, it will obviously affect the optical correction performance, not only can not play a good role in improving vision, but will cause a series of visual fatigue phenomena.
After the frame becomes crooked, change the mirror in time. The skewed frame not only affects the appearance but also causes the horizontal deviation of the optical center of the lens, increasing the burden of eye adjustment function.
Glasses worn for a long time, the frame is easy to slide, deformation, if not in time to test the glasses, it will easily lead to eye fatigue, such as:
When some people really can't see things in the distance, they will raise their glasses to look up, which is easier to deepen myopia.
2
Interpupillary distance development
When wearing glasses, the parameter of interpupillary distance (distance between the eyes) needs to be considered, and the distance between the center of the two lenses should match the distance between the child's pupils.
When the optometrist gives the child glasses, he uses the pupil distance meter to measure the accurate distance so that the optical center of the eye and the optical center of the lens coincide.
After the child wears glasses with the right interpupillary distance, it will be clearer and more appropriate to see things.
However, because the child's pupil distance is increasing year by year, after a year, the pupillary distance increases, but the glasses are not changed, the child's pupil distance exceeds the optical center distance of the lens, which will produce a prism effect.
When the prism effect occurs, the child has a shift phenomenon when looking at the object and when looking at the object with a light background, there is a colored halo around the visible object.
This is the time to make the child's vision very uncomfortable, then it is necessary to change the child's glasses in time.
So don't wear a pair of glasses for 3 or 4 years, change glasses for your children in time to protect their vision.
Medical guidance: Director Sun Li of Guangzhou Xima Ophthalmology
Producer: Su Guowen | Editor-in-Chief: Lai Peng
Edit: Agatha
Produced by Guangzhou Xima Ophthalmology New Media Department