If you can't choose a good pair of glasses, the power rises fast. A good pair of glasses should be c

At the beginning of the school year, the issue of "checking eyesight" has gradually been put on the agenda of families.

After all, in the face of children's perennial limit, never fall myopia, not to check is absolutely impossible. If the child does not follow the doctor's advice in time to wear appropriate glasses, myopia is more likely to deepen.

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In fact, wearing glasses, in addition to ensuring that children's study and life will not be affected, or one of the basic methods of myopia correction.

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So how to choose the glasses that fit the child or yourself? Please take 3 key knowledge points.

I want to pick a good pair of glasses

Accurate optometry is the premise

The first step of the key is to match the degree.

Professional inspection equipment, such as computer optometry, comprehensive optometry, and employees with optometry professional certificate, are indispensable for accurate optometry.

Many parents want to be lazy and may take their children's past diopter and pupil distance to get glasses, but accurate optometry is not equal to simply checking the diopter and pupil distance. They also need to consider other factors such as eye needs.

Only after a series of careful services of "consultation objective refraction subjective refraction try on prescription" can children get the optical parameters that are really comfortable to use their eyes.

It's better to find a qualified and reliable fitting agency instead of being unpredictable.

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Frame selection criteria:

Light, comfortable and safe + children like it

When choosing a frame, you can't blindly pursue the beauty of the frame, but ignore the functionality of the frame. In order to choose the right frame, we need to consider the degree, pupil distance and eye demand of the optician.

In the selection, we can ask the professional for advice, focusing on the lightweight, comfort and safety of the frame. At the same time, we should prevent the problem that the frame is too large and the pupil distance is too small, resulting in the lens can not be assembled normally.

In addition, the nose bracket of the frame is also worth mentioning.

The child's facial bones are still developing, and the bridge of the nose is not obvious. Therefore, it is more appropriate to choose a frame that can be adjusted according to the shape of the child's bridge of the nose. Inappropriate nose support will lead to frequent sliding of the lens frame, which will not only make it uncomfortable to wear, but also cause differences in optical parameters, which will affect the myopia correction effect and lens function.

In addition to choosing adjustable nose pads, parents can also consider adding anti-skid covers to their children's glasses legs to ensure that they can wear stable glasses when they exercise.

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Finally, if the conditions permit, try to let the children choose the style and color of the frame. After all, this is their decoration, only if they like it, they will wear it carefully.

Selection criteria for good lenses:

One through, two thin, three wear-resistant

One penetration refers to the transmittance of the lens.

If the eye is the window of the mind, then the glasses are the second window of the mind. The so-called "light transmittance" refers to how bright the window is.

When selecting lenses, the higher the transmittance is, the better. In addition to the difference of lens materials, good film coating and coating technology can greatly improve the transmittance of the lens.

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Two thin, refers to the refractive index of the lens.

Generally speaking, under the premise of the same degree, the higher the refractive index, the thinner the lens. Parents can choose the appropriate refractive index according to their children's degree, so that the lenses are thinner, not only good-looking, but also lighter.

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Third, wear resistance means long service life of the lens.

This is not only to make a pair of glasses last longer, but also to consider its safety.

For example, although the transmittance and refractive index of glass lenses are very high, they are fragile, unsafe and heavy, which will make it a burden for children to wear, so they have been generally replaced by resin lenses.

We all hope to give full protection to children's eyes, so in different eye environments, it's better to use multi-functional lenses to meet different needs.

For example, when using electronic products indoors, an excellent lens should have both close use function and digital protection function.

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