Grasp the 4 key words and choose the glasses that suit you

"I'm nearsighted, and my glasses aren't fitted properly. The more I wear them, the worse my eyesight becomes!"

"Glasses press on my nose bridge, causing headaches and dizziness..."

Today, we will discuss this issue that concerns all mothers and fathers - how can I choose suitable glasses for my child?

Xiaoying specially invited our Dean Wei Jing to answer everyone's questions.

>>Wei Jing, Director of Chengdu Yinghua Eye Hospital<<

After computer optometry, comprehensive optometry, mydriasis optometry and other procedures at a professional ophthalmology hospital, you will receive a fitting feedback sheet. After determining the final fitting degree, pupil distance and other data, you can start choosing glasses.

Everyone's eyes look about the same size, so why would their pupil distance be different? People's ages and face shapes vary greatly. Some people's pupil distance is less than 50mm, some can be as high as 70mm or more, and most people are around 60mm.

When choosing a frame, you need to check whether the pupil is in the middle of the frame. If the lens is evenly thick on both sides, the vision will be better. If the pupil is off-center, the lens will be thin on one side and thick on the other, and the vision will be distorted.

You can refer to the calculation method in the figure below for verification:

We need to consider the refractive index of the lens comprehensively. Lenses are divided into different refractive indices. The higher the refractive index of the lens, the thinner the edge of the lens will be, and the price will also rise accordingly.

Are 1.74 high refractive index lenses the best? The answer is no, because the higher the refractive index of the lens, the greater the dispersion. When you look from the outside of the lens, you will see circles of colorful outlines around the object. The dispersion phenomenon exists in all lenses, and it is more obvious in high refractive index lenses.

When choosing the refractive index of lenses, you should consider a comprehensive range of factors such as myopia degree, frame size, aesthetic needs, and visual comfort. The best option is the one that suits you.

How do you choose the right frame? It is best to choose a style that is light, tough, strong, durable, not easy to deform, non-irritating to the skin, and not easily eroded by skin secretions.

There are many kinds of frame materials on the market, but the common materials can refer to the following table:

How to choose the lens material? Lenses generally have the following materials:

1. Resin material: lighter, drop-resistant, wear-resistant and safer.

2. Glass lens: heavier, clearer, more wear-resistant, but fragile and less safe.

3. PC lens: It has strong impact resistance and is resistant to falling. It is often recommended to choose PC lens for sports glasses.

Just choose according to your needs.

Everyone's actual situation is different, and suitable frames and lenses are also different. You should consider your own needs comprehensively, communicate more with your optometrist, and choose the best style.

I choose good frames, good lenses and good materials for my child, but he always complains that the glasses slide down! Wei Jing: So when trying on glasses, you must pay attention to whether the frames and temples are suitable.

When trying on the glasses, make sure that the frames fit the bridge of your nose and ears without being loose or slipping; check whether the lenses are clear and your field of vision is wide; and feel how tight the glasses are. Pay attention to the following points:

1. The upper edge of the frame should not be higher than the eyebrows, and the eyebrows should not be visible in the lenses. If the frame completely covers the eyebrows, the proportions of the entire face will become very unbalanced.

2. The width of the frame should be larger than the widest part of the face. If the frame is too narrow, the face will appear larger, especially for people with sunken temples. A slightly wider frame can better modify the face shape.

How do I choose the temples?

The width of the temples should match the width of the face . If they are too narrow, they will squeeze the temples, and if they are too wide, the frames will become loose and slide down.

Director Wei Jing kindly reminds you: When getting glasses, it is best to go to a professional and regular ophthalmology hospital - with advanced equipment, experienced doctors and attentive service. This will not only ensure the accuracy and comfort of the glasses, but also better protect our eye health.