If the prescription is high, choose wider glasses or narrower

For people with high myopia, it is advisable to choose narrower spectacle frames. Because myopia lenses are concave lenses, the thickness of the periphery is thin in the middle, and the higher the degree of myopia, the thicker the spectacle lenses. Therefore, choosing a narrower frame can reduce the thickness of the lenses, making the glasses look lighter and more comfortable to wear.

While face shape is also a consideration in choosing a spectacle frame, it has less of an impact than myopia. For those with a standard oval face, glasses with a variety of frames can be used. For people with wide faces, small and narrow glasses frames are not suitable, and for people with long and thin faces, they are not suitable for spacious glasses frames.

It is important to note that in addition to the lens thickness and face shape, the weight and stability of the frame should also be considered when choosing a spectacle frame. Some heavier frames can cause discomfort to the head, while unstable frames tend to slip or relocate, affecting the fit. Therefore, when choosing a spectacle frame, you need to consider it comprehensively based on your actual situation and needs.

If you have a high degree of myopia, it is best to choose smaller lenses. The relative height is also smaller, generally this angle is not obvious, but the width must be narrow, because the closer to the center of the lens, the thinner, if the lens is too wide, others can clearly see that the lens is very thick from the side.

It is advisable to choose an appropriately smaller frame with a refractive index.

Taller (e.g., , , aspherical lenses.

The higher the refractive index, the thinner the lens. The opposite is the thicker.

The middle of the lens is the thinnest, the thicker the edge, the larger the frame, the thicker the edge after the lens edging machine grinds out, although the surface can not be seen, but it can be seen from the side.

You can choose the right one for you, how to fit it? It is suitable for your face shape, interpupillary distance and glasses. If you don't want to be too thick, you can choose glass, but it will be heavier, and it is recommended to choose about 800.

Anyone who wears glasses knows that they need to choose their frames before they buy them. Nowadays, there are many kinds of situations, materials, and shapes, which are dazzling. So are there any requirements for choosing a frame?

For mild myopia within 300 degrees, there are basically not too many restrictions and requirements for the selection of frames, as long as the size is appropriate, the style is liked, and the wearing is comfortable. Then for medium to high myopia above 300 degrees.

For people, choosing a frame is more to consider. Because as the power increases, the thickness of the lens also changes. Myopia lenses are concave-convex lenses that are thin in the middle and thick on both sides. Therefore, people with moderate and high myopia above 300 degrees generally choose plates.

or TR material frames are the majority. The reason is that the edges of the frame are thicker, which can wrap the protruding lenses, and the aesthetics are relatively better. Moreover, high myopia above 600 degrees generally does not pick too large frames, because the larger the frame, the thickness of the lens is magnified.

So it's not like all frames are chosen randomly. It is necessary to choose the right frame according to the prescription. When choosing with customers, you need to give tactful suggestions to avoid unnecessary after-sales problems and reduce customer satisfaction.

At this point, the teachers of the Limei store do a good job, and when I take my children to choose frames, they will help them choose the frames and give reasonable advice. The young members of Seelime will also greet us warmly. In addition to **, as long as the child likes it, the size is generally okay.

1. It is best to use the power that suits you with glasses, and a little higher is conducive to correcting your vision, but it should not be too high. Children and adolescents are fitted with glasses, preferably with dilated eye refraction. Dilated pupils allow for the elimination of accommodative and accommodative spasticity, thus avoiding overcorrection.

2. Corrective vision does not have to be too demanding: the corrected vision of wearing glasses should generally not be exceeded, and it is advisable to be able to see the blackboard words in class clearly, and must not blindly meet the requirements of children who wear glasses, they often hope that the clearer the vision of wearing glasses, the better.

3. The audition before the glasses is very important, it must be serious, and the fitting time should be more than half an hour. Auditions should be done "four looks" and "hyperactivity". "Four looks" are to see far, near, sky, and earth; "Hyperactivity" means that wearing the examination lenses should walk, move, go up the first step, move, twist the head, adapt to the adaptation, carefully experience and observe, until there is really no discomfort, and then prescribe glasses.

Whether the glasses are suitable or not should be measured from two aspects: the quality of the assembly and production of the glasses and the wearing effect.

1. The quality of glasses assembly is judged by whether the optical quality of glasses meets the national standards for glasses. Key indicators include:

1. The top power of the lens.

Tolerance (the permissible error between the power of the lens and the power of refraction).

2. Horizontal deviation of the optical center.

Deviation between the optical center distance of the glasses and the interpupillary distance prescribed by the wearer.

9－－2mm

3. The optical center is vertically different.

The difference between the optical center heights of the two lenses.

3) 4. Allowable error of cylindrical axis.

Whether the assembly of glasses is in line with GB is a very professional issue, which is regularly supervised by technical supervision departments at all levels with specific instruments and equipment.

Supervise and inspect the optical store to control, and consumers cannot confirm whether the above indicators are qualified with the naked eye.

Second, whether the wearing effect is good or not, the main judgment criteria include:

1. Safety. It is very important that the glasses are safe.

2. Comfortable. Whether the finished glasses are suitable for the glasses dispenser.

3. Ideal vision correction. Whether the best correction of refractive error has been achieved.

Even if the prescription of the glasses is accurate, the optical center of the glasses is offset, which puts a burden on the eyes. Only if the following conditions are met, the right and comfortable glasses are available.

a) the center of the spectacle and the pupil are the same;

b) the angle of the lens is 12-13 degrees;

c) The distance between the lens and the eye is centimeters.

When the frame is too large and the nose pads or temples do not fit the shape of your face, the lenses are not in their normal position, and the function of the glasses is reduced by half.

Why do you want to be big and small, when you test your eyesight

Wait to be as accurate as possible, but in any case, your DAO vision is not able to go back to the past, because it is difficult for people with glasses to reach the degree of normal people, such as 400 degree eyes, generally wearing glasses is about a degree, so don't be nervous, it is best to wear glasses This is comfortable, no foreign body feeling, or dizziness!

The best adaptation. In fact, the adaptation degree of reading glasses is not fixed, in addition to the different degrees of presbyopia, there is also a **distance version.

Nearly different. Generally, the prescription of glasses according to age refers to the most comfortable and clear object 30 cm away from the eye. In the application, if you look at a close and small object, the power should be a little higher, if you look at a distant and large object, the power should be a little lower, for example, when I look at the mobile phone, it is generally suitable for 300 degree glasses, when looking at the large screen of the computer, the distance of about 1 meter is suitable for 50 degrees, and when it is 70 cm, it is suitable for 100 degrees.

If it is interchanged, it cannot be used at all, and it is not good for the eyes for a long time.