How much difference is there between the lens and the frame of the myopia lens?

If you are in a regular hospital, the general error of 2-3mm is considered a normal phenomenon and does not affect your field of vision. In this case, there is no need to worry too much, if it is an ordinary optical store, the possibility of error cannot be ruled out, so relatively speaking, the equipment of the hospital is more authoritative and advanced than that of the optical store. When wearing glasses, the interpupillary distance should be measured, and when the assembly is required, the optical center of the two lenses must be aligned with the pupil center of the two eyes, so that the glasses are clear to wear, the vision is not deformed, and the eyes are not easy to fatigue.

The ** of the lens is generally related to the power. The higher the power, the lighter and thinner lenses are required, and the material of the lenses is different, so the price of the lenses is high. For example, Wanxin lens degree is more than 300 non-balls, and the thinnest non-balls are about 1000.

There is also the choice of lens function, which will affect the lens**. Functional lenses are common: progressive lenses, anti-fatigue lenses, photochromic lenses, defocus lenses, etc.

For example, imported Carl Zeiss, TAG Heuer, Essilor, etc., the design concept and principle of these lenses have their own unique patents, and the function of their lenses is relatively better, so it is not cheap. Because our domestic lenses started late, the development of optometry comprehension is relatively slow, and the current domestic lenses are relatively better, such as Wanxin, Mingyue, etc., but their design and fine and optical effects are slightly inferior to imported lenses. Therefore, the difference between a pair of glasses ranges from tens of 100 glasses to more than 100,000 glasses.

On the surface, you may feel that you can see it clearly, but there are actually more things involved.

There are thousands of high ones, and tens of dollars are low. Personally, I think it is best to choose the highest and best lenses, which is good for eyesight and more comfortable to see. As for the frame, the high and low materials are different, I don't think there is a need to match such a good material, just wear it comfortably.

Myopia glasses are determined by factors such as lens material, frame material, and your own brand.

1.Lens material: glass sheet, resin sheet and PC lens, etc.

2.Frame material: Now the glasses frame materials on the market are generally available:

Plates, pure titanium, TR90, alloys, memory alloys and ultem, etc. With the launch of TR90 and ULTEM, the modeling effect of the plate has been achieved to a certain extent, but it is lighter than the plate and reduces the pressure of the nose bridge; Plates, ultem and ordinary metal materials are relatively cheap, and pure titanium materials are more expensive.

3.Brand: Some eyewear is not only determined by the material, but also depends on the brand, such as Gucci eyewear, international brands such as Prada, Ray-Ban and Burberry.

Eyeglasses are also limited by a series of factors such as geographical restrictions, store rents and labor costs. The current place of professional prescription of glasses: eye hospital.

Summary. Lenses are more expensive. With myopia glasses, if it is not the kind of glasses that often fall, the general price (more than 100) of the frame is fine, it will not be so easy to break, and it is also very convenient to change the frame, there are many frame styles, and it is not distressing to change.

The lens is recommended to be equipped (about 500), the principle of myopia glasses is to improve refraction, good lenses and general lenses are still very different, and the degree of damage to the eyes is greater. Myopia is really inconvenient, so you must rest more to prevent pseudomyopia.

How much is the difference between the lenses and the frames of the myopia glasses?

Lenses are more expensive. With myopia glasses, if it is not the kind of glasses that often fall, the general price (more than 100) of the frame is fine, it will not be so easy to break, and it is also very convenient to change the frame, there are many frame styles, and it is not distressing to change. The lens is recommended to be equipped (about 500), the principle of myopia glasses is to improve refraction, good lenses and general lenses are still very different, and the degree of damage to the eyes is greater.

Myopia is really inconvenient, so you must rest more to prevent pseudomyopia.

Different materials** are different, and there are big differences. The difference between height and height is very large. So sometimes it's hard to tell the truth from the fake. See you go to the ophthalmology department of a big hospital.

First of all, the gap is really huge. It is not only the difference in the thickness of the lens that is visible in appearance, but also the light transmittance, coating, Abbe number, wear resistance and hardness, etc.

For big brand lenses, coating production, reflectivity, refractive index, etc. cannot be completed by a small workshop, and the cost is too high.

For example, there are several major brands of high-end lenses.

1. Zeiss lenses (Germany).

With the characteristics of precise grinding, exquisite optical surface design, outstanding light transmittance and anti-reflection performance, and excellent visual imaging quality, it ranks first in the field of optical lenses.

Lens series: A series, new Qingrui, new Mingrui, Zhenrui.

2. Essilor (France).

It is known for its high film hardness, outstanding wear resistance, not easy to scratch, and superior waterproof and oil-proof effect.

Lens series: A3 lenses (for daily use), A4 lenses (blue light protection)3, TAG Heuer (Japan).

Japan has the largest market share of lenses and is characterized by its high abrasion resistance and light reflectivity.

4. Bright moon lenses.

Mingyue is one of the best brands of lenses in China, and it is close to the people.

Lens series: lenses (Abbe number 37, clear vision), KR super tough lenses, PMC super bright lenses, etc.

Are you talking about the difference.

The first material of the lens is the main material, such as the use of tempered materials, wear-resistant materials, and anti-blue light coating on the surface.

The astigmatism is much higher than not, because it is not easy to process.

1. Different lens thicknesses: In the case of the same thickness of the lens center, the same material lens of the same power, the edge of the lens with a high refractive index is thinner than that of the lens with a low refractive index. The relative will be a little thinner.

2. Different refractive index: the higher the refractive index of the lens, the thinner and lighter the lens of the same power, and the more beautiful the glasses are. However, the higher the refractive index, the stronger the dispersion, and the lower the clarity of the lens image.

3. Spherical and aspherical surfaces are different: the spherical lens is definitely worse than the aspherical surface, especially the edge part of the field of vision, the field of view of the spherical lens is obviously curved, and the higher the power, the more obvious the effect. Most aspherical lenses on the market today are single-sided aspherical, not double-sided aspherical.

Myopia lenses are classified as functional lenses and ordinary lenses. Regardless of which lens, it is also a myopia lens.