Can spectacle lenses be thinned if they are too thick, and the difference between thinning lenses an

The edges are thick, and they look thinner from the side, and it will be better after polishing, but the heaviness of the lenses cannot be changed.

In order to obtain some new and previously unavailable excellent properties, the surface of the spectacle lens is coated with a single or multi-layer optical film of a certain thickness by physical and chemical methods.

Reinforcement film: also known as hard film, is a layer of metal oxide with a refractive index similar to that of the lens.

A coating layer mixed with a coupling agent. It has the characteristics of high hardness, high adhesion and high light transmittance, which can effectively improve the wear resistance of the lens, not easy to peel off and yellow, and greatly improve the service life of the lens.

Anti-reflective coating. It is also called anti-reflection coating.

It makes use of the interference of light.

The principle is to interfere with the light reflected back through both sides of the film, thereby canceling each other out, reducing or eliminating the light reflection of the lens, thereby improving the light transmittance of the lens.

In general, it is difficult to achieve the ideal anti-reflection effect by using a single-layer anti-reflective coating, because a layer of anti-reflective coating only has a counter-reflection effect on the light in a certain band, and double-layer, three-layer or even more layers of anti-reflective film are often used to improve visible light.

Full-band anti-reflection effect, resulting in more transparent lenses.

If you want the lens to be thinner, you can customize the lens with a high refractive index, of course, the higher the refractive index, the thinner the lens, the thinning treatment you said should be to re-grind the edge, but too much thinning will affect comfort and beauty; The second is to choose a frame with little difference between the heart distance and the interpupillary distance, so that the lenses are relatively thin.

The thick edges can be thinned, and it looks thinner from the side, but the front will look obvious marks, and it will be better after polishing, but the heaviness of the lenses cannot be changed.

Glasses with a high degree of myopia can also be very thin, mainly with the right method and lenses, so that they can be more comfortable to wear.

1.The use of different materials, ultra-thin lenses and ordinary materials are mainly different materials, and ultra-thin lenses will be added to the tiO2, the refractive index of ultra-thin lenses with different refractive indexes will be relatively high, which can generally improve the random taking. 3.

The difference in diopter is that the surface reflectivity of ultra-thin lenses is higher, and the diopter of ultra-thin lenses is one-third thinner than that of ordinary lenses. 4.Different ultra-thin lenses have so many advantages, and it's also going to be more expensive.

Ultra-thin lenses are suitable for people who have myopia, and they can wear ultra-thin lenses and look more beautiful. However, because ultra-thin lenses are easy to break, if it is a high-intensity outdoor exercise or a workplace, it is not recommended that you wear ultra-thin lenses

1. The lens is thin.

2. Myopia can be divided into light, medium and high myopia according to the degree, and the myopia degree greater than 600 degrees is called high myopia. Ultra-thin lenses currently refer to lenses made of high refractive index materials, which have the advantage of being lighter, thinner, and more comfortable. Glass materials are made by adding lead-containing heavy metal oxides to increase the density of the material and increase the refractive index; Plastic lenses are used to increase the refractive index by changing the molecular structure of the material.

First of all, it depends on the material of your lens, the glass is still resin, and the refractive index of the lens, the higher the refractive index value, the thinner the lens (at the same power)!

At the same refractive index and the same power, glass is thinner than resin, which is calculated only in terms of thin thickness! Other aspects have their own advantages and disadvantages...

It also depends on whether it is myopia, astigmatism or farsightedness, and the myopia lens is thicker the periphery, so the larger the frame, the thicker the spectacle lens; The axis of astigmatism also affects the thickness of the lens; Farsighted lenses are thinner the periphery, so the larger the frame, the thinner the lenses! (If the frame does not exceed the diameter of the lens).

Finally, there is the shape of the frame, which looks slightly thinner and more vertical when made of rounded or oval glasses; Square or irregular edges and corners will show thicker lenses!

If the prescription is relatively high, you can choose glasses with a plate frame under the premise of aesthetics, and the wider sides can cover part of the thickness of the lens!

The same person, choose myopia lenses with the same refractive index, of course, the larger the frame, the thicker the edge of the lens!

What lenses to look at, if it is myopia, the opposite of presbyopia.