There are several types of resin myopia lenses, how to choose resin lenses?

Hello, I think your situation should be that the lens is worn large, and it is forced into the frame to deform the lens.

If you wear ordinary monofocal plastic lenses, such a slight deformation will not affect the normal wearing and use, but you say that it is "the kind of new functional glasses with decreasing power from top to bottom", it is estimated that it is a progressive multifocal for teenagers.

Lenses, this kind of lenses are generally aspherical design, with more than a thousand focal points, require a strict optometry process, and professional grinding skills, if the error is large, it will lose the function of mitigating the increase in power, and your lenses.

It has been deformed, and the curvature of the lens is relatively incomplete, losing the meaning of progressive polyfocal.

Suggestion: Go to the glasses store and let the technician help you re-polish, you must be a master, because re-polishing is hand grinding, novices are generally hand-born, grinding out like a mouse, your lenses have only been matched for a month, and they can be corrected.

Hand-played, remember!

The resin itself is colorless or light yellow, not white.

Colored plastic lenses are dyed and can be made into a wide range of colors.

After dyeing, only the corresponding wavelength of light can pass through the glasses, resulting in a decrease in light transmittance and eye fatigue.

Trachoma itself has nothing to do with glasses, but this colored plastic lens can make it aggravated.

Blue is usually a coating that only comes from wearing glasses at an early age.

There are very few blue films now.

At present, there are generally green films on the market, purple films, and very ** films.

Green film is more common and widely used by many people.

**Membrane is relatively more classy.

The purple film is more individual.

Your situation has nothing to do with coatings.

Generally, the coating only improves light transmittance, anti-fatigue and aesthetics.

It is reflected green in the light.

When you wear it, you will actually feel the same with any coating.

Only when you take it off does you feel the difference.

It is recommended that you get your eyes checked out.

There may be some other eye irritation that is causing you to do this.

As you said, you have trachoma.

Other eye conditions may be caused.

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Problem description: Is it true that the clerk said that the red film is better than the green film?

Analysis: If you want to wear a pair of suitable and comfortable glasses, choosing the right lenses is an indispensable part, but how much do you know about lenses? This article will briefly introduce the characteristics of plastic lenses to help you choose a good pair of glasses that can be seen easily.

Optical properties of plastic lenses:

1.The surface gloss and smoothness of plastic lenses are in no way inferior to those of ordinary glass lenses.

2.The refractive index of plastic lenses is lower than that of ordinary glass lenses, so plastic lenses of the same power are thicker.

3.The dispersion of plastic lenses is very similar to that of glass lenses.

4.The see-through rate of plastic lenses is 92%, which is more than 2% higher than that of ordinary glass lenses.

5.The surface reflection of plastic lenses is lower than that of ordinary glass lenses, and they are less dazzling, which is due to their higher light transmittance and lower refractive index.

6.The bifocal lenses of plastic lenses are composed of a single piece, not made of fusion like ordinary glass bifocal lenses, so there is no chromatic aberration and early bending of plastic bifocal lenses.

7.The optical properties of plastic lenses are extremely stable and do not change at high or low temperatures.

Mechanical properties of plastic lenses:

1.Plastic lenses can be cast into a wide range of shapes with high transparency and optical requirements.

2.Plastic lenses are easier to frame than regular glass lenses.

3.Plastic lenses are easy to dye and can be dyed into a variety of colored lenses with different light transmittance as needed.

Physical properties of plastic lenses:

1.Plastic lenses are lightweight, and their weight is only half that of regular glass lenses.

2.Plastic lenses are particularly impact-resistant.

3.When the resin lens is shattered by impact, there are fewer fragments, and the fragmentation area is large and blunt; Minimise injuries to the eyes and face.

4.Even after long-term use, the surface of the plastic lens is not prone to breakage.

5.Plastic lenses have strong impact resistance to high-temperature, small-sized objects, and when such objects hit the plastic lenses, they will immediately bounce off; It is not like ordinary glass lenses, which can easily cause dents and spots. Therefore, when welding or using grinding wheels, plastic lenses can be used to protect the eyes from flying fire dust.

6.Because plastic lenses have low thermal conductivity, they have better anti-fogging properties than conventional lenses.

Chemical properties of plastic lenses: Sleepiness.

1.Plastic lenses are resistant to chemicals and chemical solvents in a wide range. With the current household chemicals and chemical solvents, almost no harm will be caused to plastic lenses.

2.Plastic lenses have low thermal conductivity, and when heated, they have extremely high heat resistance, and are not prone to bending and torsion deformation at a certain high temperature.

Due to the above characteristics, plastic lenses have gradually replaced glass lenses in recent years. Only boring.