Advantages:

1. Light weight.

2. Not easy to break: In case the lens is broken, not only will there be less fragmentation, but also less sharp, which can minimize the damage of the eyeball and face. This is the main reason for the "safety lens" on the market.

3. Can be dyed: The resin lens is easy to dye, and can be appropriately matched with clothing and fashion.

4. It can block ultraviolet rays: almost completely block ultraviolet rays with a wavelength below 350mm, and the effect is far better than glass lenses.

5. Strong anti-fogging: Because the thermal conductivity of resin lenses is lower than that of glass, it is not easy to be blurred due to steam and hot water, and even if it is blurred, it will quickly disappear.

6. Can prevent dents: Generally, high-heat and small-volume substances are easy to cause dents and spots on the glass sheet, but if it touches the resin lens, it will automatically bounce off without causing any marks on the surface of the lens.

7. The surface reflection of the resin lens is lower than that of ordinary glass, and it is also less glare.

8. The resin bifocal lens has no chromatic aberration. This is due to the integral structure of the resin bifocal lens, so it has less chromatic aberration than the fused glass bifocal lens.

9. The light transmittance of resin lens is as high as 92%, which is more than 2% higher than ordinary glass.

10. The resin lens has a wide range of resistance to chemicals and solvents. Almost all household solvents and chemicals will not affect or damage it.

2. Disadvantages:

1. Easy to scratch: The scratch resistance of resin lens is worse than glass lens, but it can be improved by surface hardening treatment, but the effect is limited.

2. Thicker than glass lenses: It is human nature to love beauty. Too thick lenses are very unsightly, and those with deep myopia are even more daunting. Although there have been great improvements recently, it is still much thicker than glass lenses.

3. Deformation is easy to occur when framing: This is because the density of plastic lenses is lower than that of glass lenses.

4. Not resistant to high temperature: Although the resin is a thermosetting material, once the multilayer film is coated, the surface of the multilayer film may crack due to high temperature.