Do not think that the sun will only damage the skin, if the human eye lens absorbs too much ultraviolet light, it will lead to cataract. At this point, cheap Oakley sunglasses are your best cover. But many people will probably just buy a pair of fake Oakleys on the street. As everyone knows, the sun outside is blocked, but the sun’s ultraviolet rays have caused irreparable damage to the eyes.
In addition to the reputation of the brand of cheap Oakley sunglasses, please also pay attention to whether the lens has anti-UV signs. Generally speaking, a good lens can block more than 99% of the ultraviolet (UVA, UVB). In addition, the color depth is also essential, too deep color will make us unable to see the true colors of the object.
Maintenance
The lens glasses stained with dust or dirt, please do not rub it with dry cloth or paper directly, so as to avoid scratching the lens, instead, clean it with detergent, and then rinse with water and apply paper or cloth to dry it. When you take off your glasses, wrap them in the delicate flannelette and fit them into the glasses box.
Please don’t put the cheap Oakley sunglasses in the high temperature environment so as not to be damaged by heating, especially for the safety lenses. You can brush it with detergent or soap when there is dirt on the nose or corner edge of the frame. Go to the optician’s shop for inspection and maintenance on a regular basis.
Resin lens:
advantages
1. Lightweight
2. Uneasy to break: if the lens is broken, not only fragments are less, and it is much less sharp, which can lower the eye and facial injuries to the minimum; this is why it is called “safe lenses”.
3. It can be dyed: the resin lens easy to dye, and can be matched with the clothes and fashion appropriately.
4. Ultraviolet rays can be blocked: block ultraviolet wavelengths below 350mm almost completely with an effect far better than glass lenses.
5. Strong anti-fogging: The lower thermal conductivity of resin lenses compared to glass makes them resistant to vague and unknown phenomena caused by steam and hot water, and even if they become blurred, they will soon fade.
6. Anti-dent: general material with high fever and small volume are easy to cause dents and spots in the glass, but if for the resin lens, it will automatically open, and will not leave any traces on the surface of the lens.
7. Resin mirror surface reflection is often lower than ordinary glass piece and also less dazzling.
8. Resin double lens does not have chromatic aberration, this is because the resin double optical lens is one piece, and therefore, it has less chromatic aberration than the fused glass.
9. Resin lens transmittance is as high as 92%, which are 2% higher than ordinary glass.
10. Resin lenses discount Oakley sunglasses resist a wide range of chemicals and solvents, and almost all household solvents and chemicals do not affect or impair it.
Shortcomings:
1. Resin lenses on cheap Oakley sunglasses are easy to scratch and have poorer scratch resistance than glass lenses, but surface hardening can improve them, although the effect is limited.
2. Thicker than the glass lenses: human are all born beauty lover, thick lenses are very unsightly. Although it has improved greatly recently, it is still much thicker than glass lenses.
3. The frame is easy to deformed: This is due to the lower density of plastic lenses comparing with glass lenses.
4. Not high temperature-resistance: Although the resin cheap Oakley sunglasses is thermosetting material, it will crack in high temperature once coated with multilayer film.