Municipal consumer protection Commission introduced that the hot summer to prevent UV damage to the eyes. So, how to pick a pair of quality sunglasses near me now? How to use and maintain sunglasses? See ↓ for more details
Lens selection
The strength of the UV protection sunglasses have nothing to do with the depth of the lens color. When buying sunglasses, pay attention to whether there are corresponding markers that block UV rays.
UV index: For sunglasses, UV index is the effect of filtering ultraviolet rays, and the UV index of most sunglasses is between 96% and 98%.
The lens is marked with UV400 or 100% : after special processing, it can completely block all ultraviolet rays with wavelengths less than 380nm, which can give our eyes full protection.
Nearsighted sunglasses
Nearsighted sunglasses are made by dyeing the lenses with a certain degree through a special process. At present, the common refractive index of dyed resin lenses are: 1.49, 1.56, 1.60, 1.67 four, the higher the refractive index, the thinner the lens will be.
If the processing and customization of myopia sunglasses are not handled well, the wearer will feel dizzy and unfit, and need to go to a professional store for optometry.
Sunglasses for kids
Frame: Must not have sharp edges, otherwise the child may hurt himself when playing.
Lenses: For safety reasons, shatter-resistant resin lenses should be used, as well as UV400 resistant lenses.
Amblyopia children and infants too small should not wear sunglasses, the best protection for infants is a wide-brimmed hat.
Polarized lens
Polarized lens is a special lens, which can reduce the glare caused by asphalt roads, glass walls, water and snow, and can also eliminate reflection and glare, while improving the contrast of the color of the scene, and has excellent anti-glare ability. Different colors of polarized lenses, each with different characteristics.
Gray or dark green: can retain the most natural original color when viewing objects.
Brown or brown: can enhance the color contrast, is the preferred lens when driving.
Amber, yellow or orange: It can be worn on cloudy days for a very clear vision, but it is not suitable for use in the sun.
Light red or vermilion: in the case of strong glare, it can deepen contrast and sharpness, which is very suitable for water and snow activities.
Use and maintenance
Sunglasses are often taken off, the lens is easy to scratch, so when there is a stain on the sun lens, do not pick with your nails, it is easy to scratch the surface.
No matter where you store your sunglasses, remember to keep the mirror facing up.
Drivers often put sunglasses on the dashboard or on the seat, which is a very bad habit. Sunglasses will be deformed by hot weather baking, especially plastic frames, it is best to take off the car, or collection in the glasses box.
