In the myopic glasses when Fake Oakleys Frogskins Sunglasses Cheap for Sale lenses are to a large extent affects the eyes a future vision, will also have protective effects to the eyes, it should be how to choose lenses? According to the basic material of the lens, and other factors to choose lenses. Methods/procedures When choosing a lens, taking into account the degree of applicability and suitability factors such as myself, to choose the right lens. Selecting glasses to four: Seeing glasses whether made glasses production permit; Two optical corporate optometry equipment and testing equipment has conformity mark; Three, optometry, producers are in charge; Four glasses without a tag (). Lens material: Cheap Ray Bans Wayfarer Sunglasses Outlet Sale glass lens; resin lens; PC lenses; Glass lens refractive stability, good resistance to abrasion, optical performance, but heavy, easily breakable. Glass lens: refractive stability, good resistance to abrasion, optical performance, but heavy, easily breakable. Tree Resin lenses (CR-39): light, safe, and high rate of transmission, is not easy to break, but easy to wear. PC lenses: high refractive index, sturdy, but easy to wear. Select lenses for accurate eye test: Best choice of hospital or optometry is big glasses shop. Eyeglasses for the first time, and if you are under 35 years of age, the Mydriatic refractometry. Old people should wear Cheap Mac Cosmetics Makeup wholesale Outlet glasses optometry, not freeloaders from its buy mirrors so as not to cause damage to the eyes. After the optometry, consumer 15-30-minute exam, myopia, hypermetropia wearers should Dai Jing to take walks, up and down the stairs; reading glasses wearers should read, reading a newspaper. If feeling unwell, and optometry staff, please adjust the lenses in a timely manner, until satisfied. Buy high myopia lenses of high refractive index n=1.70, 1.80 or 1.90 (this refers to glass lenses. Resin glasses tablets currently Supreme refraction rate is 1.74), to reduced lenses of thickness, and should not be purchase discoloration lenses; children should be purchase optical resin lenses, to guarantee wearing of security; general myopia patients should be distribution slightly red of optical red tablets or slightly blue purple of optical can Division tablets, to guarantee blocking most UV on people eye of against; water Shang job who selection Tiffany and Co Key Necklace Jewelry Outlet polarization King tablets. To increase light transmission and improve visual clarity, plus optional film lenses.