Glasses of learning: Five Methods sunglasses

Wear or remove glasses usually have a slight movement can be avoided frame deformation thus affecting the wearing effect. Fashionable Buy sunglasses online wholesale when removing the lens upwards or sideways to place or release directly mirror box. Out back, the lens would have Fui Sha generally, do not rush to wipe with a lens cloth should be washed with water and then gently wipe the lens extended life.
Five Methods glasses
① with prescription glasses (far, myopia, astigmatism, presbyopia). The distance from the cornea, the lens should be 12 mm. Wearing too tight or too loose will affect the role of glasses, which affects vision.
② beginning of wearing glasses. Often need to wear, when to wear reading, especially if not wearing a mild myopia can promote the development of myopia speed.
③ high myopia who wear the new glasses more than a year, Online Gucci sunglasses for men discount 'to go to the hospital to increase the degree of replacement of glasses. Because high myopia big glasses first time in order to prevent abnormal sensations are able to adapt to a small degree from the beginning, do not every couple of years does not change, it will give the faster pace of development of myopia.
④ reading glasses and bifocals. Reading glasses are a near mirror, so reading timekeeping. Should mirror downward shift 4 mm. Bifocal glasses, lenses are far above, and far down when the lenses to 3-5 mm, so that the line of sight through the optical center of the lens far to see clearly. If the reading is required to wear a mirror, so that the line of sight right through the center of the lens near by.
⑤ color glasses. Regardless of whether the diopter only the best in the outdoor wear, Wholesale Sport sunglasses Cheap indoor and dark environments do not wear.