Sunglasses to choose the appropriate

Summer approaching, oakley sunglasses cheap outdoor work and in turn become a must play one of the menu items. But you know what? If the inappropriate choice of sunglasses, not only will not play the role of UV shielding, there may cause a variety of eye diseases.
If the poor selection of contact lenses, one can increase the incidence of cataracts. Because wearing the sunglasses, the lens transparency serious decline seen in the dark things like eye, the pupil becomes large, will be a substantial residual UV injected into the eye, the eye when it is absorbed by the surface of the corneal tissue, early cause lens density increases, the latter will lead to clouding of the lens and become cataracts.
Second, can induce acute glaucoma. Because after wearing sunglasses, reduce the visible light entering the eye, the pupil will naturally turn, causing the narrow anterior chamber angle, resulting in poor drainage of aqueous humor, a long time, easy to induce acute angle-closure glaucoma.
Third, can lead to amblyopia. Children under 6 years of visual function has not yet mature, wearing sunglasses a long time, macular area cannot be effectively stimulated, will affect the further development of vision, even the formation of amblyopia.
Fourth, can cause visual fatigue. Some people, regardless of time and place, whether outdoors or indoors, regardless of sunlight intensity, even in the twilight, in the evening as well as in movies, television, also wearing discount oakley sunglasses . Doing so will increase the burden on the eyes, causing eye muscle tension, blurred vision, severe dizziness will appear, not for a long time as the other symptoms.
Fifth, can cause sunglasses syndrome. Syndrome is more common in patients’ sunglasses fashionable young people, they prefer to wear edge width, frame thickness, heavy weight large frame sunglasses. Continuous wear these glasses 1 to 2 weeks after the wearer appear between the parts of the orbit or two cheek numbness, perception retardation and other symptoms, nasal discomfort when breathing feel like suffering from a cold. Some people feel like there are bugs crawling on the face, upper gums numbness, discomfort upper incisors, eye soreness.
When buying sunglasses, be sure to go to regular stores and branded eyewear glasses shop for qualified sunglasses. Also, note that block ultraviolet light colored eyes are not necessarily only in the UV lenses another film on the map can be used as sunglasses.
How to identify strengths and weaknesses sunglasses
Sunglasses can judge the merits of both quality and aesthetic look. Aesthetics with individual factors, then there is a certain quality standard. Mainly refers to the quality of the sunglasses lens quality. Currently the world