Low-quality sunglasses, but more eye injuries

When light strongly, such as people in the middle of the beach, or go skiing, sea water, the snow in strong sunlight will be reflected into the eyes, will cause some adverse effects to human eyes, so when selecting Cheap Oakleys sunglasses, must identify their product Hangtags identified, selected according to different use functions, but by no means can buy three products-free.
Sunglasses can block UV rays, is added a special coating on the lenses. Good quality sunglasses, strong ability to block UV rays, light transmission drop of it few, do not affect the General clarity of vision, surfaces are easy to wear. If no UV feature is wearing tinted glasses, wore a more dangerous than not wear.
Experts said the choice of sunglasses cannot simply consider beautiful, plastic and Crystal lenses were unable to effectively block UV rays. Optical media is ideal for glass lenses block UV rays, is common, transparent optical lenses, can block the ultraviolet rays of 85% and effectiveness of colored optical glass lenses block UV rays, best in Brown, black, gray, followed by blue-green, red.
Because sunshine rays relatively strongly in the summer, light sunglasses while poor filtration, some recommendations may be appropriate to select the dark sunglasses, is better in dark gray, dark brown and black second. If possible, the selection of sunglasses you can consult ophthalmologist before buying sunglasses best selection professional optical shop.
Sunglasses are not the right fit. Glaucoma is not suitable for wearing sunglasses. Because sunglasses diminished light, patients in order to be able to see clearly those pupils were forced to enlarge, the already high intraocular pressure in patients with glaucoma increase further, leading to deterioration, jealous, vomiting can occur in patients with systemic symptoms, or even blindness. Patients with glaucoma or who have a family history of glaucoma should not wear sunglasses.
In addition, the child is at a critical period of Visual development, need clear stimulus to promote the image of the eye of Visual development, wear sunglasses too long or have adverse effects on Visual development. General go out during the summer, parents for children wear a wide eaves hat or umbrella Sun. If you are traveling or are unable to avoid outdoor activities, wear dark glasses to protect his eyes were not a bad idea, but note not that long. If you are in an environment that is not very strong UV radiation, it should remind the kids pick sunglasses.
Wearing sunglasses can actually reduce UV damage to the eyes, but if you choose and worn properly, will also hurt the eyes, strain your eyes. It is understood that some people without distinction as to time or place, whether outdoors or indoors, regardless of sunlight intensity, even in the evening, as well as in the movies, in the evening when television wearing sunglasses. Doing so would increase the burden of the eye, causing eye muscle tension, blurring of vision, severe symptoms such as dizziness, not long as also appears. Experts caution that sunglasses wear time should not be too long. Wearing thick Oakley Sunglasses Cheap, while wide, component, often under the oppression of orbital, with the mirror extension of time, local skin numbness, dull appears around the eyes, fatigue and other symptoms.