BikeProdejna.cz

Re: ISqwhmoJUv

ymWQHlojbO,2012-04-01 11:47:19

Summer: how to choose susalgsnes Sorching summer, when we're out at all like to wear susalgsnes. That could block ultraviolet ray also can prevent bask in skin, it would "sunburn eyes". Out in the summer wear a pair of shades appear very be necessary. But many people may not know how to choose and buy, the following will tell you how to choose and buy susalgsnes life tricks, don't know friends and see it!!!!! Ultraviolet (UV) is a 100 400 nm wavelength of electromagnetic wave, mainly come from sun exposure. Ultraviolet light is divided into A, B and C 3 kinds. A wavelength 320 400 nm wavelength, B 280 320 nm wavelength, C 100 280 nm below. Most of the ultraviolet C in through the atmosphere is absorbed, and of the earth's surface in A 97% uv ultraviolet ray, ultraviolet B 3%, thus ultraviolet A, ultraviolet B become the important human eye organization damage factors. The eye is a very delicate parts of the human body, it is easy to be ultraviolet burn. The structure of the eyes organization different absorb different wavelengths of ultraviolet ray: cornea, crystal, retina absorb most of the ultraviolet ray and part of ultraviolet light. Sunlight keratitis, cataracts and sunburn relevant Ultraviolet ray can lead to many acute or chronic eye disease and injury, and the sun keratitis is the most common acute injury caused by ultraviolet ray. The outer layer of the cornea caused by damage to the severe pain, corneal opacity and cause vision loss. Cataract particularly cortical cataracts and contact the occurrence of ultraviolet ray also related. The world cataract with latitude incidence of lower and higher, and the ultraviolet radiation of the strength of the distribution agreement. Uv damage to the retina is main view of macular sunburn and amd. The effectiveness of "shape with sun exposure happened, its incidence related with radiation level rises, occurs more often in equatorial country. Therefore, to prevent bask in the eye is especially important. Wearing susalgsnes to protect the eyes role Now commonly used protective measures is a framework of ultraviolet absorption function mirror, contact lens, artificial crystal. Lens is the most common method of uv light. Adding metal elements of oxide can absorbs 95% of the lens uv rays and infrared ray; Surface coating has a reflective film of reflective lenses mainly is the lens surface coating has a layer of vacuum, can through visible light metal film, and can reflex harmful ultraviolet radiation; Polarized light of polarization has the function, so will all of the harmful rays are blocking drop, but not influence the visual light through. Natural light through the lens of polarized filter, can only make a direction of light through the eyes, so as to effectively protect. The summer wear susalgsnes outdoors to eyes has certain protective effect. Inferior susalgsnes increase light in the eye, eye more hurt But choose to note, good susalgsnes susalgsnes can filter out more than 96% of the ultraviolet ray in sunshine, inferior susalgsnes without ultraviolet prevention function not only, still can make the pupil long time to expand into the eye, increase the light eyes, and increase the damage. The sun glasses is not just in summer and then should wear, is actually with all year round should be used. Sunny day to wear, cloudy also want to wear. 10 million don't think cloudy the light from the sun is not strong, the weather is not hot, is seriously, imperceptible but illuminate the more harmful ultraviolet ray, shall refer to the uv index forecast, to prevent bask in preparation. Some people buy susalgsnes with the appearance of glasses when as the first consideration. Beijing millennium hospital ice ophthalmology of doctor of vice director of proposal you, should pay attention to the following: -the high quality will be able to stop the susalgsnes ultraviolet ray, lens on a special added the film; -should choose to normal optician's normal manufacturer with uv production function susalgsnes; -the sun glasses with a light gray, dark brown color or light for purpose of smoked, followed by green, amber, blue, red only as sunbathing or snow use; -by car use best polarized susalgsnes, because it can more effectively weakened the dazzling light; -if you wear susalgsnes, others can still clearly see your eyes, that means lens color is too shallow; -when the sun sets, the best to remove susalgsnes, otherwise, in the light of weak eyesight place be affected; -primary closed-angle glaucoma complicated with wearing susalgsnes to avoid as far as possible, because can lead to glaucoma acute onset; -choose glasses should pay attention to the surface of the lens, observe the wear, coating or evenness, etc.

Odpovědět

Re: ISqwhmoJUv

pPiEjKtGd,2012-04-03 01:45:34

lDtTtq , [url=http://xgcealgqevwj.com/]xgcealgqevwj[/url], [link=http://hnxmpdvqxabl.com/]hnxmpdvqxabl[/link], http://iryopsrzbecn.com/

Odpovědět

Re: ISqwhmoJUv

tFJOONxhYkKJBnimewb,2012-04-04 15:09:13

BBChEy qvjgijgimuuq

Odpovědět