Sunglasses are still perceived as a fashion accessory, and meanwhile, their importance to the health of the eye is much more important.
Our eyes are very sensitive to external stimuli, and on fine sunny days they have very difficult without additional protection. And it provides a sunglasses . They protect the eyes from the most serious and dangerous stimulus - ultraviolet rays, the activity of which is now, in the spring, growing day by day. Ultraviolet in large doses can cause burns of the retina, damage the cornea and lead to early blindness .
But prevention Blindness - Is not the only feature points. Sunlight makes us involuntarily squint so manifest an ancient protective instinct. The habit of squinting is absorbed quickly and permanently, and in addition to lead to trouble wrinkles . Points make it easy to load and eyes at the same time protect the skin from wrinkles . In addition, they save a person from other possible signs of photo-aging caused by the sun - pigmentation, premature aging.
Wearing winter and / or summer?
There are two points of view wear Sunglasses And each podkrepyaletsya research and conclusions.
And in the winter, too. Some experts believe that the intensity of sunlight during the cold remains high. Snow absorbs dust in the air, whereas it dilutes the dust particles scatter ultraviolet light, making them less hazardous. Thus ultraviolet light becomes more intense, and wear sunglasses in winter it is necessary.
Only when the light! According to other researchers, if you wear sunglasses in winter and summer, it may be photophobia - fear of light, in which even quite normal lighting causes discomfort and pain in the eyes. Therefore, sunglasses unnecessarily is not necessary. Eyes should be accustomed to the light, because nature itself has provided defenses to the eye. And do not wear dark glasses in public transport, in the evening or on cloudy days, as the soft rays of the sun are necessary to our eyes. If a cloudy day to restrict access of daylight to the eyes, the pupils are constantly expanding, and this can lead to violations of the work, and then, after 40 years, and glaucoma.
How to choose glasses
1. Look for sunglasses with a sticker on the lens "UV-PROTECTION" - it confirms the existence of an absolute eye protection.
2. Another sticker on the lenses of sunglasses communicate the contents of percent passing light. Typically, it ranges from 15% to 60%. The higher the percentage, the glass is lighter. The most optimal for wearing glasses with a pass of light 30-40% - very dark eyes Stelka forced overwork. Too bad light protect eyes from sun exposure.
3. The sports models for skiing anti-reflective coating that absorbs glare - "sunbeams" appearing on the lenses. Some manufacturers use it and the classic sunglasses.
4. Another nuance - multicoating. It provides maximum protection of glass complex.
5. If you have problems with your vision, you can choose sunglasses with diopters. They are made to order: you choose a frame and lens to it you made your recipe.
6. On the inexpensive models bow attached cogs or rivets. Rivets preferable - cogs in time is bumped. In luxury frames shackle attached fleksovymi hinges. The fastening is easy to recognize: the bow slightly bend in opposite directions when they are at the other anchorages and locked tightly folded in only one direction. Fixing fleksovymi hinges makes wearing glasses comfortable: bow not drag behind the ears.
Eyewear - Sunglasses "cat's eye"
Fashion for retro optics has resulted in what is now fashionable glasses - It points to the extended areas. Popularity points "cat's eye" It is rapidly gaining momentum, this spring a similar frame - a real hit.
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