In order to be cool to wear the wrong sunglasses too hurt eyes

The summer sun, a pair of sunglasses not only help you to keep the dazzling sunlight, uv protection, more can instantly improve your temperament and aura, modern degree helicopter. Recommended reading: choose the sun glasses have asked the university sunglasses role is one of the main filter ultraviolet light. Too much in the sun's ultraviolet ( UV） Exposure can cause cataracts, pterygium, eyelids and electro-optic eye inflammation diseases such as skin cancer. Even wearing a hat along wide, also can block ultraviolet (uv) of 50% to the eye, so you also need to wear sunglasses. Dazzling sunshine makes eyes uncomfortable, depending on the impact of clarity, people will squint, shed tears. Wear sunglasses, comfort level will increase greatly. In addition, sunglasses can also improve the dark adaptation. If you don't wear sunglasses, in the bright sunlight for 2 ~ 3 hours later, the people to the dark environment ( Such as tunnel) Adaptability will reduce, thus bring safe hidden trouble. Sunglasses improper wear easily induced what disease can cause visual fatigue surface is not smooth, color uneven inferior sunglasses can easily cause visual fatigue. Others regardless of time and place, no matter the light strong or weak, even in films and TV also wearing sunglasses. Do this increase burden of eye, eye muscle caused by complexity and can't long wait for a symptom. Can cause more sunglasses syndrome with sunglasses syndrome in the fashionable young people, they're loved edge width, thickness, weight heavy large frame sunglasses. Wear after 1 ~ 2 weeks in a row, can appear the eye socket or between two cheek numbness, perception of slow wait for a symptom, have nasal breathing discomfort feeling, like had a cold. There are those who feel like there's little bugs crawling on the face, upper gum numb, front teeth feel discomfort, eyes acid bilges. This is due to the thick, wide edge, weight heavy sunglasses often oppression under the orbital branch of trigeminal nerve, thus causing the symptoms. If can cause retinal disease with no uv protection function of sunglasses, more dangerous than not wearing sunglasses. Because, the human body have self-protection instincts, eyes in case of strong light, the pupil will naturally become smaller, cut into the eyes of uv energy, once put on unqualified color dark sunglasses, can make the pupil dilation, plus glasses not isolate uv role, then the eye is equal to the portal is big, the invasion of uv energy is greatly increased, the harm of the lens and retina. May induce acute glaucoma if with no uv protection function of sunglasses, more dangerous than not wearing sunglasses. Because, the human body have self-protection instincts, eyes in case of strong light, the pupil will naturally become smaller, cut into the eyes of uv energy, once put on unqualified color dark sunglasses, can make the pupil dilation, plus glasses not isolate uv role, then the eye is equal to the portal is big, the invasion of uv energy is greatly increased, the harm of the lens and retina. May induce acute glaucoma because sunglasses to reduce the intensity of light, will make the pupil increases, if the lens can't prevent ultraviolet ray, more into the eyes of ultraviolet ray, damage to the eyes. Regular brand sunglasses are generally have this functionality, but some inferior sunglasses with a less known and inferior brand is hard to say, so, must not covet is cheap to buy some regular sunglasses. At the same time, because of the high energy shorter wavelength ultraviolet ray, so is the protection key of sunglasses. For uv protection is divided into: 1) Short wavelengths UV380 below; 2) The longer wavelengths Uv400. UV400 protection more fully below, covers the UV380 protection. High-end mirror meter can be quantitative detection for this feature. Lenses must be sighted people no prescription for sighted people, when choosing sunglasses must choose no prescription lenses. Otherwise, will cause eyestrain, impair the health of the eyes. It can use the mirror meter for testing. People with myopia are configurable a BianSeJing ( With degrees) And, of course, can also be equipped with diopter of sunglasses. Lenses all normal twisted the sun glasses will appear this kind of circumstance of the probability is higher than ordinary glasses. This special equipment can be tested, the general store had not tested. So wear a pair of sun glasses if immediately feel dizzy, then no need to buy. The probability of low-end sunglasses appear this kind of circumstance to high. Not by the color of the object distortion especially see traffic lights not distortion, buy can take a test.
related: sunglasses