The sun shines right overhead, so on large streets and small lanes there are more and more people wearing sunglasses. Certainly, as a health product of visual acuity, the sunglasses can prevent the intensive stimulation to human eyes of sunlight. As the improvement of people’s material and cultural levels, sunglasses which could be considered as special ornaments for beauty and showing one’s personality are also being accepted and loved by people. However, ophthalmologists warn you that:”Not everyone is suitable to wear sunglasses, in addition, many people show a lack of knowledge when selecting sunglasses, your eyes are likely to be injured if the sunglasses are not suitable.”
Sunglasses are sold on large streets and small lanes:walking on the steets, you can see all kinds of sunglasses full of large and small stalls and they are many times cheaper than those sold in special sunglass stores. Among them, there is a kind of sunglasses that originated from the 1960s and 1970s. They have super large frames and fashionable designs and are classic as well. They are popular around the world and loved deeply by the consumers. However, few people can realize that except cheapness such sunglasses do no benefits to eyes and even do harm to the eyes. The majority of the people who wears short-sighted glasses will buy their glasses in the standard eyeglasses stores. However, as for sunglasses, many people allocate them as “adornments”. So they always opt for the fashionable design and appealing appearance regardless of optical shops or small boutique or even the stall with goods spread out on the ground for sale. For many people, brand glasses are really expensive. So someone choose to buy sunglasses on the Internet. In general conditions, the standard on-line shops can provide products whose qualities are guaranteed.
Glaucoma patients are not suitable to wear sunglasses, ” improperly selected and poor-quality sunglasses are highly likely to do harm to eyes.” Numerous eye experts state that glaucoma patients or persons with suspected glaucoma are not suitable to wear sunglasses. As soon as glaucomatous patients wear sunglasses, the visible light coming into the eyes decreases which is easy to cause acute about angle-closure glaucoma. Meanwhile, experts remind everyone, some people wear sunglasses regardless of time and occasion, outdoors and indoors, strong and weak sun light and even at dusk, in evenings or in the course of watching TV. It will aggravate the burden of the eyes and cause tonus of ocular muscles, blur visual sense and even dizzy and not able to watching for a long time in a more serious condition.
In addition, children under six whose visual performances are not fully developed are not suitable to wear sunglasses. Because if children wear sunglasses for a long time, the macular area below the eyes couldn’t be stipulated effectively which would influence the development of visual sense and it could even cause amblyopia. If the children have to fend UV because they have many outdoor activities, people can consult oculists for notes for children wearing sunglasses.
Sunglasses of bad quality can not prevent the harm of UV: experts believe that some sunglasses labeled “anti-UV” on the market actually don’t have anti-UV function. Therefore, we have to buy sunglasses in regular shops, in order to choose the sunglasses which are produced by regular manufactures of good credit, and the sunglasses can prevent UV. At the same time, the lenses must be smooth and has no bubbles and scatches.
When the eyes receive the strong light, the human body have the instinct reaction of protection. The pupil will naturally narrow to reduce the energy of ultra-violet ray falling into the eyes. If you wear sunglasses with no anti-UV function, your pupils will become larger instead; The sunglasses can not resist UV and instead a large amount of UV will inject into eyes, doing great harm to your eyes. Eye doctors say that shoddy lens can also lead to symptoms like sickness, short memory, and insomnia and so on.