Summer sun glasses five Note
The eyes are extremely delicate organs in the human body, are susceptible to UV damage. Harmful ultraviolet light is the killer of eye health, can cause keratitis, macular damage, cataracts and other eye diseases. World Health Organization data show that over two million cases of cataract in the world is due to the sun due to long-term exposure. The heat of the summer of 2013, in order to avoid eye "sunburn", through qualified sunglasses on sale select a suitable sunglasses is very necessary. However, Sunglassesstock.com experts remind you that not everyone is fit to wear sunglasses, sunglasses choice very knowledgeable. More important is the selection of qualified products should be in the business for many years cheap sunglasses stock website.
1，UV not wear sunglasses that not all colored lenses called sunglasses. Sunglasses should have the logo of the anti-ultraviolet (UV), anti-UV factor in more than 400 of the lens, it has the role of eye protection. It is worth noting that the selected poor quality sunglasses that block ultraviolet worse than not wearing sunglasses, and more likely to cause damage to the eyes. Because this sunglasses can block some of the light, but fail to do so ultraviolet light. To wear, the pupil will expand, UV easier access to the eyes, damage to the eyes.
2, Glaucoma patients should not wear sunglasses wearing sunglasses reduce visible light entering the eye, the pupil will naturally turn up. Such changes in the pupil not affect healthy people, but patients with glaucoma, but it is a threat, are likely to cause acute glaucoma, a jealous eye pain, headache, sharp decline in vision, nausea, vomiting and other symptoms. Therefore, in patients with glaucoma or suspected glaucoma, should not wear sunglasses.
3，Not suitable for children under the age of 3,6 wearing sun glasses for children under 6 years development of visual function for a long time has not yet reached normal levels. Sun glasses for a long time, reducing the light entering the eye, macular area can not be effective stimulation of light, it will affect the visual development. Serious, but also may lead to amblyopia. Therefore, children under 6 years of age should not be prolonged sun glasses.
4, edge width, frame thickness, heavy weight sunglasses do not wear long wearing edge width, frame thick, heavy weight sunglasses can easily lead to "sunglasses syndrome". The syndrome patients were mostly young people jump on the bandwagon. Typically, patients in the continuous wearing these sunglasses after 1-2 weeks, there will be such as nasal discomfort (as suffering from a cold), I feel the face bug crawling ", gingival numbness, upper incisors discomfort, eye acid swelling and other symptoms. This is mainly due to the thick frame, broad-brimmed, heavy weight sunglasses oppression facial trigeminal nerve.
5, do not need to wear, and resolutely do not wear some people, regardless of time and place, whether indoors or outdoors, sunny or cloudy, even in the evening, watching TV, watching movies, wearing sunglasses. In fact, this approach seems to be "cool", will increase the burden on the eyes, is apt to cause eye muscle tension, blurred vision, dizziness and other symptoms of visual fatigue.