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Sunglasses, "5 not to wear"

Human eyes are extremely delicate organ, is vulnerable to UV damage. The harmful ultraviolet light waves is the eye health of the killers, can cause keratitis, macular retinal damage, cataracts and other eye diseases. World Health Organization, a data show that worldwide more than 2 million cases of cataract is due to the long-term exposure caused by the sun. Heat of the summer, in order to avoid the eyes "sunburn", select a suitable sun glasses are very necessary. However, medical experts remind everyone that not everyone is suited to wearing sun glasses, sunglasses the choice of useful knowledge.

1, no UV features do not wear sunglasses that not all colored lenses all call sunglasses. Sunglasses should be UV (UV) logo, anti-UV factor of more than 400 lenses that have the effect of eye protection. It is noteworthy that, choose the function with no low-quality UV-blocking sunglasses, even worse than not wearing sunglasses, but also easily lead to eye damage. Because this part of the sunglasses can block light, but fail to do so the UV. Were wearing, the pupil will be expanded, ultraviolet easier to enter the eye, right eye hurt.

2, glaucoma patients should not be wearing sun glasses sun glasses into the eyes of the visible reduction in the pupil will naturally open big. This change in the pupil of the healthy people without problems, but for glaucoma patients, it is a threat, likely to cause acute glaucoma, there jealous, eye pain, headache, sharp decline in vision, nausea, vomiting and other symptoms. Therefore, patients with glaucoma or suspected glaucoma who should not wear sunglasses.

Not suitable for children under the age of 3,6 prolonged sun glasses 6 for children under the age of visual function development has not yet reached normal levels. If a long time wearing sunglasses to reduce light entering the eye, retinal macular area can not be an effective stimulus of light, will affect their visual development. Worse still, could lead to amblyopia. Therefore, a long time not suitable for children under 6 years old wearing sunglasses.

4, edge width, frame thickness, weight weight does not wear sunglasses while wearing a long width, frame thickness, weight heavy sun glasses, is apt to cause "sun glasses syndrome." The syndrome mostly fashionable young man. Typically, such patients wearing sunglasses in a row after 1-2 weeks, there will be such as nasal discomfort (like a cold), feeling "there are insects crawling over his face," upper gums, numbness, discomfort on the front teeth, eyes acid inflation and other symptoms. This is mainly due to thick frame, broad-brimmed, sun glasses heavy weight of oppression caused by facial trigeminal nerve.

5, no wear, when determined not to wear some people, regardless of time and place, whether outdoors or indoors, sunny or cloudy, even in the evening, watching TV, watching movies, also wearing sunglasses. In fact, this seemingly "smart" approach will increase the burden on the eye, is apt to cause ocular tension, blurred vision, dizziness, blurred vision and other symptoms of visual fatigue.

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