u003cbru003eIn recent years,
glasses.com/sunglasses-1.html' target='_blank'>sunglasses with different colors and styles have been favored by fashionable men and women, not only to protect the eyes, but also as decorative accessories. However, it should be noted that not everyone is suitable for wearing sun
glasses, and the purchase of
sunglasses is very knowledgeable, and improper selection and wearing are likely to cause damage to the eyes.
Sunglasses should not be worn under the following conditions 1. Sunglasses should not be worn for glaucoma. After wearing sunglasses, the visible light entering the eyes will decrease, and the pupils will naturally expand, resulting in a narrow anterior chamber angle and poor drainage of aqueous humor. Over time, it is easy to induce acute onset of angle-closure glaucoma, redness, eye pain, headache, sharp decline in vision, and even systemic symptoms such as nausea and vomiting. Therefore, people with glaucoma or suspected of having glaucoma should not wear sunglasses. 2. Sunglasses are not suitable for places with low light. Some people wear sunglasses regardless of time and occasion, whether outdoors or indoors, regardless of the intensity of the sun, and even at dusk, evening, and when watching movies or TV. Doing so will increase the burden on the eyes, cause tension in the eye muscles, blurred vision, and in severe cases, symptoms such as dizziness and inability to see for a long time, visual fatigue. Children under 3 or 6 years old should not wear sunglasses. The visual function of children under 6 years of age is not yet mature, and wearing sunglasses for a long time will not be able to effectively stimulate the macular area of u200bu200bthe fundus, which will affect the further development of vision and even form amblyopia. 4. Be cautious when wearing large-frame sunglasses. Nowadays, many fashionable young people prefer to wear large-frame sunglasses with wide sides, thick frames and heavy weight. In fact, after wearing these glasses for 1 to 2 weeks, wearers will experience numbness in the eye sockets or between the cheeks. Symptoms such as insensitivity and nasal discomfort when breathing, just like catching a cold. Others felt like small bugs crawling on their faces, numb upper gums, uncomfortable upper incisors, and sore eyes. This is because the human facial sensation is mainly innervated by the trigeminal nerve. The infraorbital branch of the trigeminal nerve penetrates through the infraorbital foramen at the inferior orbital edge. Sunglasses with thick frames, wide edges and heavy weight tend to compress the trigeminal nerve Under the branch, which leads to sunglasses syndrome. The choice of sunglasses is very knowledgeable. There are many selection skills. Experts said that the purchase of sunglasses is very knowledgeable. Improper selection can easily cause damage to the eyes, so you should pay special attention when choosing sunglasses. ●You should go to a regular eyeglass shop and choose sunglasses with anti-ultraviolet function produced by a regular manufacturer. The glasses sold by street stalls and hawkers often fail to meet the UV protection standards, so don't buy them. ●When choosing, pay attention to the surface of the lens to be smooth, without ripples, flaws, bubbles, and wear marks. Lay the lens flat and observe whether the lens is warped from the horizontal direction. Lenses with unevenness, marks or bubbles are not suitable for purchase. ●The color of the lens should be selected based on the principle that the color of the surrounding environment is not distorted after being put on, the edge of the object is clear, and the signal lights of different colors can be effectively identified. The choice of the shade of the lens color should be determined by the venue, generally a medium depth is better, such as light gray, light brown, light green, etc., sunglasses of these colors absorb infrared and ultraviolet rays better. Of course, if a strong shading effect is required, darker lenses should be selected. But cyclists or motorists cannot choose too dark lenses, otherwise they cannot effectively identify traffic lights of different colors. In addition, when buying sunglasses, you have to consider the matching relationship with eye size, face shape, eyebrows, and nose. Generally, people with big eyes should choose sunglasses with large frames, and those with smaller eyes should choose sunglasses with smaller frames; people with a fat and round face are suitable for sunglasses with a thick frame, and people with a thin face are suitable for sunglasses with a round frame, flat round People with a face should choose sunglasses with a slightly narrower square frame at the top and bottom. Of course, if you face the computer every day, you can also choose sunglasses with anti-radiation glasses.
Wow, this sounds like a bit of a cruel question, but it is a vitally important question to ask yourself if you are struggling with your oem sunglasses and you would like to stop the custom eyeglasses problem.
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