4hw.com.cn: many people like wearing sunglasses in summer, which can block the sun's rays from damaging their eyes. What's going on with wearing sunglasses and dizziness? What about wearing sunglasses and dizziness?
How about wearing sunglasses and dizziness
Too large curvature of lens
The cornea of the eyeball of the human body has a certain radian, and the lens of the sunglasses has a certain radian. When the radians of the two are parallel or close to each other, there will be no extra luminosity, which will not cause dizziness. However, when the radians of the sunglasses are too large, wearing them in front of the glasses will lead to extra diopter, which will lead to dizziness Shape. Therefore, it is better not to choose Sunglasses with too large curvature.
Wrong wearing method
Sunglasses can shade the sun. After wearing sunglasses, the human body will reduce the entry of light transmittance, and the pupil will expand naturally. If you still wear sunglasses in the place with insufficient light, you will increase the adjustment of the eyes. The eyes are easy to fatigue. Wearing sunglasses for a long time will aggravate the fatigue of the eyes, and the human body will feel dizzy. Therefore, it's best to remove sunglasses indoors or in the shade, and wear sunglasses for a short time, so as to relieve dizziness.
Excessive degree
When myopic patients purchase sunglasses for myopia, the degree of glasses is higher than their actual degree due to the inaccuracy of optometry, which will also make people feel dizzy. Therefore, accurate optometry is necessary for people who wear nearsighted sunglasses.
Mirror foot too tight
If the temple board of sunglasses is too tight, the part of the nose bracket will feel uncomfortable, which will produce a sense of pressure. In this case, the human body will also feel dizzy. We only need to loosen the screws at the junction of the leg and the frame of the glasses.
Unqualified lens
If the lenses of sunglasses are unqualified, the diopter will exceed the standard, or the surface of the lenses is not smooth, or even bubbles and other phenomena will appear. When the eyes look at the external objects, they will produce distortion and deformation, which will make the eyeballs sore, resulting in dizziness, eyesight, nausea, loss of appetite, forgetfulness, insomnia and other visual fatigue symptoms. Therefore, in order to prevent dizziness, it is best to buy Sunglasses from professional optical glasses stores and regular stores.
What to do with wearing sunglasses and dizziness
1. Choose the right sunglasses. If the lens is not suitable or the foot plate of the mirror is too tight, it will easily cause dizziness.
2. Wear sunglasses correctly. Wrong wearing may cause discomfort and dizziness.
3. If the dizziness is caused by wearing sunglasses for too long, control the time of wearing sunglasses every day, preferably within 8 hours.
4. If the dizziness is caused by the improper degree, it should be clear to the optometrist during the optometry that it is to check the degree of sunglasses or the degree of frame glasses, and the degree of left and right eyes must not be mistaken.
5. If the dizziness is caused by wearing sunglasses for the first time, try wearing them for a few days to relieve the situation. The time of wearing contact lenses every day in a week should not exceed four hours.
What's wrong with sunglasses
1. Sunglasses should not be worn in glaucoma. After wearing sunglasses, the visible light entering the eye will be reduced, and the pupil will open naturally, resulting in narrow anterior chamber angle and poor drainage of aqueous humor. For a long time, it is easy to induce the acute onset of angle closure glaucoma, with red eyes, eye pain, headache, sharp decline in vision, and even with nausea, vomiting and other systemic symptoms. Therefore, sunglasses should not be worn by patients with or suspected of glaucoma.
2. Sunglasses should not be worn where the light is weak. Some people even wear sunglasses at dusk, in the evening, when they watch movies and TV, regardless of the time and occasion, whether outdoors or indoors, whether the sun is strong or weak. This will aggravate the burden of the eyes, cause tension of the eye muscles, blurred vision, and even lead to dizziness, inability to see for a long time and other symptoms of visual fatigue.
3. Children under 6 should not wear sunglasses. The visual function of children under 6 years old is not mature, wearing sunglasses for a long time, the macular area of the fundus can not be effectively stimulated, which will affect the further development of vision, and even form amblyopia.
4. Wear large frame sunglasses carefully. Nowadays, many fashionable young people prefer to wear large frame sunglasses with wide edge, thick frame and heavy weight. In fact, after wearing such glasses for 1-2 weeks, the wearer will suffer from numbness in the eye socket or between the two cheeks, slow perception and other symptoms. When breathing, he will feel uncomfortable in the nose, just like a cold. Others feel like insects crawling on their faces, numbness in their upper gums, discomfort in their upper incisors, and sore eyes. This is because the facial sensation is dominated by trigeminal nerve. The infraorbital branch of trigeminal nerve is penetrated through the infraorbital hole of the infraorbital margin. Thick frame, wide edge and heavy weight Sunglasses often press on the infraorbital branch of trigeminal nerve, thus causing the sunglasses syndrome.