An ophthalmologist said that in the outpatient clinic, she often met some patients who cried and were afraid of the light when wearing sunglasses. Most of the sunglasses they choose are red, green and green, which is contrary to the light color advocated in medicine. In fact, dark brown and light green are all colors that are good for the eyes.
Wearing sunglasses will make the eyes in a dark room environment, and people's eyes will automatically dilate their pupils in the dark environment, which will easily lead to diseases such as glaucoma. Inferior sunglasses can also make more ultraviolet rays penetrate into the eyes, which is easy to cause solar keratitis, corneal endothelial damage, macular discoloration and other diseases; Sunglasses reduce the ability of eyes to distinguish colors, which is easy to cause color confusion and traffic accidents.
You should try to wear sunglasses outdoors in summer, but not all situations are suitable. In the shade without sunshine, you can take off your sunglasses and let your eyes rest in natural light for a while.
How to buy sunglasses
When buying sunglasses, you must pay attention to the lens, tag, color and ultraviolet index of the product. Every regular qualified product has a quality inspection certificate, and the merchant should show the relevant certificate when purchasing. The tag on sunglasses is the "ID card" of the product, indicating the place of origin of the glasses, but it also hides a lot of useful information, such as whether the glasses you bought are sunglasses or light-colored glasses, resin lenses or other materials ... This cannot be ignored.
In order to prevent ultraviolet rays, it is best to buy sunglasses with light gray, light green and blue-gray lenses, because these relatively soft colors will naturally not change color. For sunglasses, the ultraviolet index is an important criterion for filtering ultraviolet rays. At present, the ultraviolet index of most sunglasses is between 96% and 98%, and dark lenses are better than light lenses.
How to wear sunglasses
1. If ordinary people are not mountain climbers or people with special needs, it is best not to wear sunglasses for a long time.
Nowadays, ordinary people wear sunglasses, besides the protective function, they also consider the decorative function, but we should not forget our health for the sake of temporary beauty.
It's a bad habit that many people walk indoors without taking off their sunglasses. The intensity of indoor light makes it completely unnecessary to wear sunglasses.
4. You can't wear sunglasses for a long time. If you feel a little tired, or after wearing it for 30 minutes, you'd better take it off for a change.
People over 5.40 years old and glaucoma patients are not suitable to wear sunglasses.
6. Healthy preschool children, stereoscopic vision is not yet mature, and it is not suitable for wearing sunglasses at all, especially the inferior red sunglasses on the market now, which is very harmful to children's eyes.
7. When buying sunglasses, you must go to a regular big store.