How to buy sunglasses?
1. The human body has an instinctive response to self-protection. When the eyes encounter strong light, the pupils will naturally become smaller, which reduces the ultraviolet energy entering the eyes. Once wearing glasses without UV protection, the pupils will be dilated. This kind of glasses does not have the effect of isolating ultraviolet rays. At this time, the eyes are equal to the door being wide open. If ultraviolet rays enter, the damage to the eyes can be imagined.
2. Sunglasses can block ultraviolet rays because a special coating film is added to the lenses. Inferior sunglasses not only cannot block ultraviolet rays, but also severely reduce the transmittance of the lenses, making the pupils larger, and the ultraviolet rays will be injected in large quantities. Damage to the eyes. In addition, inferior lenses also cause people to have symptoms of visual fatigue such as nausea, forgetfulness, and insomnia.
3. The color of sunglass lenses is light gray, brown or light smoky as the best color, followed by green, amber, blue, etc. The red is only used for sunbathing or on snow.
4. It is best to use polarized sunglasses in a car, because they can reduce the glare.
5. If after you put on sunglasses, others can see your eyes very clearly, then your lenses are too light.
6. When the sun goes down, it is best to remove the sunglasses, otherwise, our eyesight will be affected in places with weak light.
7. Go to a regular spectacle shop to choose sunglasses with anti-ultraviolet function produced by regular manufacturers.
8. Pay attention to the surface of the lens when choosing.
9. When buying sunglasses, you can judge by whether the vision is clear. If you want to buy high-quality sunglasses, the only thing you can do is to buy sunglasses at optical shops and regular optical shops.
10. Face modification:
① Round face: You need straight or angular frames to weaken your contours. Please use dark, subtle color lenses to reduce obesity and make your face look more exquisite.
② Square face: In contrast to the round face, you need some rounded, streamlined frames to set off your unruly extraordinary temperament.
③ Triangular face shape: Please avoid using large and square frames as much as possible, because this will make the face more wide and narrow at the bottom. It is best to use thin and round frames with bright colors.
④ Oval face: You are born to be very suitable for sunglasses. No matter what style is very suitable for you, just pay attention to the size ratio.
⑤ Rectangular face: You are most suitable for large-frame sunglasses, which can make up for the shortcomings of face length, make the face look more delicate, and the color is mainly dark.
