[Sunglasses]What are the colors of sunglasses and what should be paid attention to when buying sunglasses
Strong sunlight contains a lot of ultraviolet and infrared rays, which may damage the cornea, lens, and even the Under the eyes, wear a pair of sunglasses, which can block or absorb part of the light and reduce irritation to the eyes. In recent years, due to everyone’s emphasis on health, many people like to wear sunglasses when going out in hot summer to reduce the stimulation of sunlight. Some people also like to use it as a decoration. need to choose.
What colors are the sunglasses in
Pink Lenses
This is a very common color. It absorbs 95 percent of ultraviolet light, and some shorter wavelengths of visible light. In fact, this function is similar to that of ordinary untinted lenses, which means that pink lenses do not have a greater protective effect than ordinary lenses. But for some people, it’s still quite helpful psychologically because they feel more comfortable wearing them.
Grey Lenses
Absorbs 98 percent of IR and 98 percent of UV. The biggest advantage of the gray lens is that the original color of the scene will not be changed by the lens, and the most satisfying thing is that it can reduce the light intensity very effectively.
Green lenses
Green lenses can be said to be represented by ‘Ray-Ban series’ lenses, which, like gray lenses, can effectively absorb infrared light and 99 percent UV. But green lenses can distort the color changes in some scenes. Also, it is slightly less effective at blocking light than grey lenses, however, green is still an excellent protective lens.
Brown lenses
These lenses absorb the same kinds of light as green lenses, but absorb more blue light than green lenses. Brown lenses distort the color more than gray and green lenses, so the average person is less satisfied. But it offers another color option and slightly reduces the halo of blue light, making the image clearer.
Yellow Lenses
Absorbs 100 percent of UV rays and allows IR and 83 percent of visible light to pass through the lenses. The biggest feature of yellow lenses is that they absorb most of the blue light. Because when the sun shines through the atmosphere, it mainly appears as blue light (which can explain why the sky is blue). After the yellow lens absorbs blue light, it can make the natural scenery clearer. Therefore, the yellow lens is often used as a ‘filter’ or used by hunters when hunting. However, no one can prove that the shooter is better at target shooting because he wears yellow glasses.
What problems should you pay attention to when buying sunglasses
Medical experts recommend that when buying sunglasses, you can judge according to whether the vision is clear. To buy high-quality sunglasses, the only thing that can be done is to buy sunglasses from optical specialty stores and regular optical shops.
??The human body has an instinctive response for self-protection. When the eyes encounter strong light, the pupils will naturally become smaller, reducing the ultraviolet energy entering the eyes. Once wearing glasses without UV protection, the pupils will become smaller. Zooming in, coupled with the fact that these glasses do not have the effect of isolating ultraviolet rays, at this time the eyes are equivalent to opening the door, and the damage to the eyes can be imagined if the ultraviolet rays enter.
??Sunglasses can block ultraviolet rays because a special coating is added to the lenses, and inferior sunglasses not only cannot block ultraviolet rays, but also seriously reduce the transmittance of the lenses, making the pupils larger, and ultraviolet rays instead. Can be injected in large quantities, causing eye damage. In addition, poor-quality lenses can also cause nausea, forgetfulness, insomnia and other visual fatigue symptoms.
??Light gray, brown or light smoke is the best color for sunglasses, followed by green, amber, blue, etc. Red is only used for sunbathing or on snow.
??It is best to use polarized sunglasses when driving in a car, because they can reduce the glare of bright light.
??If others can see your eyes very clearly after you wear sunglasses, then your lenses are too light.
??When the sun goes down, it is better to remove the sunglasses, otherwise, our vision will be affected in the weak light.
??You should go to a regular optical shop and choose sunglasses with UV protection from regular manufacturers.
??Pay attention to the surface of the lens when selecting.
??Those with a slender face are suitable for round frame sunglasses.
Frames for Face Shapes
Sunglasses are the focal point of the entire face, strongly delineating the contours of the face, like a thick belt
that accentuates the small waist of a skirt. What kind of face shape, what kind of framed sunglasses should I wear? The following is the advice of optometrist Chen Huifen: Miu Miu ultra-thick plastic sunglasses play black and white, and the temple design is clear.
1. Oval face: with square, or smaller square frame sunglasses. This face shape is the most flattering and is suitable for any kind of frame.
2. Round face shape: Sunglasses with larger lenses, preferably a rectangular frame, outline the outline.
3. Square face: with round or oval frame, wide enough and light enough.
4. Water chestnut face: with a one-piece frame.