How should you use sunglasses? How to choose the right sunglasses?

People often wear sunglasses when traveling. Because sunglasses can withstand part of the strong light and protect their eyes, most people wear them in places with strong outdoor light. Sunglasses, so how should sunglasses be used? How to choose the right sunglasses? What types of sunglasses are there?

1. How to use sunglasses |

Use of sunglasses of different colors

When driving, it is most suitable to wear brown sunglasses

Tan lenses can It absorbs purple and cyan in light, can absorb almost 100% of ultraviolet and infrared rays, and can block the reflected light from smooth and shiny surfaces. People who wear glasses can still see the fine parts clearly, making it an ideal choice for drivers. Therefore, for those who drive, such professional driving sunglasses must be indispensable.

When traveling, gray and green are better

Sunglass lenses designed for traveling are basically made of dyed plastic materials. On the same lens, the top is dark and the bottom is light. At this time, the lenses of sunglasses should be able to pass through 30% of visible light, with gray and green being the best, because these relatively soft colors will not change color when looking at the scenery outside, and they can also resist ultraviolet rays, ensuring The clarity of vision is optimal, and the color change through external objects is minimal.

When doing outdoor sports, choose professional polarized sunglasses

When doing outdoor sports such as sea or skiing, the sunglasses you wear must have the function of blocking strong light, such as polarized-coated sunglasses. . In order to filter the dazzling rays of the sun shining in the same direction on water, land or snow, special coatings in the vertical direction are added to the lenses, which can filter the messy radiated light, scattered light and water wave light from the outside world into soft linear light, making them No more damage to eyes. Professional polarized sunglasses are suitable for outdoor sports such as marine activities, skiing or fishing, but they are not suitable for daily life, especially when driving, because they will make you unable to see clearly.

Sunglasses with a depth of 35% are suitable for sun exposure

The colors of sunglasses are divided into 4 types according to depth, namely 15%, 35%, 50% and 70%. The 15% depth is the shallowest and is suitable for indoor wear, especially for people with prescription eyes, which can avoid the trouble of taking it off and putting it on; the 35% depth is suitable for use outdoors in the sun; the 50% depth sunglasses can be used in They are worn under the scorching sun or at the beach; sunglasses with a depth of 70% are not commonly used in daily life and are generally used by professionals such as welders.

2. Things to note when purchasing sunglasses

1. There is an anti-UV mark

UV protection is the primary function of sunglasses. Some sunglasses have a mark on the lenses or packaging. "100% UV protection", "UV400", "UV protection" and other signs. If you wear low-quality sunglasses that cannot block ultraviolet rays, more ultraviolet rays enter the eyes than without sunglasses, which is more likely to cause eye damage. Over time, it can cause cataracts, eye pain, corneal edema, corneal epithelial shedding and other symptoms. . Regular optical stores generally have instruments to test the UV protection ability of sunglasses, which can detect whether your choice is correct. The quality of spectacle lenses sold by street stalls and hawkers often does not meet the standards, so it is best not to buy them.

2. Choose gray, brown and green lenses

The color of the lens should be selected based on the principle that the color of the surrounding environment will not be distorted, the edges of objects will be clear, and traffic lights of different colors can be effectively identified. . The colors of the lenses are preferably gray, brown, or green, because lenses of these colors absorb better infrared and ultraviolet rays.

3. Medium-depth lenses

Generally speaking, the darker the color of the lens, the stronger the light-blocking effect, but it does not mean that the ability to protect against ultraviolet rays is stronger. Sunglasses are UV-resistant. The function is also related to factors such as the material and craftsmanship of the lens. Lenses are generally of medium depth. Of course, if a strong shading effect is required, darker lenses should be selected. However, cyclists or drivers cannot choose lenses that are too dark, otherwise it will be difficult to identify the color of traffic lights.

4. The occasion determines the angle of choice

When going out for activities, you should choose different sunglasses for different occasions. For example, some sports sunglasses have specially made frames to protect the eyes according to different needs and can be worn comfortably and firmly, such as water skiing, skiing, mountaineering, golf, and tennis. sunglasses. For those who love golf and tennis, amber lenses can effectively increase contrast and absorb blue light, contributing to visual comfort during sports.

It is best to wear swimming goggles with anti-UV treatment when swimming outdoors. Drivers and fishing enthusiasts are best to choose polarized sunglasses, because polarized lenses can eliminate glare from all directions and make objects look clearer.

5. Let sunglasses add points to your beauty

Generally speaking, different people will choose sunglasses based on different preferences and different uses, but the most fundamental thing is to choose sunglasses from the perspective of functionality. Starting from the basic principle of protecting the wearer's eyes from damage. The basic functions of sunglasses should be to reduce strong light stimulation, see clearly without distortion, protect against ultraviolet rays, recognize colors without distortion, and accurately identify traffic signals.

In addition, when purchasing sunglasses, you must also consider whether they match your eye size, face shape, eyebrows, and nose. Those with big eyes can choose glasses with large frames, while those with smaller eyes should choose smaller frames; round faces are suitable for thicker frames, thin and elongated faces are suitable for round frames, and oblate faces should choose square frames that are slightly narrower at the top and bottom.