Uv protection
View the logo: It is preferred to choose sunglasses with a clear UV protection logo, such as “UV400″, which means that the sunglasses can block more than 99% of the ultraviolet light, including UVA and UVB, to provide good protection for the eyes.
Understand the material and technology: lens materials such as glass, resin, PC, etc., themselves or after treatment have a certain ability to prevent ultraviolet rays. In addition, some special coating technology can also enhance the UV protection effect, such as some lenses will be coated with multiple UV protection films, which can further block UV rays.
Wearing comfort
Frame material: Choose a light weight, soft material and a certain flexibility of the frame. Common frame materials are plastic, metal and titanium alloy. Plastic frames are lightweight and affordable; Metal frames are strong and durable but may be heavy; Titanium frame has the advantages of light weight, high strength and anti-allergy, suitable for long-term wear.
Lens quality: high-quality lenses should have good optical properties, clear vision, no deformation, no obvious color difference and distortion. You can judge the quality of the lens by observing whether there are scratches, bubbles and other defects. At the same time, you can try to observe distant objects to see if there is deformation or blurring.
Size and fit: The size of sunglasses should be suitable for your face shape and head circumference. Frames that are too tight will cause discomfort to the head, and too loose will easily slip. When trying it on, pay attention to whether the frame fits the face, does not cause excessive pressure on the bridge of the nose and ears, and can effectively block the sun to prevent light from shining into the eyes from the side.
Other considerations
Polarizing function: If you are often in the water, snow, roads and other easy to produce glare in the environment, polarizing sunglasses are a good choice. It can effectively filter polarized light, reduce glare, improve visual contrast and clarity, and make the eyes more comfortable.
Color selection: Different colored lenses are suitable for different environments and activities. For example, gray lenses provide natural color perception and are suitable for a variety of light conditions; Brown lenses can enhance contrast while reducing glare, suitable for driving and general outdoor activities; Yellow lenses can enhance contrast, and the visual effect is better in low light or foggy environments, but it is not suitable for use in strong sunlight.
Post time: Mar-25-2025