A good pair of sunglasses, in addition to the style, the lens is also very important. Do you hope that your sunglasses assembly of the lens whether is matched? Or whether can help you correct vision problems? What's more, it can protect your eyesight against UV damage. There are three important factors to consider when choosing sunglasses lenses: lens material, lens color, and lens coating.
Sunglass Lens material Guide
The first pair of plastic lenses are made of a plastic polymer called CR-39. Polycarbonate lenses were introduced in the late 1980s. They are still the most common material for making sunglasses lenses. Polycarbonate lenses are popular because they are lighter, more durable, and less likely to break. If you are using lenses for children on sports, instead consider choosing polycarbonate lenses.
High refractive index plastic is the latest material for sunglasses lenses. They are lighter, thinner, and flatter than polycarbonate lenses. If you have deep nearsightedness or farsightedness, high refractive index plastics will be your best choice.
Sunglass Lens Color Guide
Most people consider that darker lenses provide better UV protection. Actually, the color of the lens has nothing to do with the degree of UV protection. Because the UV-blocking coating is transparent, dark lenses are not necessarily more UV-resistant.
However, the color of your lenses still affects your vision. Certain lens colors are more suitable for specific activities, so you still have to think about which best color for sunglasses lens is best for you.
Here are some sunglasses color guides for your reference. Generally speaking, green-tinted sunglasses lenses are suitable for use all day, because what you see through the green is the closest to the real scene. Brown or amber tinted sunglasses lenses with red light, which makes the colors look more contrasting, Therefore, they are most suitable for sports, such as tennis, fishing, golf, and sailing. It is more beneficial to see the environment more clearly.
Enhancing tonal contrast is not only in normal tinted lenses but full-vision lenses, also known as color-changing lenses. The color-changing lens will only automatically change color when the ultraviolet rays are directly irradiated and will become transparent when the sun turns dimmed or indoors. It is very suitable for people who often go in and out or work outdoors.
Sunglass Lens coating Guide
There are many different coatings on the market that you can add to the lens. For example, there are different sunglasses lens coating types. Such as anti-scratch, anti-glare, anti-reflective, anti-ultraviolet, mirror effect, and even polarized lens coating.
However, if you choose a pair of expensive frames and plan to use it for a long time, we strongly recommend that your lenses have at least the first four coatings mentioned above.
The anti-scratch coating ensures that your lenses are protected from scratches --- for example, sand on the beach, items in your handbag, or shirt buttons. Anti-glare, anti-reflective and polarizing coatings all help increase your vision under strong light (especially when exposed to strong light for more than 10 minutes).
Anti-ultraviolet coating can protect the eyes from harmful ultraviolet rays. Sunglasses should have this coating. Mirror effect lenses can reflect light, but they are usually regarded for aesthetic purposes. Therefore, it is recommended to choose lenses with anti-glare, anti-reflective, and anti-scratch coatings when choosing lenses.