What "Cold" Knowledge Should You Know About Sunglasses
Nowadays, there are various types of sunglasses available on the market, but on the other hand, many people have found that some sunglasses feel particularly dim when worn, making it a bit difficult to see the road. Sometimes I feel eye pain, wear it for a long time, and even feel dizzy and dizzy. Obviously, the reason is that there is a problem with the quality of the glasses.
That's right, today Yichao doesn't talk about how to choose sunglasses based on face shape or which frame is the most fashionable. Instead, they want to talk about "cold knowledge" about sunglasses. Not only do we welcome friends who often wear sunglasses to come and observe, especially eyewear manufacturers, but we also need to understand the following content.
Firstly, let's talk about the real purpose of wearing sunglasses - of course not for a concave shape, but to prevent eye diseases!
1. The main function of sunglasses is to filter out ultraviolet rays. Excessive exposure to ultraviolet (UV) rays in sunlight can cause cataracts, eyelid skin cancer, and electric ophthalmic diseases. Even wearing a wide brimmed hat can only block about 50% of ultraviolet rays from reaching the eyes. Therefore, it is necessary to wear sunglasses when the sunlight is strong.
2. Sunglasses can filter short wavelength blue light. Research has found that long-term exposure to ultraviolet and short wavelength blue light is a risk factor for age-related age-related macular degeneration.
3. In summer, wearing sunglasses can reduce the adjustment burden of the Ciliary muscle of the eyes in strong light, so that the eyes can see objects in natural light.
Of course, sunglasses can play such an important role in protecting our eyes, and there is a crucial prerequisite - qualified quality.
At present, the main problem with low-quality sunglasses on the market is that the transmittance of the ultraviolet spectrum is not up to standard, which means that too much ultraviolet light is transmitted and cannot block the ultraviolet rays. In addition, there are too large axial position deviation and too large horizontal deviation of optical center, which are the main reasons for Blurred vision and eye fatigue.
Thank you for your reading
Wenzhou Mike Optical Company
009@mikeeyewear.com
Lissia
