Be Careful When Purchasing Sunglasses. Poor Sunglasses Hurt Your Eyes
After wearing sunglasses, as part of the sunlight is filtered out, the eyes do not have to squint all the time, but the pupils will also enlarge at the same time. At this time, if the sunglasses are unqualified, a large amount of ultraviolet rays that cannot be filtered will double and directly enter the eyes, damaging the cornea, retina and lens of the eyes, greatly increasing the probability of suffering from "cataract".
Therefore, sunglasses can not be worn casually. Unqualified sunglasses will also bring certain harm to the eyes.
1. Objects are distorted, causing visual confusion.
2. Dizziness, headache, even nausea, insomnia.
3. It consumes eyesight and causes eye fatigue.
4. Unable to filter harmful light, causing eye damage.
At present, the quality of sunglasses sold on the market is uneven. What kind of sunglasses are qualified?
1. More than 90% harmful light can be filtered out.
2. The lens must have sufficient area to prevent the light source from penetrating into the side of the lens frame.
3. There must be an accurate optical lens, and the scenery cannot be distorted when passing through the lens.
4. The face color ratio between the two lenses must be uniform, with an error of no more than 5%.
5. It should be of good texture, light and comfortable to wear, and conform to ergonomics.
6. Impact resistance, not easy to break.
7. There should be no prism effect, otherwise there will be dizziness.
8. It has the function of facial modification.
A pair of qualified Sunglasses may have very different prices due to differences in brand, material, packaging, style, color and publicity. Sunglasses worth 20 or 30 yuan also exist, but their quality is often not guaranteed. Therefore, it is recommended that you go to a well-known optical shop or online optical shop to purchase, at least in terms of quality inspection and health inspection.
Thank you for your reading
009@mikeeyewear.com
Lissia
