Category: Jewelry Watches glasses

Question:
ask how to choose sunglasses?

Answer:
the summer season, many people used to wear a pair of sunglasses block the glare of the sun, but not what sunglasses can protect the eyes. National Institute of Metrology of Wang Li Ru Director reminded that the wearing of sunglasses is to protect the eye against UV-induced damage in a better way, but pay particular attention to the choice of sunglasses, or just the opposite. What’s the difference

sunglasses

the latest research shows that different styles of sunglasses block glare on the degree of stimulation varies considerably. The size is concerned, when selecting an appropriate larger. Travel sunglasses have not made any luminosity, resulting from the pupillary distance restrictions, larger mirror that can make a more open field of vision, but also to enable the average weight of the arm glasses scattered on the ears and nose. In general, tourism glasses glasses slightly larger than the average 4-6 mm is better.

the color, the color of dark sunglasses can effectively block the light, the transmittance in the visible region may be only …