At present, there are more and more shades on the market, which can be roughly divided into tawny, grey, yellow, green and red. Different shades also have different sunscreen effects.Tawny sunglasses are recognized as the best lens color in the product range, which can absorb almost 100% of ultravio Read More
Although most bifocals and trifocals have visible lines at the border of lens segments, there is a blended round-seg bifocal that has a less noticeable near segment than its regular round-seg cousin. The near seg is blended into the distance portion of the lens so that it is virtually invisible.Blen Read More
1, pay attention to develop good hygiene habits: computer operators should not operate the computer while eating, also should not eat in the operating room, otherwise easy to cause indigestion or gastritis.Computer keyboard contact more, after work should wash their hands to prevent infectious disea Read More
