It is widely acknowledged that sunglasses have changed a lot both in design and function since their first popularity in the early 1900s. As we know, sunglasses can protect our eyes from UV radiation in the strong sunlight. It is because that long time exposure to the sun glare will be damaged to eyes and easy to cause other eye problems. And sunglasses can protest against UV radiation and help see things clearly in the direct sun glare without squinting.
Sunglasses offer protection against excessive exposure to sunlight, which contains some harmful rays. Among the visible and invisible components in sunlight, UV radiation is the most widespread in the public. Many eye experts think that these harmful rays can cause short-term and long-term ocular problems such as snow blindness, cataract.
Luckily, sunglasses can solve all the problems. Therefore, the importance of wearing protective sunglasses can never be ignored. Sunglasses also find a good market in the current eyewear industry. Many manufacturers grasp the opportunity to create variety of sunglasses to draw attention from customers. Accordingly, assortments of sunglasses are available. It can be said that eyewear users can find any styles they expect whether stylish ones or retro ones.
Actually, the utility of sunglasses for UV radiation protection can be dated back into as early as 12th century in China. Of course, these sunglasses were completely different from contemporary sunglasses. People lived in the accent times used original crystals as sunglasses, and they could protect the eyes from glare and conceal people’s facial expressions. This latter function is still be widely pursued by many people especially stars of silent movies. It is mainly that the sunglasses can help celebrities avoid recognition by their fans.
Now, contemporary sunglasses not only mean the functional help. They have been one of the fashion elements. A majority of contemporary sunglass wearers can get more benefits from using sunglasses. Sunglasses can provide them with fashionable elements and colorful decoration.