A great number of scientific studies show that spending long hours in the sun without eye protection can not only damage your eyes but also contribute to cataracts, macular degeneration, and cancer. That’s the reason why ophthalmologists recommend wearing 99% and above UV-absorbent sunglasses if you’re in the sun for long periods of time. Sunglasses are a must for outdoors Sunglasses can be worn whenever you are outdoors but they are a must under these circumstances: – During the summer – At the beach or in the water; as the glare is too harmful – At high altitudes – While using medications that can cause photosentivity Shopping for Sunglasses; what to look for actually IT SHOULD BLOCK 99% OF ULTRAVIOLET RAYS: Always buy sunglasses with this feature. Long-term exposure to ultraviolet (UV) radiation causes eye disease. UVB radiations are more dangerous to the eyes than UVA radiation. Go for sunglasses that block 99% or 100% of all UV light. GROUND AND POLISHED: You must make sure that the lenses you buy are properly made. To judge the quality of nonprescription sunglasses, eye something with a rectangular pattern, such as floor tile. Hold your glasses at a comfortable distance and cover one eye. Slowly move the glasses from side to side and up and down. If the lines stay straight, the lenses are fine. If the lines waggle, especially in the center of the lens, go for another one. IMPACT RESISTANT: The sunglasses you go for must meet the impact standards set by the Federal Food and Drug Administration (FDA) for safety. POLARIZED: Polarized lenses help to cut the reflected glare. These are in particular good for driving and fishing. PHOTOCHROMIC: A photochromic glass lens automatically darkens in bright light and becomes lighter in low light. Although these lenses are good UV-absorbent sunglasses, but it takes time for them to adjust to different light conditions. WRAPAROUND STYLE: Wraparound glasses are good as they protect your eyes from all angles, which other frames are usually not able to do. GRADIENT LENSES: Gradient lenses are a must have. However, what kind of depends on you and your surroundings. Single-gradient lenses, which are dark on top and lighter on the bottom, help in cutting glare from the sky. It also enables us to see clearly below. These are useful for driving purpose but not good for areas like beach or snow. Double-gradient lenses (dark on top and bottom and lighter in the middle) are assumed to be better for sports especially, for sports such as sailing or skiing. MIRROR-COATED: Mirror finishes are thin layers of various metallic coatings on an ordinary lens. However, they don’t protect you fully against UV radiations. People at greater risk for UV-related eye damage Studies reveal that some people with certain eye diseases such as macular degeneration and retinal dystrophy are at greater risk for UV-related sun damage. As a precaution, they should always wear absorbent sunglasses whenever they go outside. Contact lens wearers; sunglasses for you too Contact lenses are types too; one that can protect your eyes from UV lights and the other, which can’t. If you do not have contact lenses that can absorb UV light, you certainly need sunglasses to do so. Sunglasses won’t protect in every situation Arc welding, tanning lights, snowfields, or gazing directly at the sun, especially during a solar eclipse, for example, can severely damage your eyes. Even sunglasses can’t help you under these conditions. For general outdoor activities, proper sunglasses are key to protecting your eyes from sun-related damage. The best sunglasses offer 100% UV absorption, are of the best optical quality, and are impact resistant.
Daily Archives: February 8, 2012
To match our sunglasses with each of our outfit, we would definitely need pairs and pairs of them. But according to the American Chemical Society (ACS), University of Washington scientists have developed a new lens material that can change their color. The key to this eyewear technology is an electro chromic polymer. It has the capability to increase or decrease the levels of darkness and color in the presence of an electric current. All you need to do is push a button on the frame and your glasses will become red, green, orange or any color. Yup! That’s the magic. However, we will have to wait a couple of years before actually getting these sunglasses. These ‘smart’ sunglasses can also be adjusted to block from 55 percent to 95 percent of the incoming rays. This research work was led by Chunye Xu, who is an assistant professor at the University of Washington and even an associate director of the University’s Center for Intelligent Materials and Systems (CIMS), whose research work is mainly concentrated on Electro active Polymers [EAP] and EAP based actuators.
Brand new stylish Bluetooth sunglasses are out and they as expected, merge the concept of sunglasses with latest technology, built-in mp3 player and even the Bluetooth function. People on move, this ought to be your pick this time. Why? The answer is simple. Being on the move most of the times, you really need to relax and chill, so music is quite essential. Sunglasses are much obvious for that style of yours. Cell phones are inevitable. And this serves the threesome together. While music banging in your head, if you’ll receive a call, this Bluetooth device will automatically detect the incoming call and turn off the mp3 music. You can receive the call with just a click of a button. After you are done with your gossip, the mp3 player will start playing again.