why do polarized lenses make good sunglasses

What are Polarized Sunglasses? Premium water sports-oriented brands, like Maui Jim and Costa, use polarized lenses for the specific purpose of reducing glare that comes off the water. And the well known drivewear brand Serengeti only uses polarized lenses for their high tech range of driving sunglasses. But polarized lenses arenвt only for fishermen and racecar drivers! Our most popular polarized sunglasses on FramesDirect. com are Ray-Bans в a fashionable choice for comfortable and safe eyes in bright light conditions. Polarized sunglasses are perfect for enhancing your vision as you go about your everyday activities. Polarized lenses have many benefits on water and on land. Perfect for boating, fishing, surfing or any time spent on the water; polarized lenses reduce painful glare.

They can help anglers discern fish under the surface of the water, improve vision while driving a boat, or even improve your tennis or golf game. They are great for driving because they reduce glare coming from the surface of the road, the hood of the car, and reflections coming off other cars on the road. With reduced or eliminated glare and enhanced contrast, polarized lenses make it easy to discern a ball flying through the air or a hazard on the road. They eliminate the harsh glare from the sun and help enhance colors and contrast leaving a remarkably crisp field of vision. Not only do polarized lenses reduce eye strain and make for safer driving and boating, they can also improve visual clarity and enhance perception of colors. What Does Polarized Mean?

How do polarized lenses work? Polarized sunglasses work by realigning incoming horizontal light. Horizontally reflected light from a surface like a road or a body of water is more intense than more scattered light and results in an uncomfortable glare. The special laminated filter in polarized lenses contains vertical stripes, breaking down glare like a venetian blind. Allowing only vertically oriented light to pass through results in clearer, safer vision and more comfortable eyes. The difference between polarized sunglasses and normal sunglasses is that polarized lenses selectively eliminate the wavelengths of light that cause glare, while normal sunglasses absorb all light wavelengths equally. (Also see
on our blog). Polarized lenses are available in a variety of colors such as gray, brown, red, orange, yellow, green, blue, violet, and copper.

Most polarized lenses also come equipped with UV protection and you can get polarized lenses with fashionable features such as gradient tint or mirrored coating. Polarized options are also available on photochromic sunglasses (which means the tint darkens in the sun. ) Sure, thereБs a cool factor at play here. But when you slip on your favorite pair of shades before you go outside -- every time you go outside -- thereБs more going on than just a nice look. It matters for a lot of reasons. First, you'll ward off those littleб б at the corners of yourб. They come from too much time in the sun. You'll protect the whites of yourб б from damage and block that eyeball-searing ultraviolet (UV) light.

So grab thoseб б before you head for the beach, or the park, or anywhere outside -- whether itБs bright or cloudy. And buy some for the kids in your life, too. Follow these rules to pick a pair that look good and protect your peepers. The sun gives off UVб б that you canБt see or feel. In small doses, it boostsб. But too much of it can cause problems like sunburn andб. It can also damage yourб. Before you even check the price tag, read the label. Do these glasses block 100% of both UVA and UVB rays? If not, leave them on the rack. БYou want both of those blocked 99 to 100%,Б says eye doctor Rachel Bishop, MD. БItБs not too much to expect your glasses to do that. Б Too much UV light can causeб. It can also destroy the retina, the lining at the back of your eyes that helps you see clearly.

It could even cause tissue to grow over your eyeball. UV light can cause changes in cells that lead to б cancer, Bishop says. It may not lead to cancer in your eyes, but it can thicken tissues around them and cause discomfort. A pair that doesnБt fit well can let UV rays seep onto your skin and into your eyes. БI look at something that fits the face well,Б says optometrist Fraser Horn, OD. БI donБt want it up touching the eyelashes, but I also donБt want it pushed way out. And I want something that lines up with your brow. Б Sunglasses that wrap around your eyes can help block stray UV light. They can also keep out sand and allergens. Those things arenБt good for your eyes, either.