How Do Sunglasses Work?

You've been told your entire life that sunglasses are important. You know that they protect your eyes, block out the sun's ray and prolong good vision. But have you ever wondered how these miracle shades do all of that? Of course not, but you should learn. Sunglasses basically do four things for you, aside from completing a killer outfit. It is important to know what these things are and how they are done to ensure your sunglasses are doing their job.

As you probably already know, sunglasses provide protection from ultraviolet rays in sunlight. UV rays can cause serious damage to the corneas, and a good pair will shield 100% of these rays. A protective coating on the outside of sunglasses acts as a kind of filter. While it allows light through, it helps to filter out the radioactive light waves that can lead to so many dangers to your eyes.

Possibly the most prevalent purpose sunglasses serve is to provide protection from intense light. Intense sunlight can cause you to squint, a natural reaction to too much light entering the eyes. If squinting does not provide enough protection, damage to the cornea can occur next. This is especially common when outside in the snow without your sunglasses. The white of the snow reflects and magnifies the intensity of the light.

The tinting of your sunglasses will help determine the amount of light your eyes will be exposed to. As there are different types of light, all the colors of the rainbow, different shades of lenses will protect in their own ways. Gray and almost black tinted lenses will offer the greatest amount of protection from intense lights while avoiding distortion of most colors that you see.

Another quality sunglasses carry is something we are all most likely thankful for. They can provide protection from glare. Water and other shiny looking surfaces can produce a glare. These glares can block out other objects, like a car turning out of a parking lot just ahead of you. Good sunglasses can completely eliminate this kind of glare using polarization.

Light waves vibrate just like sound waves do. When a group of light waves come together but are traveling in different directions, a glare occurs. When you are blinded by a glare off of the water or another vehicle's windshield, what you are seeing is a traffic jam of light waves. Polarization filters built into sunglasses are made up of molecules that realign the light waves with each other and eliminate the glare.

As noted before, Sunglasses can eliminate specific frequencies of light. Certain light frequencies can cause blurred vision, while other frequencies enhance contrast between colors. Choosing the right color for your sunglasses lets them work better in specific situations.

Yellow, gold, amber and brown tinted sunglasses are especially good for blocking out blue light. Blue light is the color of light in the spectrum that scatters and causes blurred perception. While the yellow shades can make the rest of the world look a different color, you will see most clearly and detailed through them.

Green tinted sunglasses are better for filtering some blue light and reducing the occurrence of glares. They also offer the highest contrast and greatest visual sharpness of any other colored lens. For this reason, green sunglasses are very popular. Rose colored shades and purple tints offer the best contrast of objects against a green or blue background and make great sunglasses for hunting or water skiing.

Now that you know how sunglasses work you can be a responsible consumer. Know what to look for when choosing your sunglasses. It is not a bad idea to have more than one pair around for different reasons. This is especially true if you spend a lot of time outdoors on a variety of activities. Be responsible about your eyes and learn to protect your vision while it's still yours to protect!

Work in tropic

Primary Benefits of Sunglasses

There are many reasons to wear sunglasses, and everyone has one of their own. Whether it is to mask a hangover, create mystery or escape the paparazzi, sunglasses are a part of everyday life. However, often the true benefits of this popular accessory are lost when fashion or other purposes take over. It may not be your only reason, but your best reason for sunglasses should be to protect your eyes.

Science has come a long way in correcting vision gone bad. Corneal transplants help a blind person see again. Laser treatment can restore your eyesight to 20/20 or better in mere minutes. Even with all this technology, wouldn't it be easier to take care of your eyes from the start? By simply wearing good sunglasses, you will reduce your need for these scientific breakthroughs later in life.

The sun creates ultraviolet light rays which contribute to the heat it produces. These rays, called UVA and UVB can cause irreparable damage to your retina and corneas. If you've ever watched an eclipse, you know you had to do so through a pinhole in a shoebox. This is because staring directly to the sun can cause great damage to your eyes. Unfortunately, many people are unknowingly allowing their eyes to suffer the same fate by simply choosing not to wear sunglasses.

Such disorders as cataracts, macular degeneration, and even skin cancer around the eyes can be signs of sun damage and can be prevented in part by the use of sunglasses. Cataracts are an eye condition that involves clouding of the lens behind the Iris and Pupil. Although no one truly knows what causes cataracts, studies have shown links between this condition and increased exposure to ultraviolet light. Though we do not know 100% that this is the cause, it has been determined that people who habitually wear sunglasses have seen a decreased incidence of this eye disorder.

Macular degeneration causes those who suffer from it to have difficulty seeing in detail. Often even faces are hard for these people to distinguish. This disease, like cataracts, is most prevalent in elderly patients. However, also like cataracts, prolonged exposure to sunlight without the protection of sunglasses has been included as a probable cause. Individuals who practice care in selecting sunglasses with 99%-100% UV protection stand a greater chance at avoiding this fate.

Think about the last time that you spent all day in the sun and were really badly sunburned. You probably took cold baths and slathered yourself in Aloe Vera. It is a painful condition to be in when this happens to your skin. Now, imagine what that same sunlight that gave you second degree burns on your skin is doing to your eyes when you choose not to protect them with proper sunglasses. That alone should be motivation to hit the sunglass kiosk at the mall.

You don't often think of sunglasses as something that will protect your skin. In reality, a good pair of sunglasses can save your face in more ways than one. Increased exposure to sunlight can cause skin cancer and will attach the most sensitive areas first. How much more sensitive can you get then the skin around your eyes. Sunglasses can reduce the risk of skin cancer in the eyelids and areas around your eyes.

Another benefit your skin will enjoy from a good pair of sunglasses is a decreased appearance of lines around the eyes. Simply logic tells us that distorting the face in certain ways on a regular basis can cause premature wrinkles and increase the signs of aging. When you do not wear sunglasses, you tend to squint, as your eyes are uncomfortable being opened under bright light. Sunglasses can actually help reduce the appearance of crow's feet by allowing your facial muscles to remain relaxed.

Your eyes are one of your most valued features. Can you imagine waking up tomorrow and not being able to see? Many people are born blind and would give anything for the eyes you take for granted every day. A good pair of sunglasses will protect you against a world of eye disorders and pain. If you don't protect this valuable possession, before you know it, it could be gone.

Work in tropic