subject: Pros And Cons Of Polarized Sunglasses [print this page] In US, wearing polarized sunglasses has become a new fashion craze. This new accessory fits kids, adults and individuals of every age group. Actually, the new trend reflects that the fashionable world always experiences rapid changes year after year. Fashionable eyeglasses especially sunglasses are nowadays quite similar to designer flashy and vibrant clothes.
In fact, polarized sunglasses do not only function as a fashionable accessory. They offer additional benefits beyond ordinary sunglasses. Iris inside the human eye has the ability to control the amount of light that enters into the eye. This intricately designed part of the eye can thus help the eye avoid excessive penetration of light. But with gleaming sunlight, the natural light control by the iris is not enough. This inability of the eye iris calls for the invention of polarized sunglasses which are aimed to reduce glare from sunlight.
Lenses of polarized sunglasses were first developed by Edwin H. Land in 1936. As the name suggests, polarized lenses can polarize the light reflection from transparent and flat surfaces such as water and snow, making it vibrate in one direction. From another perspective, polarized sunglasses can absorb the reflection of sun emitting by 97%.
Providing such an irreplaceable benefit, polarized sunglasses significantly help a large variety of individuals, including fishermen, divers, skiers, marine navigators, professionals practicing aquatic sports, joggers and even joggers, walkers, athletes as well as other sports enthusiasts. Taking drivers for example, they can benefit from polarized sunglasses because the amount of glare reflecting from the top of the car glass can be considerably reduced. This benefit can help drivers avoid getting frustrated during driving and prevent any incidents or dangers.
Disadvantages of polarized sunglasses are also worth mentioning. These lenses would cause difficulty in differentiating between ice patches and moguls during downhill skiing and other similar snow sports. In addition, polarized lenses will react with polarized light in liquid crystal displays.
