Posts Tagged ‘polarized sunglass’

Specialty Eyewear: Glasses for Special Occasions and Tasks

July 22nd, 2011

While “one size fits all” might be true with some other products, it’s rare that one pair of eyeglasses is suitable for all occasions. You may need to put on your reading glasses to read a novel and switch to some protective eyewear when you decide to go out with a punch of buddies to shoot hoods. And when you are working in front of a computer for long hours, those regular eyeglasses don’t really do anything in cutting off the eye strain. With eyeglasses, you need to put on the right pair for the right occasion and task. Specialty eyewear, eyeglasses designed specially for certain tasks can help you optimize your vision for almost any scenario.

Computer Glasses

Do you often spend long hours in front of a computer working on your soon overdue reports? If you do, you must be familiar with the agony. Computer vision syndrome has become a major job-related complaint as these machines have taken over the workplace all together in the last few decades. You may not be able to escape computers, but you can put on some specially designed eyewear for computer work to make you feel better. Designed specifically for intermediate and close-up distances, the zones most associated with computer use, computer-specific eyewear gives you the best correction for these distances and helps you avoid eye strain.

Driving Glasses

Driving-specific glasses basically fall into two categories: sunglasses designed specifically for driving and prescription eyeglasses. Sunglasses for driving feature polarized lenses that reduce glare and make it easier to see in bright sunlight. Many accidents occur because the drivers couldn’t see other cars or a pedestrian because of glare reflecting off the road or the sun burning in their eyes. Polarized sunglass can reduce glare and make it easier to see in bright conditions. Besides, polarized lenses tinted specifically for driving can increase contrast for sharper vision, giving the driver a clearer view to navigate. Prescription eyewear for driving on the other hand includes an appropriate distance prescription and lenses with an anti-reflective coating. This special coating reduces glare reflecting off the front and back surfaces of your lenses. They also allow more light to enter your eyes for better vision when driving at night.

Safety Eyewear

To protect their eyes from potential eye injuries, many people buy specialty eyewear that are designed for safety functions. This type of glasses is usually made of ultra-durable materials and provides more coverage than regular glasses. The frame usually features a wraparound design or includes top and side shields. Spring hinges are often included for adding durability. In terms of lenses, most of these glasses choose lightweight, impact-resistant polycarbonate or Trivex lenses to achieve comfort and extra eye protection.

Polarized Sunglasses: A Better Way to Block Glare

July 9th, 2011

Having been popular for years with boaters and fishermen who need to reduce glare reflected from the water around them when they are working, polarized sunglasses are getting more and more attention from people of all walks of life as their benefits are being discovered by more and more people.

Outdoor sports enthusiasts, including skiers, golfers, bikers and joggers are all rushing out to get their hands on these sunglasses. Besides, almost anyone who has to drive on a sunny day finds these sunglasses helpful in that they can reduce glare from smooth surfaces like the hood of a car or the road’s surface. Light-sensitive people, like post-cataract surgery patients and others who suffer continual exposure to bright light through windows can even wear them indoors to see clearer.

“How exactly do polarized sunglasses work” you may ask. To answer that , we need to first be aware of the fact that light reflected from a smooth surface such as snow or water tends to be horizontally polarized, which means that instead of scattered in all directions, light travels in a more horizontal direction. This usually creates a rather annoying and sometimes even dangerous intensity of light that we know of as glare. A vertical polarizing lens thus can reduce the brightness of the light waves and at the same time let optical information through. Depending on the angle, polarized sunglasses can be made to filter out no light or all of the light, catering to different needs.

An advantage of polarized sunglasses over traditional sunglasses is that they let useful detailed optical information through while blocking out glare that might hurt your eyes. Traditional sunglasses block everything, which can be sometimes extremely dangerous especially when you need information of your environment to navigate.

There are, however, some instances when polarized sunglasses are not advised. One is when you are looking at those liquid crystal displays (LCDs). Polarized lenses may reduce the visibility of images produced by those displays. So, you might have to take off your glasses when you are reading the numbers on an automatic teller machine or trying to look at your cell phone screen or GPS device. Another occasion is when you are downhill skiing. After all, you don’t want to block light reflected from icy patches that tells where the danger zones are.