What is Glare?
When light bounces off of a surface, its waves tend to be strongest in a particular direction — usually horizontally, vertically, or diagonally. This is called polarization. Sunlight bouncing off a surface like water, snow and glass, will usually reflects horizontally, striking the viewer's eyes intensely and creating glare.
Glare is not only annoying, but also very dangerous in some cases, especially for driving. It has been reported that Sun glare has been linked to a lot of deaths in traffic accidents.
In this case, what can we do to solve this problem?
Thanks to the Polarized lens, which is designed to reduce glare and also enhance the visual contrast, see more clearly and avoid hazards.
How does Polarized lens work?
Polarized glass only permits vertically-angled light to pass through, eliminating the harsh reflections which trouble us daily.
In addition to blocking blinding glare, polarized lenses can also help you to see better by improving contrast and visual comfort and acuity
When to use Polarized lens?
These are some specific situations when polarized sunglasses may be especially helpful:
- Fishing. People who fish find that polarized sunglasses drastically cut the glare and help them see into the water.
- Boating. A long day on the water can cause eyestrain. You may also see below the surface of the water better, which is important if you are driving a boat as well.
- Golfing. Some golfers feel that polarized lenses make it hard to read greens well when putting, but studies haven’t all agreed on this issue. Many golfers do find that polarized lenses reduce glare on fairways, and you can remove polarized sunglasses when putting if that’s your preference. Another benefit? Though this would never happen to you, golf balls that find their way into water hazards are easier to spot when wearing polarized lenses.
- Most snowy environments. Snow causes glare, so a pair of polarized sunglasses are usually a good choice. See below for when polarized sunglasses may not be the best choice in snow.
How to define if your Lenses are Polarized?
In most cases, polarized sunglasses don't look any different from regular tinted sun lens, then how to distinguish them?
- The below testing card is helpful to verify the polarized lens.
- If you have an “old” pair of polarized sunglasses, you can take the new lens and place it at a 90-degree angle. If the combined lenses turn dark or nearly black, your sunglasses are polarized.
Universe Optical produces premium quality Polarized lens, in full indexes 1.49 CR39/1.60 MR8/1.67 MR7, with Gray/Brown/Green. Different mirror coating colors are also available. More details is available at https://www.universeoptical.com/polarized-lens-product/