If you've shopped for sunglasses recently, you might have noticed that a few of them have polarized lenses. You may already know that it's important to purchase sunglasses that protect against the sun's ultraviolet (UV) rays. But what are polarized sunglasses, and what do they provide that other sunglasses don't?
What are polarized sunglasses?
Polarized sunglasses are made with special lenses that reduce glare attributable to light reflected off horizontal surfaces corresponding to roads and bodies of water. Both non-prescription and prescription glasses can have polarized lenses.
You won't consider glare as dangerous, but in some cases it could possibly be. For example, take into consideration how glare affects your vision when driving on a flat road on a brilliant, sunny day. Wearing polarized glasses reduces glare, reduces eye strain, and might make it easier to make out details more clearly.
How do polarized sunglasses work?
When sunlight hits an uneven surface, it scatters in multiple directions. It often doesn't affect your ability to see clearly. But even when light hits surfaces—like a pond, a flat road, or a snow-covered slope on a sunny day—the sunshine doesn't scatter. Instead, it's reflected in a single direction, causing glare and reducing depth perception. You may additionally feel temporarily blinded by light.
The chemicals used on polarized lenses reflect light in order that not all light passes through the lens. This makes it easier to see things clearly.
Benefits of Polarized Sunscreen
Polarized sunglasses are generally advantageous to wear as on a regular basis sunglasses. They are perfect for activities and sports where you might be prone to get glare from reflective surfaces corresponding to boating, fishing, skiing and golf.
Polarized sunglasses are usually not ideal for viewing LCD screens, corresponding to those on some cell phones, watches and automobile dashboards. And they mustn't be worn while driving at night to cut back the glare of oncoming vehicles. Although there are glasses that claim to enhance vision for night driving, they really can. less vision because they reduce the quantity of sunshine reaching the attention.
It's vital to notice that polarized lenses alone don't protect against the sun's ultraviolet (UV) light. For this, that you must select sunglasses that also offer UV protection. Also, not all sunglasses with UV protection are polarized.
Tips for Buying Polarized Sunglasses
Here are just a few things to think about when buying polarized sunglasses:
- Choose your favorite color. Polarized sunglasses are at all times tinted to a point. Some are darker than others, but darker doesn't necessarily mean higher.
- Go for larger lenses. The larger the lens, the greater the advantages of polarization.
- Protect your eyes from the harmful rays of the sun. Check the label on polarized sunglasses to make sure that they supply adequate UV protection.