Sunglasses are a type of vision protection device that help protect the eye from damaging light. The lenses feature various degrees and types of colored, tinted and polarized glass and plastic. Health care professionals from the UV and blue light eye protection is always recommended to protect your eyes out can cause serious eye problems that some.
For a lot of people, the sun is far too bright and can be uncomfortable. In particular, getting some direct sun while reading print or looking at a computer screen. Athletes participating in biking, skiing and other outdoor activities especially in the winter tend to wear protective eye ware. Not only do they help you see better, but sunglasses block damaging UV rays, protecting your eyes from long term damage that can result in vision degradation.
Since the 1940s, the popularity of fashionable sunglasses, especially on the beach has risen. Sunglasses have also often been associated with celebrities, artists, and famous people in general.
Type of sunglasses:
- flip-up glasses
- micro shades
- over sized
- shutter shades
- tea shades
What's the difference between polarized non-polarized lenses?
Normal sunglasses decrease the intensity of everything by the same amount. Polarized sunglasses can selectively eliminate the reflection from light coming from above the water surface or glare from snow.
A lot of sunglasses that claim to be polarized are actually not. There's an easy test you can do before you buy a pair of sunglasses to make sure they're really polarized. Find a reflective surface, and hold the glasses so that you are viewing the surface through one of the lenses. Next slowly rotate the glasses to a 90-degree angle, if the sunglasses are polarized, you will see a significant diminishing of the glare. If you try this with one polarized lens against another, you can make the lens appear to be completely dark, allowing almost no light through.
How much should I spend?
Just like most things, with sunglasses you get what you pay for. If you're really rough on your sunglasses and aren't outside that much, then paying $20 for a cheap pair is perfectly acceptable. If you're outdoors all the time and are constantly exposing your eyes to the sun, then it's well worth it to invest in a nice pair of polarized shades.
I would recommend only spending a lot of money if you're getting high quality lenses like when buying from brands like Oakley an Ray-Ban. Buying high-fashion brands like prada will get you good looking sunglasses, but they will have almost zero practical use and won't be very effective at blocking out UV radiation, nor are they usually very comfortable.