Sunglasses
100% Satisfaction Guaranteed
Call Toll Free: (888) 220-7751
Cart   |   My Account   |   Help
Home Oakley Spy Optic Smith Optic Maui Jim Fox Eyewear Dragon Serengeti Ray Ban
Costa Del Mar Prada Bolle Arnette Action Optics Electric Nixon Watches Suncloud Optics

How Sunglasses Work

The concept of sunglasses seems quite simple, a couple of darkened lenses in a frame to block out the sunlight. However, there is more to sunglasses these days and good modern sunglasses work in four major ways.

  • Provide protection from UV (ultraviolet) rays. UV rays are emitted by sunlight and can damage the retina and cornea in the eye. A good pair of sunglasses can completely block out all UV rays. Beware of cheap sunglasses however as these can do more damage than good. Cheap sunglasses block some light, allowing your iris to expand but do not block UV rays and therefore increase your exposure to UV rays.
  • Provide protection from glare. Glare is caused when sunlight reflects off certain surfaces such as snow or water. These reflections can cause distractions or even obscure areas of vision completely. Good sunglasses can remove 100% of glare. This is done by something known as polarization.
  • Provide protection from intense lights. Intense light can be very dangerous to the eye. When too much light is getting into your eyes, the iris starts to close but this can only close so far. If there is still too much light then you begin to squint in an attempt to block out some more. If after all this, still too much light is entering the eye, then retina starts being damaged and can lead to permanent eyesight problems. A good pair of sunglasses can reduce the amount of light entering the eyes by as much as 97%, vastly reducing the possibility of eye damage.
  • Block specific light frequencies. There are particular frequencies of light that can blur your vision or increase viewing contrast. By choosing the right color for your sunglasses you can tailor them to specific requirements. e.g. Fishing, skiing.

In general, sunglasses allow some light to be transmitted and some light is reflected away. This occurs at various stages - as the light hits the outside of the lens, the interior of the lens, and the back of the lens. Sunglasses are classified by tint, light transmittance and UV absorption.

Search

Information

Join our mailing list
 
Get the latest offers and coupons!


Secure and Trusted

HACKER SAFE certified sites prevent over 99.9% of hacker crime.
GeoTrust
BizRate Customer Certified (GOLD) Site Read Your Store Reviews

Sunglasses Internationale
16266 #4 San Carlos Blvd., Ft. Myers, Florida 33908
© Copyright 1998-09. All Rights Reserved.
Toll Free Order Line (888) 220-7751
Found a problem on this page? Let us know!

Some of our most popular pages:

Oakley sunglasses 
Serengeti sunglasses
 Maui Jim sunglasses

Oakley Half Jacket    
Maui Jim Hookipa    
Oakley Thump MP3 player
Smith sunglasses    
 Sunglasses Sitemap 1Sunglasses Sitemap 2Sunglasses Sitemap 3Sunglasses Sitemap 4 | Oakley Sunglasses Links  | Sunglasses Links