It reduces the burden to your nose. It applies to driving, fishing, travelling and other outdoor activities.
Polarized sunglasses are designed to vertically filter out glare from sunlight or bright lights. Self-tinting, or transitional lenses, are lenses that turn brighter or darker depending on the intensity of sunlight hitting the lenses.
cause there are two eyes so two lenses in the sunglasses
The sunglasses with huge lenses are very trendy these days.
Photochromic lenses.
Unfortunately, if you scratch your sunglass lenses - you will need to replace the lenses completely as the scratches cannot be polished out. If you purchase a pair of designer sunglasses from a reputable supplier, they can usually order replacement lenses for you.
Crystallens lenses on Ray-Ban sunglasses are optical devices. These transmit and refracts light which converges and diverges the beam.
To clean the lenses on your sunglasses you should wash them with warm water and mild soap and dry them with a non-abrasive cloth.
Anon Legion Sunglasses have lenses made from scratch resistant material.
If you get your sunglasses with a good designer frame and prescription-ground lenses to correct your vision (if you need it), you might pay $300 to $500. But you can get good non-prescription sunglasses for $100. (U.S. Dollars)
There are several levels of protection that these sunglasses have to offer. You can tell the difference by the color of the lenses. You will be protected from the sun if you choose to purchase these sunglasses.
Frames4U, Goggles Direct! and Zenni Optical all offer prescription sunglasses - and lenses - online.
The Lenses are made of Ruby Quartz