Glasses, also known as eyeglasses (formal) or spectacles, are
frames bearing lenses worn in front of the eyes. They are normally used for vision
correction or eye protection. Safety glasses are a kind of eye protection
against flying debris or against visible and near visible light or radiation. Sunglassesallow better vision in bright daylight, and may protect against damage from
high levels of ultraviolet light. Other types of glasses may be used for
viewing visual information (such as stereoscopy) or simply just for aesthetic
or fashion purposes.
Types of glasses
·
Historical types of glasses
include the pince-nez, monocle, lorgnette, and scissor or
scissors-glasses.
·
Modern glasses are typically
supported by pads on the bridge of the nose and by temple arms (sides) placed
over the ears.
CR-39 lenses are the most common plastic
lenses due to their low weight, high scratch resistance, low dispersion, and low transparency to ultraviolet
and infrared radiation.
Polycarbonate and Trivex lenses are the
lightest and most shatter-resistant, making them the best for impact
protection.
Though modern frames can be both
lightweight and flexible, and new lens materials and optical coatings are
resistant to breakage and scratching, glasses can pose problems during rigorous
sports. Scraping, fracturing, or breakage of the lenses can require repair by a
Licensed Optician professional.
Here at 20/20 Eyeglass Superstore, our goal is to give you the best pairof glasses so that you may see the world around you as clearly as possible. And
what a world there is to see!
Don’t forget if
you are in the State of Florida, you can drop in at any 20/20 EyeglassSuperstore® location in OrangeCity, Winter Park or Melbourne for an eye exam. You can also look up at collection
of designer glasses, sunglasses, etc. We
have A Frame for Every Face and A Price for Every Budget®. We look
forward to seeing you soon.