Safety glasses can vary in the levels of protection they provide.
Safety glasses are made with
shatter-resistant plastic lenses. The main difference between safety
glasses and regular glasses is their resistance to impact.
Safety glasses are high quality glasses which are light and comfortable
with very little or no optical distortion. Contact lenses may be worn
with safety glasses.
Safety glasses are no longer made with thick "geeky-looking" lenses.
They are lighter weight and more stylish than they were years ago, not
to mention safer and more comfortable. They can also be made with the
logo of your favorite college or professional sports team.
Safety glasses are generally made from one of these three materials:
Crown Glass, CR (Columbia Resin) "plastic lenses," and Polycarbonate
(also known as "PC"). Polycarbonate lenses offer the best protection
from both UVA and UVA radiation. Unlike polycarbonate lenses, the
plastic lenses cannot be molded or bent when heated. Nearly all lenses
are now made with polycarbonate.
Polycarbonate Safety Glasses
Polycarbonate (PC) is a crystal clear and colorless engineering
thermoplastic known for its high impact resistance. PC was originally
developed for the aerospace industry to be used in windows for airlines,
space shuttles and face shields for astronaut helmets.
Polycarbonate is the most impact resistant lens material available
today. When compared to glass or CR-39 Plastic, polycarbonate offers
significantly greater protection and safety for your eyes.
PC is a very soft material and will not crack or break during an impact.
In manufacturing PC an enormous amount of pressure is used to compress
the raw
material. It holds up well under impact because it is flexible and gives
slightly under pressure without breaking. PC lenses are constructed out
of material that is identical to what is called "bulletproof glass."
Prescription
Safety Glasses
Prescription safety glasses can be customized to fit your face
perfectly, utilizing your eyeglasses prescription. Prescription safety
glasses allow you to safely perform work, hobby or athletic activities
without wearing two pairs of glasses. Prescription safety glasses are
also great for those people who do not enjoy wearing contacts but need
glasses and are required to wear safety glasses.
Lenses are available in a wide variety of optional coatings/features: Single Vision, Bifocal, Trifocal, Occupational, and Progressive Lenses (No-Line Bifocals).
More information about safety glasses
- More information about the many types of safety Glasses
- Safety glasses terminology
- Levels of protection for safety glasses
- Maintenance of safety glasses
News and information from across the web about safety:
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