Cr 39 is the name of the monomer base that makes up the lens material in inexpensive plastic lenses. The difference a high index lens material can make. Owned by ppg this material revolutionized lens making.
Polycarbonate Wikipedia
Both eyeglass lens materials are light and impact resistant.
Gary heiting helps you compare polycarbonate vs.
Trivex lenses to see which is best for you. Night driving glasses with clear polycarbonate double sided anti reflective coating scratch coating and uv protection contemporary plastic frame that has spring. Polycarbonate vs plastic plastic plastic is a polymer that has a large molecular mass. The monomers of plastic can be natural or synthetic.
Plastic is synthesized.
Driving at night can be a real challenge. There are glasses for night driving that cut down on headlight glare and add contrast to objects and roads. Wearing eyeglasses is one of the simplest ways to correct vision problems. Lenses are available in glass regular and high index plastic and polycarbonate.
A corrective lens is a lens typically worn in front of the eye to improve vision.
The most common use is to treat refractive errors. Check out the largest collection of online rx eyewear. Branded designer reading glasses available for men women and children.
