Ads
related to: types of eyeglass lenses materials examples for adults free shipping program"One of the best online glasses stores..." - TopTenReviews.com
- Glasses for Headaches
Neurolux™ Glasses Can Help Relieve
Headaches & Migraines. Learn More!
- Prescription Sunglasses
Add Your Rx to Stylish Frames.
Save 70% Off of Retail Prices!
- Latest Arrivals
Check Out Our Newest Frames.
Get a Complete Pair from Just $39!
- Blue495 Coating
Help Eyestrain from Digital Devices
Add to Any Pair for Just $44.95!
- Glasses for Headaches
goggles4u.com has been visited by 10K+ users in the past month
Search results
Results from the WOW.Com Content Network
Poly (allyl diglycol carbonate) (PADC) is a plastic commonly used in the manufacture of eyeglass lenses alongside the material PMMA ( polymethyl methacrylate ). The monomer is allyl diglycol carbonate (ADC). The term CR-39 technically refers to the ADC monomer, but is more commonly used to refer to the finished plastic.
The US Food and Drug Administration (FDA) defines soft contact lenses as: made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your ...
Uncoated glasses lens (top) versus lens with anti-reflective coating. The reflection from the coated lens is tinted because the coating works better at some wavelengths than others. An antireflective , antiglare or anti-reflection ( AR ) coating is a type of optical coating applied to the surface of lenses , other optical elements, and ...
Orthokeratology lens. Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia ...
Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.
Low-dispersion glass ( LD glass) is a type of glass with a reduction in chromatic aberration (less rainbow effect). Crown glass is an example of a relatively inexpensive low-dispersion glass. Special low dispersion glass (SLD glass) and extraordinary low-dispersion glass (ELD glass) are glasses with yet lower dispersion (and yet higher price).
Ads
related to: types of eyeglass lenses materials examples for adults free shipping program"One of the best online glasses stores..." - TopTenReviews.com
goggles4u.com has been visited by 10K+ users in the past month