Aspheric contact lenses are a newer design concept, filling a niche for clearer, crisper vision for certain patient populations. From the early days of hard, unbreathable lenses to the highly oxygen-permeable soft contact lenses of today, aspheric...
Gas permeable contact lenses replaced the use of hard contact lenses. Hard contact lenses, developed during the 1960s, did not allow oxygen to reach the cornea of the eye. Gas permeable contact lenses, however, allow oxygen to reach the cornea...
For contact lens wearers, finding the right lens fit can increase comfort, reduce irritation and improve visual acuity. For those who experience irritation when wearing contacts due to decreased oxygen flow to the cornea, oxygen flow gas permeable...
Permeable gas contact lenses, also known as GP lenses, rigid gas permeable lenses and oxygen permeable lenses hit the market in the late 1970s. Unlike hard contacts that do not allow the eyes to breathe, permeable gas contact lenses allow oxygen...
Eye contact lenses were first developed in the 1960s, and have continually improved. The early contact lenses were known as hard contact lenses. That is, these lenses were rigid. They were made of a plastic called polymethyl methacrylate (PMMA)....
