Intacs consist of two tiny, clear, ultra-thin, precision-engineered crescents made of the same medical polymer (polymethylmetha-crylate, or PMMA) that has been safely used in eyes for almost 50 years for contact lenses and the intraocular lenses that cataract patients receive. Intacs are designed for permanent placement in the eye, but they also are removable.
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Poly(methyl methacrylate)

Poly(methyl methacrylate), which lazy scientists call PMMA, is a clear plastic, used as a shatterproof replacement for glass. The barrier at the ice rink which keeps hockey pucks from flying in the faces of fans is made of PMMA. The chemical company Rohm and Haas makes windows out of it and calls it Plexiglas. Imperial Chemical Industries also makes it and calls it Lucite. Lucite is used to make the surfaces of hot tubs, sinks, and the ever popular one piece bathtub and shower units, among other things.

PMMA is a member of a family of polymers which chemists call acrylates, but the rest of the world calls acrylics.


Copyright ©1995,1996 | Department of Polymer Science | University of Southern Mississippi
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