Newer soft lens materials include silicone-hydrogels to provide more oxygen to your eye while you wear your lenses.
In 1938 perspex (polymethylmethacrylate, or PMMA) began to replace glass in contact lens manufacture.
[5] Soft contact lenses were first produced in 1961 by Czech chemical engineer Otto Wichterle using polyhydroxyethylmethacrylate (pHEMA), a material that achieved long-term commercial application.
[7] The FDA has been considering updating soft contact lens group types and related guidance literature.
[8][9][10] The materials that are classified in the 5 FDA groups include the ones listed in the next 5 sections:[11][12] (Dk x10-11) Below is a list of most contact lens materials on the market, their water percentage, their oxygen permeability rating, and manufacturer brands.