APPLICATION OF PMMA AND PHEMA IN EYE PROTECTING CONTACT LENSES
Journal Title: European Journal of Biomedical and Pharmaceutical Sciences - Year 2017, Vol 4, Issue 12
Abstract
Contact lenses are manufactured by sophisticated polymer, are usually worn during the day time and taken out every night for cleaning. Recently, contact lenses are gaining popularity among lens wearers. Basically, they are three types-soft, hard and gas permeable. Hard contact lenses are made of some variant of polymethyl methacrylate (PMMA) and soft contact lenses are made of poly hydroxyl ethyl methacrylate(PHEMA) which has hydrophilic qualities. For the improvement of soft contact lenses permeability silicon based polymer use is started like poly methylsiloxane (PDMS).Biocompatibility is also very important factor for the use of contact lens.
Authors and Affiliations
D. K. Awasthi
Keywords
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