Abstract
There has been a recent advances in the field of microbiology where hydrogels contact lenses can be extend as the new ophthalmic drug delivery. Rather than the conventional eye drops, these hydrogels can minimize the side effect also prolonged the residence time of drug. Hydrogels are three-dimensional, hydrophilic, and polymeric networks capable of absorbing great volume of water and biological fluid. Hydrogel becomes the leading material for contact lenses because its biocompatibility and transparent characteristic. The purpose of this article is to review on few types of ophthalmic hydrogel in contact lenses and its application.
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