REVIEW ARTICLE
Year : 2011  |  Volume : 2  |  Issue : 1  |  Page : 3-6

Drug delivery through soft contact lenses: An introduction


1 Department of Chemistry, Ulsan University, Ulsan, South Korea
2 Department of Design and Development, Alfanar Engineering Services India Pvt. Ltd., Chennai, Tamil Nadu, India

Correspondence Address:
Amit Kumar
Department of Design and Development, Alfanar Engineering Services India Pvt. Ltd., KG Galaxy, F-36, 2nd Floor, Second Avenue, Anna Nagar (E)- 600 102, Chennai, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2229-5186.79342

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Current ophthalmic drug delivery systems are insufficient, specifically eye drops, which allow approximately 95% of the drug contained in the drops to be lost due to absorption through the conjunctiva or through the tear drainage. The use of soft contact lenses has been proposed as a method to deliver drugs to the eye in an efficient manner. The contact lenses restrict the drug from being lost to tear drainage by releasing the drug into two tear layers on either side of the contact lens, where it ultimately diffuses into the eye. By using loaded soft contact lenses, continuous drug release for extended period is possible. This paper focuses on the different methods of drug loading used throughout a polymer hydrogel.


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