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Nanomedicine (Lond). 2007 Feb;2(1):11-21.

Ocular drug delivery: nanomedicine applications.

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  • 1Laboratory of Pharmaceutical Technology and Biopharmacy, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.


Nanocarriers, such as nanoparticles, liposomes and dendrimers, are used to enhance ocular drug delivery. Easily administered as eye drops, these systems provide a prolonged residence time at the ocular surface after instillation, thus avoiding the clearance mechanisms of the eye. In combination with a controlled drug delivery, it should be possible to develop ocular formulations that provide therapeutic concentrations for a long period of time at the site of action, thereby reducing the dose administered as well as the instillation frequency. In intraocular drug delivery, the same systems can be used to protect and release the drug in a controlled way, reducing the number of injections required. Another potential advantage is the targeting of the drug to the site of action, leading to a decrease in the dose required and a decrease in side effects.

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