Topical Ocular Drug Delivery- A Review
The available ocular drug delivery systems are fairly primitive and inefficient, but the stage is set for the rational design of newer and significantly improved systems. This review will discuss the progress of various types of ocular drug delivery systems and their characteristic advantages and limitations of each system, thus improvements can be made to overcome the constraints imposed by the eye. Two main approaches, i.e. improvement in bioavailability and controlled drug delivery systems are discussed. Combination of drug delivery systems could open a new directive for improving the therapeutic response of a non-efficacious system.