Promising management of eye ailments take off effective concentration of drug at the eye for sufficient period of time. Ocular drug delivery is hampered by the barriers protecting the eye. The bioavailability of the active drug substance is often the major hurdle to overcome. Conventional ocular dosage form, including eye drops, are no longer sufficient to combat ocular diseases. This article r...

Efficient ocular drug delivery remains a challenge for pharmaceutical scientists. Most ocular diseases are treated by topical drug application in the form of solutions, suspensions, ointment and other drug delivery devices like inserts, implants, gelling systems, etc. These conventional and novel dosage forms suffer from the problems of poor ocular bioavailability, because of various anatomical...

In the present update on ocular drug delivery system, particulate carrier, the tremendous advances in ocular drug delivery system, the polymers used in particulate carriers for ocular dosage forms, the use of drug complexes and other technological advances are discussed. This review focuses on recent literature regarding mucoadhesive particulate dosage forms with special attention to in vivo st...

Glaucoma is a progressive optic neuropathy and medical therapy is the initial option for the treatment of this potentially blinding condition. Topical instillation of eye drops from the bottle is the most common glaucoma drug delivery form. Due to limited permeability of anterior ocular surface, natural clearance and drainage, eye drops contain large amounts of inactive ingredients. Effective p...

Controlled drug delivery occurs when a polymer is combined with a drug in a such a way that the release profile is predefined. Conventional forms of drug delivery are based on tablets, eye drops, ointments and intravenous solutions. These delivery systems were characterized by an immediate and non controlled kinetics depending essentially on the properties of tissues to absorb drugs.In the last...

Amongst the various routes of drug delivery, the field of ocular drug delivery is one of the most interesting and challenging endeavors facing the pharmaceutical scientist for past 10-20 years. As an isolated organ, eye is very difficult to study from a drug delivery point of view. Despite these limitation, improvements have been made with the objective of maintaining the drug in the biophase f...

The study of ocular drug delivery systems has been one of the most covered topics in drug delivery research. One potential drug carrier solution is the use of materials that are already commercially available in ophthalmic lenses for the correction of refractive errors. In this study, we present a diffusion-based mathematical model in which the parameters can be adjusted based on experimental r...