PURPOSE Currently available ophthalmic drug delivery systems are inefficient and may lead to side effects. To increase efficiency and reduce side effects, the authors propose disposable particle-laden soft contact lenses for ophthalmic drug delivery. METHODS The essential idea is to encapsulate the ophthalmic drug formulations in nanoparticles and to disperse these drug-laden particles in the...

The last fifty years, ophthalmic drug delivery research has made much progress, challenging scientists about the advantages and limitations of this drug delivery approach. Topical eye drops are the most commonly used formulation in ocular drug delivery. Despite the good tolerance for patients, this topical administration is only focus on the anterior ocular diseases and had a high precorneal lo...

The National Health Service is now primary care led. There are different definitions for primary care and in this review they are analysed and related to ophthalmology to produce a working definition for ophthalmic primary care, summarised as the provision of first contact care for all ophthalmic conditions and follow up, preventive, and rehabilitative care of selected ophthalmic conditions, in...

PURPOSE Conventional ophthalmic systems present very low corneal systemic bioavailability due to the nasolacrimal drainage and the difficulty to deliver the drug in the posterior segment of ocular tissue. For these reasons, recent advances have focused on the development of new ophthalmic drug delivery systems. This review provides an insight into the various constraints associated with ocular ...

Over the recent decades, there has been seismic shift in the field of ocular drug delivery ranging from dosage form design to drug product commercialization. Advancements in the fields of nanotechnology, biomedical engineering and clinical science significantly improved the feasibility of ocular drug delivery. Despite these technological advances, there exists need to deliver drugs in therapeut...

Although topical drug delivery is a convenient route of administration to treat various eye diseases, it has serious limitations due to rapid clearance of the formulation from the surface of the eye. In this study, we engineered microparticles for both sustained drug delivery and prolonged residence time on the extraocular surface. Microparticles were fabricated by emulsification using poly(lac...

Liposomal formulations were significantly explored over the last decade for the ophthalmic drug delivery applications. These formulations are mainly composed of phosphatidylcholine (PC) and other constituents such as cholesterol and lipid-conjugated hydrophilic polymers. Liposomes are biodegradable and biocompatible in nature. Current approaches for topical delivery of liposomes are focused on ...

5 Various strategies for ocular drug delivery are considered; from basic formulation techniques for 6 improving availability of drugs; viscosity enhancers and mucoadhesives aid drug retention and 7 penetration enhancers promote drug transport into the eye. The use of drug loaded contact lenses 8 and ocular inserts allows drugs to be better placed where they are needed for more direct 9 delivery...

Treating various ailments of eye utilizes mostly two strategies i.e. delivery of the therapeutic agent by development of a novel delivery system or by enhancing the permeation of therapeutically active agent by the use of penetration enhancers or by the alteration of its physicochemical properties. Conventional ophthalmic drugs delivery system including eye drops, ointments and gels, are no lon...