Controlled transscleral drug delivery formulations to the eye: establishing new concepts and paradigms in ocular anti-inflammatory therapeutics and antibacterial prophylaxis

Expert Opinion on Drug Delivery
Fernando PaganelliBrazilian Ocular Pharmacology and Pharmaceutical Technology Research Group

Abstract

The use of topical agents poses unique and challenging hurdles for drug delivery. Topical steroids effectively control ocular inflammation, but are associated with the well-recognized dilemma of patient compliance. Although administration of topical antimicrobials as prophylaxis is acceptable among ophthalmologists, this common practice has no sound evidence base. Developing a new antimicrobial agent or delivery strategy with enhanced penetration by considering the anatomical and physiological constraints exerted by the barriers of the eye is not a commonly perceived strategy. Exploiting the permeability of the sclera, subconjunctival routes may offer a promising alternative for enhanced drug delivery and tissue targeting. Ocular drug delivery strategies were reviewed for ocular inflammation and infections clinically adopted for newer class of antimicrobials, which use a multipronged approach to limit risks of endophthalmitis. The analysis substantiates a new transscleral drug delivery therapeutic approach for cataract surgery. A new anti-inflammatory and anti-infective paradigm that frees the patient from the nuisance of topical therapeutics is introduced, opening a large investigative avenue for future improved therapies.

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Citations

May 14, 2014·Progress in Retinal and Eye Research·Rocío Herrero-VanrellIrene Teresa Molina-Martínez
Nov 15, 2012·International Journal of Pharmaceutics·Maria D Moya-OrtegaThorsteinn Loftsson
Jan 13, 2015·Journal of Controlled Release : Official Journal of the Controlled Release Society·Viet Anh Nguyen HuuAdah Almutairi

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