Advances in ophthalmic drug delivery

Area of Science:

• Ophthalmology
• Pharmaceutics
• Biomedical Engineering

Background:

• Ocular drug delivery faces challenges due to the eye's anatomy.
• Traditional methods often result in poor drug bioavailability and limited retention.
• Effective treatment of posterior eye diseases remains difficult.

Purpose of the Study:

• To review current and emerging strategies for ocular drug delivery.
• To highlight advancements in overcoming ocular barriers for improved drug efficacy.
• To explore future innovations in sustained and targeted ocular therapies.

Main Methods:

• Review of formulation techniques including viscosity enhancers and mucoadhesives.
• Analysis of drug delivery systems like contact lenses, ocular inserts, and implants.
• Discussion of emerging technologies for long-term and localized drug administration.

Main Results:

• Formulation strategies improve drug availability, retention, and penetration.
• Drug-loaded contact lenses and inserts offer direct and localized drug delivery.
• Ocular implants provide a means for long-term treatment, particularly for posterior segment diseases.

Conclusions:

• Ocular drug delivery has significantly advanced through innovative formulations and devices.
• Implants offer a promising solution for sustained drug release and treating challenging eye conditions.
• Future developments may include artificial corneas and lifetime drug depots, revolutionizing eye care.