Drug-Eluting Sandwich Hydrogel Lenses Based on Microchamber Film Drug Encapsulation

Area of Science:

• Ophthalmology
• Materials Science
• Drug Delivery Systems

Background:

• Corticosteroids are crucial for managing ocular inflammation.
• Current eye drop delivery methods are often inconvenient and inefficient, leading to potential side effects.
• There is a need for improved drug delivery systems for ophthalmic treatments.

Purpose of the Study:

• To develop and validate a proof-of-concept contact lens-based drug delivery system for corticosteroids.
• To create a sustained and controlled release mechanism for dexamethasone within a hydrogel contact lens.
• To ensure visual clarity is maintained in the contact lens design.

Main Methods:

• Fabrication of a sandwich hydrogel contact lens incorporating a polymer microchamber film using soft lithography.
• Encapsulation of dexamethasone within the microchambers of the contact lens.
• Removal of the microchamber material from the central visual area of the lens.

Main Results:

• The developed contact lens demonstrated sustained and controlled release of dexamethasone.
• The system successfully integrated drug delivery capabilities into a contact lens format.
• The central aperture remained clear, preserving visual function.

Conclusions:

• A novel contact lens-based drug delivery system for corticosteroids has been successfully developed.
• This innovative approach offers a promising alternative to conventional eye drops for treating ocular inflammation.
• The system provides sustained drug release and maintains visual clarity, enhancing patient compliance and therapeutic outcomes.