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Development of hydrogel-based keratoprostheses: a materials perspective.

David Myung¹, Pierre-Emile Duhamel, Jennifer R Cochran

¹Department of Ophthalmology, Stanford University, Stanford, California 94305, USA.

Biotechnology Progress

|April 22, 2008

Summary

Advancements in artificial corneas (keratoprostheses) utilize hydrogels for better integration and function. Synthetic donor corneas mimicking natural properties are nearing clinical reality.

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Area of Science:

Biomaterials Science
Ophthalmic Engineering
Polymer Chemistry

Background:

Artificial corneas (keratoprostheses) have evolved from rigid plastics to advanced hydrogels.
Modern hydrogels aim to mimic natural cornea properties like tissue integration, glucose diffusion, and epithelialization.

Purpose of the Study:

To critically review material science approaches for developing advanced hydrogel keratoprostheses.
To assess progress towards synthetic donor corneas that support surface epithelialization.

Main Methods:

Review of various hydrogel material preparation strategies: synthetic polymers, bio-copolymers, and interpenetrating polymer networks.
Analysis of experimental results from different hydrogel keratoprosthesis designs.

Main Results:

Hydrogel-based keratoprostheses show promise in supporting peripheral tissue integration and glucose diffusion.
Diverse material strategies are being explored to replicate natural cornea functionality.

Conclusions:

Significant progress has been made in developing hydrogel materials for artificial corneas.
Synthetic donor corneas capable of surface epithelialization are closer to clinical application despite remaining challenges.