Bioengineering Approaches for Corneal Regenerative Medicine

Area of Science:

• Ophthalmology
• Regenerative Medicine
• Biomaterials Science

Background:

• Corneal injury, pathology, and aging impair vision by affecting light transmission and focus.
• Current treatments like donor tissue transplantation face limitations including scarcity and rejection risks.
• The cornea's regenerative capacity drives research into novel therapeutic strategies.

Purpose of the Study:

• To review current regenerative approaches for corneal tissue reconstruction.
• To discuss the properties required for effective corneal biomaterials.
• To highlight advancements in tissue engineering for corneal repair.

Main Methods:

• Categorization of regenerative strategies into direct cell/growth factor delivery and scaffold-based cell delivery.
• Review of hydrogel and non-hydrogel scaffolds for corneal regeneration.
• Analysis of various cell types, biomaterials, and techniques employed in corneal tissue engineering.

Main Results:

• Key biomaterial properties for corneal regeneration include mechanical strength, biocompatibility, biodegradability, and optical transparency.
• Mimicking the native corneal extracellular matrix with specific scaffold structures enhances cell integration and differentiation.
• Both cell delivery and scaffold-based methods show potential for restoring corneal structure and function.

Conclusions:

• Tissue engineering and regenerative medicine offer promising avenues for corneal regeneration.
• Clinical translation requires careful consideration of biomaterial properties, sterilization, storage, and shelf-life.
• Further development is needed to create clinically viable engineered corneas.