Current concepts in crosslinking thin corneas.

Area of Science:

• Ophthalmology
• Corneal Surgery
• Biomedical Engineering

Background:

• Keratoconus is a progressive corneal disease.
• Conventional corneal cross-linking (CXL) is effective but requires a minimum corneal thickness of 400 microns after de-epithelialization.
• Many keratoconic corneas, especially in moderate-to-advanced stages, fall below this threshold.

Purpose of the Study:

• To review and update modifications of conventional CXL specifically for thin corneas.
• To address the challenge of treating keratoconus in corneas with reduced thickness.
• To explore techniques that circumvent the 400-micron limitation while avoiding complications.

Main Methods:

• Review of existing literature on modified CXL techniques for thin corneas.
• Analysis of different approaches to achieve CXL in corneas <400 microns.
• Discussion of safety and efficacy of these modifications.

Main Results:

• Several modifications to conventional CXL exist for thin corneas.
• These techniques aim to achieve stromal cross-linking without compromising endothelial safety.
• The review synthesizes current strategies for managing thin corneas in keratoconus treatment.

Conclusions:

• Modified CXL techniques offer viable solutions for treating keratoconus in eyes with thin corneas.
• These adaptations expand the applicability of CXL to a broader patient population.
• Further research may refine these methods for optimal outcomes in thin corneas.