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Updated: Jun 12, 2025
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Three Different Protocols of Corneal Collagen Crosslinking in Keratoconus: Conventional, Accelerated and Iontophoresis
Published on: November 12, 2015
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Corneal scarring after epithelium-off collagen cross-linking
Radhika Natarajan1, Divya Giridhar
1Department of Cornea and Refractive Surgery, Sankara Nethralaya, Medical Research Foundation, Chennai, Tamil Nadu, India.
Indian Journal of Ophthalmology
|September 19, 2024
Summary
Collagen cross-linking (CXL) effectively treats corneal ectasias but can cause scarring. Understanding procedural and patient factors is key to minimizing post-CXL scar formation and improving outcomes.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Biomaterials Science
Background:
- Collagen cross-linking (CXL) is a primary treatment for keratoconus and corneal ectasia.
- Post-CXL scar formation remains a significant clinical concern.
- Corneal structural weakness and biomechanics influence scar development.
Purpose of the Study:
- To comprehensively review the causes and risk factors for scar formation after epithelium-off CXL.
- To elucidate the multifactorial nature of scarring following corneal cross-linking procedures.
Main Methods:
- Systematic Medline literature search.
- Review of clinical images.
- Analysis of procedural and patient-related variables.
Main Results:
- Procedural factors (UV exposure, riboflavin concentration/type, treatment application) contribute to scarring.
- Patient-specific factors (healing response, genetics, allergies, contact lens wear) also influence scar development.
- Corneal biomechanics and tissue properties are critical in scar pathogenesis.
Conclusions:
- Identifying risk factors is crucial for personalized CXL treatment strategies.
- Optimizing CXL protocols and patient management can mitigate scar formation.
- Regular follow-up and patient education are vital for successful outcomes post-CXL.
