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Related Experiment Video

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Three Different Protocols of Corneal Collagen Crosslinking in Keratoconus: Conventional, Accelerated and Iontophoresis
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Corneal cross-linking: engineering a predictable model.

R Glenn Hepfer1, Changcheng Shi2, Yongren Wu1

  • 1CU-MUSC Bioengineering Program, Department of Bioengineering, Clemson University (CU), Charleston, SC.

Critical Reviews in Biomedical Engineering
|January 20, 2015
PubMed
Summary
This summary is machine-generated.

Corneal collagen cross-linking (CXL) using riboflavin and ultraviolet-A (UVA) light shows variable results for keratoconus. Further understanding is needed to develop patient-specific treatments and predictive models for corneal shape and vision.

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Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Corneal Science

Background:

  • Corneal collagen cross-linking (CXL) is a treatment for keratoconus.
  • CXL utilizes riboflavin and ultraviolet-A (UVA) light to strengthen corneal tissue.
  • It offers an alternative to corneal transplantation for some patients.

Purpose of the Study:

  • To review current techniques for measuring CXL effects on corneal material properties.
  • To highlight challenges in developing predictive mathematical models for CXL outcomes.
  • To emphasize the need for a deeper understanding of CXL for personalized treatment.

Main Methods:

  • Review of existing literature on CXL techniques and outcome measurements.
  • Focus on methods assessing changes in corneal biomechanical properties.
  • Analysis of variations in CXL protocols and their impact.

Main Results:

  • CXL results in keratoconus vary, ranging from disease stabilization to visual acuity improvement.
  • Modifications to the standard CXL protocol, such as transepithelial CXL, are being explored.
  • Measuring material property changes is crucial but challenging.

Conclusions:

  • A comprehensive understanding of CXL's effects is essential for optimizing treatment.
  • Development of precise mathematical models is needed to predict corneal shape and refractive changes.
  • Patient-specific CXL treatments require controlled delivery of riboflavin and UVA light.