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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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Accelerated versus conventional corneal collagen crosslinking.

Minoru Tomita1, Mariko Mita1, Tukezban Huseynova1

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Journal of Cataract and Refractive Surgery
|May 27, 2014
PubMed
Summary

Accelerated corneal collagen crosslinking (CXL) and conventional CXL show similar safety and effectiveness for keratoconus. The accelerated method offers time benefits for patients and surgeons.

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Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Biomaterials Science

Background:

  • Keratoconus management often involves corneal collagen crosslinking (CXL) to strengthen the cornea.
  • Two main CXL protocols exist: conventional (30 minutes) and accelerated (shorter duration).
  • Direct comparison of outcomes between these CXL methods is crucial for clinical decision-making.

Purpose of the Study:

  • To compare the clinical and biomechanical outcomes of accelerated corneal collagen crosslinking (CXL) versus conventional CXL in patients with keratoconus.
  • To evaluate differences in visual acuity, refractive error, corneal topography, and biomechanical parameters post-procedure.

Main Methods:

  • A comparative study was conducted in a private practice setting.
  • Eyes with keratoconus underwent either accelerated CXL (15-minute soak, 3-minute UVA exposure) or conventional CXL (30-minute soak, 30-minute UVA exposure).
  • Postoperative outcomes including visual acuity, keratometry, corneal morphology, demarcation line, and biomechanical responses were assessed over a 1-year follow-up.

Main Results:

  • No statistically significant differences were observed between accelerated and conventional CXL in terms of visual acuity, manifest refraction, or keratometric readings.
  • Corneal morphology and the presence of a demarcation line were similar in both groups.
  • Corneal biomechanical responses, as measured by specialized devices, did not differ significantly between the two CXL protocols.

Conclusions:

  • Both accelerated and conventional CXL are safe and effective treatments for keratoconus.
  • Accelerated CXL provides a significant time advantage, potentially enhancing patient and surgeon convenience without compromising outcomes.