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[Cutting edges after automatic lamellar keratotomy]

F Wilhelm1, T Giessmann, R Hanschke

  • 1Universitätsaugenklinik Halle.

Klinische Monatsblatter Fur Augenheilkunde
|January 15, 1999
PubMed
Summary

Different microkeratomes used for automatic lamellar keratotomy produce distinct cutting edge characteristics. A smoother edge, crucial for surgical outcomes, is associated with specific device settings like lower feed rates.

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Area of Science:

  • Ophthalmology
  • Surgical Technology
  • Biomedical Engineering

Context:

  • Automatic lamellar keratotomy (ALK) relies on microkeratomes, devices with varying technical specifications.
  • Understanding microkeratome performance is essential for optimizing ALK procedures.
  • Corneal tissue quality is directly impacted by the precision of the microkeratome's cutting edge.

Purpose:

  • To investigate if distinct microkeratome models exhibit unique cutting edge characteristics.
  • To explore potential correlations between specific technical parameters and the quality of the corneal cut.
  • To evaluate the cutting edge quality produced by seven different microkeratomes used in Germany.

Summary:

  • Seven microkeratomes were tested on pig eyes using scanning electron microscopy to assess cutting edge smoothness and sharpness.
  • The MKM-System, Universal Keratome, and BK-Microkeratome Set produced predominantly smooth edges.
  • The Automatic Corneal Shaper, Microtech-Mikrokeratom, Rotor-Keratom, and Schwind-Mikrokeratom largely resulted in saw-toothed edges.

Impact:

  • Cutting edge quality in ALK appears influenced by the interplay between the speed of the pass and blade oscillation/rotation rate.
  • Lower feed rates during oscillation/rotation may lead to a smoother cutting edge pattern.
  • These findings can inform the selection and use of microkeratomes to improve surgical outcomes in lamellar keratoplasty.

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