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Ab interno radial keratotomy.

A M Mansour1, J J Rowsey, A R Munn

  • 1Department of Ophthalmology, University of Oklahoma, Dean A. McGee Eye Institute, Oklahoma City 73104.

Refractive & Corneal Surgery
|March 1, 1991
PubMed
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This study presents a simplified radial keratotomy technique using a Beaver blade, achieving significant corneal flattening in donor eyes. The modified approach avoids complex instrumentation for radial incisions.

Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Refractive Surgery

Background:

  • Radial keratotomy (RK) is a refractive surgical procedure to correct myopia.
  • Traditional RK techniques often require specialized equipment.
  • A need exists for simplified RK methods.

Purpose of the Study:

  • To describe and evaluate a modified, less instrument-dependent approach to radial keratotomy.
  • To assess the efficacy and safety of this technique in human donor eyes.

Main Methods:

  • A modified radial keratotomy was performed on human donor eyes using a Beaver blade #5910.
  • Incisions were made tangentially from the sclera into the deep stroma, then rotated radially to the epithelium.
  • Eight radial incisions were created per eye.

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Main Results:

  • An average of 8.20 diopters of corneal flattening was achieved (SD = 2.40 D) in 20 donor eyes.
  • Histopathology of incisions in 10 donor eyes showed a mean depth of 58.9% of corneal thickness (SD = 12.4%).

Conclusions:

  • This modified radial keratotomy technique is effective in achieving significant corneal flattening.
  • The procedure can be performed without sophisticated instrumentation, offering a simpler alternative.
  • Further studies are warranted to evaluate clinical applicability.