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Lamellar keratoplasty for hyperopia

E E Manche1, A Judge, R K Maloney

  • 1Jules Stein Eye Institute, Los Angeles, CA 90024, USA.

Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|January 1, 1996
PubMed
Summary
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Automated lamellar keratoplasty for hyperopia effectively reduces farsightedness with minimal astigmatism. However, the procedure consistently results in undercorrection, requiring further study for long-term stability.

Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Refractive Surgery

Background:

  • Hyperopic lamellar keratoplasty aims to correct hyperopia by weakening the cornea.
  • The safety and efficacy of this procedure remain uncertain.

Purpose of the Study:

  • To evaluate the safety and efficacy of automated lamellar keratoplasty for hyperopia.
  • To assess the refractive outcomes and visual acuity following the procedure.

Main Methods:

  • Twenty-four eyes underwent hyperopic lamellar keratoplasty using an automated corneal shaper with a flap technique.
  • Patients were followed for 1 to 6 months postoperatively.

Main Results:

  • Six months post-surgery, a mean undercorrection of +1.40 D was observed, with 15 of 17 eyes undercorrected.

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  • No eyes experienced overcorrection; visual acuity remained stable, with no loss of spectacle-corrected lines.
  • Clinically significant epithelial ingrowth occurred in two eyes.

    • Conclusions:

    • Hyperopic lamellar keratoplasty is effective in reducing hyperopia and causes minimal irregular astigmatism.
    • The current nomogram consistently leads to undercorrection.
    • Refractive stability is suggested by 1 month, but longer follow-up is needed.