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Related Experiment Videos

Excimer laser photorefractive keratectomy for hyperopia

J P Danjoux1, R S Kalski, P Cohen

  • 1Sydney Refractive Surgery Centre, St Leonards, New South Wales, Australia.

Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|July 1, 1997
PubMed
Summary
This summary is machine-generated.

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Excimer laser correction for hyperopia resulted in overcorrection, which stabilized after three months. Algorithms need adjustment for more accurate hyperopia treatment with excimer lasers.

Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Laser Technology

Background:

  • Hyperopia correction presents challenges in achieving precise refractive outcomes.
  • Excimer laser technology offers a potential solution for refractive errors.

Purpose of the Study:

  • To prospectively evaluate the efficacy and outcomes of excimer laser correction for hyperopia.
  • To assess refractive stability and visual quality following hyperopic correction.

Main Methods:

  • Eleven hyperopic eyes underwent excimer laser correction using the Summit Technology SVS Apex Plus.
  • Data included refraction, visual acuity, contrast sensitivity, and corneal topography.
  • Mean attempted correction was +3.09 D, with initial refraction at +5.80 D.

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Main Results:

  • A mean overcorrection of +3.18 D was observed at 1 month, regressing to +1.88 D by 3 months.
  • Refraction stabilized after 3 months, with no significant fluctuations thereafter.
  • Corneal changes mirrored attempted correction, stabilizing by 6 months.

Conclusions:

  • Achieved hyperopic correction exceeded expectations, indicating a need for algorithm adjustments.
  • The excimer laser system is effective for treating low to moderate hyperopia.