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Related Experiment Videos

Photorefractive keratectomy in children.

William F Astle1, Peter T Huang, Anna L Ells

  • 1Alberta Children's Hospital, University of Calgary, Division of Ophthalmology, Calgary, Alberta, Canada.

Journal of Cataract and Refractive Surgery
|May 31, 2002
PubMed
Summary

Photorefractive keratectomy (PRK) effectively treats high myopia and amblyopia in children when other methods fail. This laser eye surgery significantly improves vision and daily functioning for pediatric patients.

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Area of Science:

  • Ophthalmology
  • Pediatric eye care
  • Refractive surgery

Background:

  • Pediatric myopic anisometropic amblyopia and high myopia often resist traditional treatments.
  • Effective interventions are crucial for long-term visual development in children.

Purpose of the Study:

  • To assess the efficacy of photorefractive keratectomy (PRK) for pediatric patients.
  • To evaluate PRK outcomes in cases of treatment-resistant myopic anisometropic amblyopia and high myopia.

Main Methods:

  • PRK was performed on 40 eyes of 27 pediatric patients under general anesthesia.
  • Patients were categorized into groups based on myopia type: anisometropic amblyopia, bilateral high myopia, post-keratoplasty, and combined corneal scarring/amblyopia.
  • The VISX 20/20 B laser with a multizone, multipass ablation technique was used, with myopia up to -25.00 D SE treated (max -17.50 D SE).

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Main Results:

  • Mean spherical equivalent (SE) improved from -10.68 D to -1.37 D at 1 year (mean change -9.31 D).
  • Mean best-corrected visual acuity improved from 20/70 to 20/40; 40% of eyes achieved +/-1.0 D of target refraction.
  • Functional vision surveys indicated a positive impact on children's daily activities post-treatment, with 59.5% of eyes showing no haze.

Conclusions:

  • PRK offers a viable long-term solution for pediatric high myopia and myopic anisometropic amblyopia.
  • The procedure demonstrates significant visual acuity improvement and functional benefits in children.
  • PRK provides an alternative treatment option for complex pediatric refractive errors.