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Related Experiment Videos

Primary multipoint (segmental) custom ablation.

Howard V Gimbel1, Sandra J Sofinski, Oron S Mahler

  • 1Gimbel Eye Centre, Calgary, Alberta, Canada. hvgimbel@gimbel.com

Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|April 18, 2003
PubMed
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Multipoint (segmental) custom ablation effectively resolved visual symptoms in patients with mixed myopic astigmatism. This refractive surgery technique was safe and did not compromise visual acuity.

Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Corneal Aberrometry

Background:

  • Refractive errors, particularly mixed myopic astigmatism, can cause significant visual symptoms.
  • Custom ablation techniques aim to correct refractive errors with greater precision.
  • Multipoint (segmental) custom ablation offers a tailored approach to corneal reshaping.

Observation:

  • Twelve eyes with mixed myopic astigmatism were treated with multipoint (segmental) custom ablation using the Nidek NAVEX platform.
  • The study evaluated the resolution of visual symptoms and changes in visual acuity and higher-order aberrations.
  • Postoperative assessment included visual acuity and aberrometry measurements.

Findings:

  • All twelve eyes demonstrated resolution of visual symptoms post-treatment.

Related Experiment Videos

  • No patient experienced a loss of two or more lines of best spectacle-corrected visual acuity.
  • The root mean square of higher-order aberrations did not exhibit predictable or reproducible changes postoperatively.

    • Implications:

    • Multipoint (segmental) custom ablation is a safe and effective treatment for mixed myopic astigmatism and associated visual symptoms in select patients.
    • While effective for symptom resolution, changes in higher-order aberrations may not always correlate with subjective visual quality.
    • This approach may offer a valuable option for refractive surgery candidates seeking improved vision quality.