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Related Experiment Videos

Bacterial keratitis after radial keratotomy.

A Y Matoba1, J Torres, K R Wilhelmus

  • 1Houston Veterans Administration Medical Center, Houston.

Ophthalmology
|August 1, 1989
PubMed
Summary

This study investigated keratitis (corneal inflammation) following radial keratotomy (RK) surgery. Most patients recovered good vision, but specific bacterial pathogens and corneal locations were noted in infections after RK.

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Area of Science:

  • Ophthalmology
  • Microbiology
  • Surgical Outcomes

Background:

  • Radial keratotomy (RK) is a refractive surgical procedure to correct myopia.
  • Post-keratotomy infections, such as keratitis, can pose a risk to visual outcomes.
  • Understanding the pathogens and clinical presentation of keratitis post-RK is crucial for effective management.

Observation:

  • Nine patients with culture-proven keratitis post-RK were identified.
  • Infections presented as either immediate post-operative or delayed-onset keratitis.
  • Inferior corneal quadrants were the most common site of infection (7/9 patients).

Findings:

  • Gram-positive cocci were the primary pathogens in early-onset keratitis.
  • Gram-negative rods predominated in delayed-onset keratitis (4/6 cases).

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  • Contact lens wear was associated with two delayed-onset cases.
  • Patients with transverse incisions or >8 radial cuts had higher risk.

    • Implications:

    • Prompt diagnosis and targeted antimicrobial therapy are essential for managing keratitis post-RK.
    • Awareness of specific bacterial pathogens based on infection timing can guide treatment.
    • Visual acuity was generally good post-treatment, suggesting favorable outcomes with appropriate care.