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Retreatment of central islands after photorefractive keratectomy
1Departement d'Ophtalmologie, Centre Hospitalier de l'Université Laval, Quebec City, Canada.
Journal of Cataract and Refractive Surgery
|February 10, 1999
Summary
Excimer laser retreatment of central islands safely and effectively reduces symptoms with rapid recovery. This procedure also induces a small myopic correction, offering good refractive outcomes.
Area of Science:
- Ophthalmology
- Refractive Surgery
Background:
- Central islands can persist after photorefractive keratectomy.
- These islands may cause visual disturbances and necessitate further treatment.
Purpose of the Study:
- To evaluate the efficacy and refractive outcomes of excimer laser retreatment for central islands.
- To assess the safety and recovery associated with this retreatment procedure.
Main Methods:
- Retrospective analysis of 22 eyes undergoing excimer laser retreatment for central islands.
- All procedures performed using the Chiron Technolas Keracor 116 laser.
- Topographic analysis and refractive error assessment.
Main Results:
- Significant symptom reduction observed in most cases.
- Topographic analysis confirmed island reduction, with minimal persistence in some eyes.
- Retreatment induced a mean myopic correction of 0.21 diopters per diopter of retreatment within a 2.5 mm zone.
Conclusions:
- Excimer laser retreatment of central islands is a safe and effective procedure.
- The technique is relatively easy to perform and leads to good visual results.
- Patients experience rapid recovery following retreatment.