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Retreatment of central islands after photorefractive keratectomy
1Departement d'Ophtalmologie, Centre Hospitalier de l'Université Laval, Quebec City, Canada.
Purpose:
To evaluate excimer laser retreatment of central islands and the refractive consequences.
Setting:
Department d'Ophtalmologie, Centre Hospitalier de l'Université Laval, Quebec City, and Sir Mortimer B. Davis Jewish General Hospital, McGill University, Montreal, Canada.
Methods:
In this study, 22 eyes retreated for central islands were retrospectively analyzed. All initial corrections and retreatments were performed with the Chiron Technolas Keracor 116 laser.
Results:
A marked decrease in symptoms was observed in almost all cases. Topographic analysis confirmed these results but revealed persistence of minimal islands in several cases. Retreatment of central islands also induced a small myopic correction. Using a 2.5 mm zone, the mean induced refractive effect was 0.21 diopter of myopic correction per diopter of retreatment.
Conclusion:
Retreatment of central islands appeared safe, was relatively easy, and provided good results with a rapid recovery.