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Retreatment of decentered excimer photorefractive keratectomy ablations
R Lim-Bon-Siong1, J M Williams, R F Steinert
1Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St Louis, MO 63110, USA.
Purpose:
To present two cases of excimer photorefractive keratectomy decentration associated with visual distortion secondary to irregular astigmatism.
Method:
Patients were retreated with a repeat photorefractive keratectomy using a technique whereby the circle of adherent epithelium overlying the decentered ablation served as a mask.
Results:
After retreatment, there was significant improvement in the patients' visual symptoms, decreased astigmatism on refraction, and better centration on corneal topography.
Conclusion:
This method appears to offer an effective means to treat photorefractive keratectomy ablation zone decentration by improving the abnormalities introduced by the initial decentration.