Correction of Pre-Existing Astigmatism with Phacoemulsification Using Spherical Intraocular Lens and Wave front Guided Surface Ablation: A Retrospective Case Series
Ahmed El-Shehawy *
Department of Ophthalmology, Faculty of Medicine, Kafr-elsheikh University, Kafr-elsheikh, Egypt.
Ahmed El-Massry
Department of Ophthalmology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
Mohamed El- Shorbagy
Department of Ophthalmology, Faculty of Medicine, Tanta University, Tanta, Egypt.
Mohamed Atef
Department of Ophthalmology, Faculty of Medicine, Tanta University, Tanta, Egypt.
Moataz Sabry
Department of Ophthalmology, Faculty of Medicine, Tanta University, Tanta, Egypt.
*Author to whom correspondence should be addressed.
Abstract
Objective: To evaluate safety and efficacy of using spherical intraocular lens followed by wavefront guided surface ablation in correction of preexisting regular corneal astigmatism.
Methods: This retrospective case series study included 20 eyes of 16 patients having visually significant cataracts and co-existing regular corneal astigmatism. The patients underwent phacoemulsification with spherical intraocular lens and wavefront guided PRK three months later.
Results: There was a statistically significant difference for Uncorrected Visual Acuity UCVA, Best Corrected Visual Acuity BCVA, Manifest Refraction Spherical Equivalent MRSE, and refractive astigmatism postoperatively regarding all these parameters (P˂0.05).
Conclusion: Astigmatism correction during or even after cataract surgery is a safe and effective method to improve visual outcomes. Longer period of follow up are required to evaluate stability of this technique and possibility of regression.
Keywords: Astigmatism, phacoemulsification, spherical intraocular lens, wave front guided surface ablation.