A New Model for Predicting Ectasia Accounting for the imperfections of your surgical instruments can help you to avoid excessive keratectomy during LASIK
نویسنده
چکیده
O ver the years, refractive surgeons have devised strategies for coping with some of the more common complications that can occur after LASIK. Nonetheless, ectasia, a condition characterized by a progressive increase in corneal curvature, remains somewhat of a mystery. Its most likely causes appear to be undetected preoperative keratoconus and excessively deep keratectomies. This article presents a model for calculating the minimal residual stromal thickness required to maintain corneal structural integrity.1 When this model is applied to an individual eye, it may help surgeons predict the risk of developing post-LASIK ectasia.2
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A thirty-nine year old man was referred to our institute due to progressive decreased visual acuity five years after bilateral Laser in situ Keratomileusis (LASIK). Topography revealed signs of post - LASIK ectasia. Patients' left eye was treated with simultaneous Topography Guided Photorefractive Keratectomy (PRK) followed by Corneal Collagen Cross Linking (CXL). Twelve months after the combin...
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PURPOSE To report a case of corneal ectasia following hyperopic laser in situ keratomileusis in a patient who had previous laser thermal keratoplasty. METHODS Case report. RESULTS We report a case of a 66-year-old emmetropic man initially presented with complaint of difficulty reading without correction. Laser thermal keratoplasty (LTK) was performed on the non-dominant right eye, resulting...
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