management of corneal astigmatism by limbal relaxing incisions during cataract surgery
نویسندگان
چکیده
purpose : to evaluate the safety and efficacy of limbal relaxing incisions (lris) for corneal astigmatism correction during phacoemulsification methods : 24 eyes of 24 patients with the mean age of 65.71 years (range: 55 to 83 years) with senile cataracts and mean corneal astigmatism of 1.9±0.83 diopters (d) (range: 1.5 to 3.5 d) were included in this study. all lris were performed during phacoemulsification by one surgeon. topography indices were recorded preoperatively and postoperatively in months 2 and 6. results : a statistically significant reduction in the mean corneal astigmatism was seen from 1.9±0.83 d preoperatively to 1.4±0.84 d and 1.4±0.92, 2 months and 6 months postoperatively (p<0.001). surgical induced astigmatism (sia) (the amount and axis of astigmatism change induced by the surgery) was 0.90±0.48 at 2 months and 0.96±0.59 at 6 months. correction index (ci) (calculated by determining the ratio sia/ target induced astigmatism (tia) was 0.55±0.41 and 0.57±0.32 at 2 and 6 months, respectively. index of success (ios) (ratio of topographic residual astigmatism and tia) was measured 0.44±0.41 and 0.47±0.32 at months 2 and 6 correspondingly. conclusion : combined lri and phacoemulsification appears to be safe and fairly effective to correct mild to moderate corneal astigmatism. however, under correction is a common limitation that may be further managed by modified nomograms in future studies. iranian journal of ophthalmology 201022(1):15-20 © 2010 by the iranian society of ophthalmology
منابع مشابه
Management of Corneal Astigmatism by Limbal Relaxing Incisions during Cataract Surgery
Purpose: To evaluate the safety and efficacy of limbal relaxing incisions (LRIs) for corneal astigmatism correction during phacoemulsification Methods: 24 eyes of 24 patients with the mean age of 65.71 years (range: 55 to 83 years) with senile cataracts and mean corneal astigmatism of 1.9±0.83 diopters (D) (range: 1.5 to 3.5 D) were included in this study. All LRIs were performed during phacoem...
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PURPOSE To evaluate the reduction of pre-existing corneal astigmatism at the time of cataract surgery with limbal relaxing incisions (LRIs). METHODS A prospective study of two groups of patients (treatment and control) with pre-existing astigmatism>or=1D was performed. The 30 patients in the control group had a temporal clear corneal phacoemulsification and the 32 patients of treatment group ...
متن کاملLimbal relaxing incision during cataract surgery.
Limbal relaxing incisions are one of the more commonly performed procedures with phacoemulsification to correct preexisting astigmatism during cataract surgery. The aim of the study was to evaluate the effect and stability of limbal relaxing incisions in reducing preexisting astigmatism at the time of phacoemulsification. The study included 10 eyes in 12 patients who underwent limbal relaxing i...
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BACKGROUND The limbal relaxing incisions (LRIs) technique is a safe and an inexpensive procedure, which is simple for experts to perform. It can effectively reduce astigmatism and result in a rapid visual rehabilitation. But there are few reports about reducing pre-existing corneal astigmatism by LRI in ICL surgery. Our research was aimed to study the effect of limbal relaxing inci sions during...
متن کاملLong-term outcomes of limbal relaxing incisions during cataract surgery: aberrometric analysis
PURPOSE To compare the final changes in corneal wavefront aberration by limbal relaxing incisions (LRIs) after cataract surgery. METHODS This prospective cumulative interventional nonrandomized case study included cataract and astigmatic patients undergoing LRIs and phaco with intraocular lens implantation. LRIs were planned using Donnenfeld nomogram. The root mean square of corneal wave aber...
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Purpose. To evaluate influencing factors on the residual astigmatism after performing peripheral corneal relaxing incisions (PCRIs) during cataract surgery. Methods. This prospective study included patients who were scheduled for cataract surgery with PCRIs. Optical biometry (IOLMaster 500, Carl Zeiss Meditec AG, Germany) was taken preoperatively, 1 week, 4 months, and 1 year postoperatively. A...
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عنوان ژورنال:
journal of current ophthalmologyجلد ۲۲، شماره ۱، صفحات ۱۵-۲۰
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