کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4018400 1261996 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficacy of laser in situ keratomileusis in correcting anterior and non-anterior corneal astigmatism: Comparative study
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی چشم پزشکی
پیش نمایش صفحه اول مقاله
Efficacy of laser in situ keratomileusis in correcting anterior and non-anterior corneal astigmatism: Comparative study
چکیده انگلیسی

PurposeTo compare the efficacy of conventional laser in situ keratomileusis (LASIK) in treating corneal astigmatism and in treating noncorneal ocular residual astigmatism.SettingPrivate practice, Nashville, Tennessee, USA.DesignRetrospective case series.MethodsThe records of dominant eyes of consecutive patients who had LASIK were retrospectively analyzed to compare the efficacy of LASIK in eyes with predominantly anterior corneal astigmatism with the efficacy in eyes with predominantly ocular residual astigmatism (ORA). The ORA was determined by vector analysis using refractive cylinder and topographic astigmatism. Preoperatively, the ratio of ORA to preoperative refractive cylinder (R) was used to divide the patients into 2 groups; that is, eyes with predominantly anterior corneal astigmatism (ORA/R ratio <1.0) and eyes with predominantly ORA (ORA/R ratio ≥1.0). Efficacy was determined by examining the magnitude of the remaining uncorrected astigmatism and comparing the index of success (proportion of preoperative refractive astigmatism that remained uncorrected by LASIK) between the 2 groups.ResultsThe study evaluated 61 eyes of 61 patients. Conventional LASIK was twice as efficacious in the low-ORA group as in the high-ORA group. The index of success was 0.24 and 0.50, respectively, and the difference between groups was statistically significant (P = .036).ConclusionThe efficacy of astigmatic correction by LASIK was significantly higher in eyes in which the preoperative refractive astigmatism was located mainly on the anterior corneal surface than in eyes in which it was mainly located posterior to the anterior corneal surface.Financial DisclosureNo author has a financial or proprietary interest in any material or method mentioned.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cataract & Refractive Surgery - Volume 36, Issue 10, October 2010, Pages 1745–1752
نویسندگان
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