國家衛生研究院 NHRI:Item 3990099045/1531

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Title:	Linear-long incisions with a small optical zone for the correction of astigmatism in older patients
Authors:	Ho, HC;Chen, KH;Hsu, WM;Lee, SM;Chiang, CC;Li, YS
Contributors:	Division of Medical Engineering Research
Abstract:	Purpose: To evaluate the efficacy of astigmatic keratotomy (AK) by paired linear (transverse)-long incisions within a small optical zone in older patients with 3.00 diopters (D) or more of astigmatism who are intolerant of contact lenses, spectacles, or both. Design: Prospective, noncomparative case series. Participants: Twenty-one eyes (20 patients; age range, 58-87 years) treated at clinics of the Taipei Veterans General Hospital were included in this study. Methods: Paired linear incisions (900 in length) with a central optical zone (OZ) of 4.5 mm were made to correct high astigmatism in older patients. The incisions were 80% of the corneal thickness and parallel to the axis of the steepest cylinder. Main Outcome Measures: Refraction, keratometry, corneal topography, and visual acuity with and without correction were measured as the outcome indicators. Results: The mean course of the stabilization of corneal curvature was 1.8 months. Significant improvement from a preoperative corneal astigmatism of 4.52+/-1.39 D to a postoperative value of 1.82+/-0.88 D (P<0.0001) was shown. Marked axis deviations of more than 30&DEG; were observed in 5 cases and corneal perforation was observed in 1 case. When the corneal curvature stabilized, uncorrected visual acuity was improved by 2 lines or more in 15 eyes (71.4%). Spherical equivalents and best-corrected visual acuity did not change significantly. Postoperative glare was absent in all patients. Conclusions: We conclude that AK by linear-long incisions extending from a small OZ is effective and safe for correcting astigmatism.
Keywords:	Ophthalmology
Date:	2004-01
Relation:	Ophthalmology. 2004 Jan;111(1):28-33.
Link to:	http://dx.doi.org/10.1016/j.ophtha.2003.04.008
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0161-6420&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000187806800006
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0346787902
Appears in Collections:	[Others] Conference Papers/Meeting Abstract

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