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Surgically induced astigmatism following trabeculectomy

Authors
 Gyu Ah Kim  ;  Si Hyung Lee  ;  Sang Yeop Lee  ;  Hee Jung Kwon  ;  Hyoung Won Bae  ;  Gong Je Seong  ;  Chan Yun Kim 
Citation
 Eye, Vol.32 : 1265-1270, 2018 
Journal Title
 Eye 
ISSN
 0950-222X 
Issue Date
2018
Abstract
PURPOSE: Surgically induced astigmatism (SIA) has attracted much interest in recent times because changes in corneal astigmatism can lead to decreased uncorrected visual acuity and patient discomfort. This study aimed to evaluate SIA and to identify factors correlated therewith after trabeculectomy. METHODS: We retrospectively reviewed medical charts of patients who were treated with trabeculectomy at 120° meridian (superotemporal area on right eye and superonasal area on left eye) by the same surgeon. Preoperative keratometric data were compared with data collected from 2 months to 12 months postoperatively. SIA was evaluated using Naeser's polar value analysis. RESULTS: Using Naeser's method, ΔKP(120) was calculated as 0.7 ± 0.7 (0.82@104°), which indicates a with-the-rule change. After surgery, the combined mean polar values changed significantly (Hotelling T2 = 22.47; p < 0.001). Multivariate analysis of variance indicated that postoperative intraocular pressure and location of surgery were independent factors that were significantly associated with SIA (p = 0.002 and 0.03, respectively). CONCLUSIONS: Trabeculectomy at the 120° meridian was not astigmatically neutral. In addition, the SIA after trabeculectomy appears to be greater in eyes with low postoperative intraocular pressure and a superonasal surgical wound rather than a superotemporal wound.
Full Text
http://www.nature.com/articles/s41433-018-0072-9
DOI
10.1038/s41433-018-0072-9
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
김규아(Kim, Gyuah)
김찬윤(Kim, Chan Yun) ORCID logo https://orcid.org/0000-0002-8373-9999
배형원(Bae, Hyoung Won) ORCID logo https://orcid.org/0000-0002-8421-5636
성공제(Seong, Gong Je) ORCID logo https://orcid.org/0000-0002-5456-4296
이상엽(Lee, Sang Yeop) ORCID logo https://orcid.org/0000-0002-3834-7953
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/163212
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