RESEARCH ARTICLE
Changes of corneal topographic measurements and higher-order aberrations after surgery for exotropia Seok Hyun Bae1, Dong Gyu Choi2* 1 Department of Ophthalmology, Central Physical Examination Office, Daegu, Korea, 2 Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea *
[email protected]
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Purpose To analyze changes in corneal topographic measurements and higher-order aberrations (HOAs) after horizontal muscle surgery for exotropia.
Design OPEN ACCESS Citation: Bae SH, Choi DG (2018) Changes of corneal topographic measurements and higherorder aberrations after surgery for exotropia. PLoS ONE 13(8): e0202864. https://doi.org/10.1371/ journal.pone.0202864 Editor: Ahmed Awadein, Faculty of Medicine, Cairo University, EGYPT Received: June 3, 2018 Accepted: August 10, 2018
Retrospective, observational study.
Methods A total of 131 eyes of 121 patients who had undergone surgery for exotropia were included. The eyes with unilateral lateral rectus (ULR) or bilateral lateral rectus (BLR) recession(s) were assigned to group A, and those with unilateral lateral rectus recession & medial rectus resection (R&R) to group B. Corneal topographic measurements and HOAs were compared between the preoperative and postoperative periods using a Placido-dual Scheimpflug analyzer (Galilei 2TM, Ziemer, Port., Switzerland) for each group.
Published: August 24, 2018 Copyright: © 2018 Bae, Choi. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Data Availability Statement: All relevant data are within the paper and its Supporting Information files. Funding: The authors received no specific funding for this work. Competing interests: The authors have declared that no competing interests exist.
Results In group A, simulated keratometery (sim K) was significantly changed until 3 months postoperatively relative to the preoperative value (postoperative 1 week, p = 0.017; 1 month, p = 0.037; and 3 months, p = 0.023, respectively). All steep K (steep sim K, steep-Kpost, and TCP-steep K) parameters also were significantly changed at postoperative 1 month (p
