View : 43 Download: 15

Postoperative changes of intermittent exotropia type as classified by 1-hour monocular occlusion

Title
Postoperative changes of intermittent exotropia type as classified by 1-hour monocular occlusion
Authors
Bae S.H.Lee Y.B.Rhiu S.Lee J.Y.Choi M.Y.Paik H.J.Lim K.H.Choi D.G.
Ewha Authors
임기환
SCOPUS Author ID
임기환scopus
Issue Date
2018
Journal Title
PLoS ONE
ISSN
1932-6203JCR Link
Citation
PLoS ONE vol. 13, no. 8
Publisher
Public Library of Science
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Purpose To evaluate postoperative changes of the intermittent exotropia type as classified by 1-hour monocular occlusion test. Design Institutional, retrospective study. Methods We retrospectively reviewed the medical records of 179 patients who had undergone surgery for intermittent exotropia with a postoperative follow-up of 6 months or more. We evaluated the exodeviation obtained before and after 1-hour monocular occlusion preoperatively and again at postoperative 1, 3 and 6 months. Intermittent exotropia was divided into 4 types according to Burian’s classification. The main outcome measure was the distribution of intermittent exotropia type based on 1-hour monocular occlusion in both pre- and postoperative periods. Results Of the 179 patients, 152 (84.9%) were assigned preoperatively to the basic type, 14 (7.8%) to the pseudo-divergence excess type, and 13 (7.8%) to the convergence insufficiency type. At postoperative 1, 3, and 6 months, the exotropia-type distribution was shifted predominantly to the basic type (p<0.001, p = 0.004, p = 0.029, respectively). Among the preoperative basic-type patients, 96.9% maintained that type postoperatively. However, only 18.2 and 11.1% of the pseudo-divergence excess and convergence insufficiency types maintained the same type. The proportions of the basic type had increased at postoperative 6 months, from 87.8 to 95.7% for bilateral lateral rectus (BLR) recession, from 73.7 to 92.3% for unilateral recess-resect (R&R), and from 88.0 to 95.0% for unilateral lateral rectus (ULR) recession. Conclusion The type of intermittent exotropia changed mostly to the basic type postoperatively even as classified after 1-hour monocular occlusion. This finding was consistent regardless of the surgical methods (BLR, ULR recession and R&R). © 2018 Bae et al. 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.
DOI
10.1371/journal.pone.0200592
Appears in Collections:
의과대학 > 의학과 > Journal papers
Files in This Item:
Postoperative changes of intermittent.pdf(776.09 kB) Download
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE