TY - JOUR
T1 - Measurement of the Angle of Exodeviation With Polarized Glasses in Intermittent Exotropia
AU - Ha, Suk Gyu
AU - Kim, Seung Hyun
N1 - Publisher Copyright:
© 2019 Elsevier Inc.
PY - 2020/3
Y1 - 2020/3
N2 - Purpose: The purpose of this study was to investigate if the angle of deviation with Polarized glasses is effective for measuring maximal angles in patients with intermittent exotropia (IXT). Design: Prospective cross-sectional study. Methods: This study was conducted on patients with >10 prism diopters (PD) of basic-type IXT at distance and near. Three consecutive, different methods for measurement of the angle of deviation were used: alternate prism cover test (ACT), ACT with Polarized glasses (Polaroid test), and ACT after 1 hour of monocular occlusion (occlusion test). Comparison of the 3 methods of measurement was conducted using the Friedman repeated ANOVA and Wilcoxon signed rank test. Results: A total of 60 patients were included in this study. Thirty (50%) patients were male. Mean age was 8.7 ± 5.1 years (range, 4-37 years) and measurements by ACT at distance and near were 25.2 ± 8.0 PD and 25.4 ± 8.2 PD, respectively. Angles of Polaroid and occlusion tests (29.0 ± 8.6 PD vs 30.6 ± 8.1 PD) were significantly increased compared to that of ACT at distance (P <.01), and there was no significant change between angles of Polaroid and occlusion tests at distance (P =.06). However, there was no significant change between angles of ACT and Polaroid tests (25.4 ± 8.2 PD vs 26.9 ± 8.1 PD) at near (P =.07). Conclusion: The angle of deviation with Polarized glasses at distance increased and was comparable to that after the monocular occlusion test. The angle of exodeviation with Polarized glasses may be an easy, simple and effective alternative to measurement of maximum angle of deviation in IXT.
AB - Purpose: The purpose of this study was to investigate if the angle of deviation with Polarized glasses is effective for measuring maximal angles in patients with intermittent exotropia (IXT). Design: Prospective cross-sectional study. Methods: This study was conducted on patients with >10 prism diopters (PD) of basic-type IXT at distance and near. Three consecutive, different methods for measurement of the angle of deviation were used: alternate prism cover test (ACT), ACT with Polarized glasses (Polaroid test), and ACT after 1 hour of monocular occlusion (occlusion test). Comparison of the 3 methods of measurement was conducted using the Friedman repeated ANOVA and Wilcoxon signed rank test. Results: A total of 60 patients were included in this study. Thirty (50%) patients were male. Mean age was 8.7 ± 5.1 years (range, 4-37 years) and measurements by ACT at distance and near were 25.2 ± 8.0 PD and 25.4 ± 8.2 PD, respectively. Angles of Polaroid and occlusion tests (29.0 ± 8.6 PD vs 30.6 ± 8.1 PD) were significantly increased compared to that of ACT at distance (P <.01), and there was no significant change between angles of Polaroid and occlusion tests at distance (P =.06). However, there was no significant change between angles of ACT and Polaroid tests (25.4 ± 8.2 PD vs 26.9 ± 8.1 PD) at near (P =.07). Conclusion: The angle of deviation with Polarized glasses at distance increased and was comparable to that after the monocular occlusion test. The angle of exodeviation with Polarized glasses may be an easy, simple and effective alternative to measurement of maximum angle of deviation in IXT.
UR - http://www.scopus.com/inward/record.url?scp=85077169118&partnerID=8YFLogxK
U2 - 10.1016/j.ajo.2019.10.029
DO - 10.1016/j.ajo.2019.10.029
M3 - Article
C2 - 31712065
AN - SCOPUS:85077169118
VL - 211
SP - 94
EP - 97
JO - American Journal of Ophthalmology
JF - American Journal of Ophthalmology
SN - 0002-9394
ER -