Premium
Assessment of choroidal thickness and retinal nerve fiber layer thickness before and after G training using swept‐source optical coherence tomography
Author(s) -
Kim D.Y.,
Song J.H.,
Kim J.H.,
Hyung S.,
Choi K.,
Kim J.Y.,
Chae J.B.
Publication year - 2016
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2016.0265
Subject(s) - retinal , nerve fiber layer , optical coherence tomography , ophthalmology , medicine , nerve fibre layer , perfusion , nuclear medicine
Purpose To evaluate changes in choroidal thickness before and after gravity resistance training (GRT) by using swept‐source optical coherence tomography (SS‐OCT, Topcon, Tokyo, Japan) data with automated segmentation software. Methods The eyes of 14 healthy volunteers who planned to do gravity resistance training enrolled this study. A three‐dimensional wide scanning protocol with SS‐OCT examination was done at baseline, immediately after gravity resistance training and 15, 30 and 60 min after gravity resistance training. Refractive error and axial length measurement was also done. Results Mean choroidal thickness significantly and transiently decreased immediately (246.22 ± 64.98 μ m, p < 0.001), 15 min (244.65 ± 62.88 μ m, p = 0.001) and 30 min (243.08 ± 61.45, p = 0.001) after GRT, relative to baseline (251.18 ± 63.12 μ m). However, decreased choroidal thickness was increased 1 h after GRT (256.51 ± 9.20 μ m, p = 0.437). Choroidal volume was also transiently decreased after GRT. Mean retinal thickness and retinal nerve fiber layer thickness were not changed after GRT. Conclusions Choroidal thickness significantly but transiently decreased after GRT, which meant choroidal perfusion was transiently decreased. Therefore, the effect of high gravity exposure to choroidal circulation over long period time must be further evaluated.