The Changes of Ocular Physiological Parameters after High-G Exposure

• Main Authors: Ying-Liang Chou, 周英樑
• Other Authors: Chung-Long Chou
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/20465191688596498802

碩士 === 國防醫學院 === 航太醫學研究所 === 92 === Introduction. The effect of sustained high-G exposure on ocular hemodynamics and visual function is not clear. Visual biological parameters could vary after high-G exposure. Material & Methods. Nineteen subjects were divided into two groups: a centrifuge group (high-G exposure, n=13) and a control group (n=6). Intraocular pressure (IOP), visual acuity and manifest refraction were measured 30 minutes before centrifugation, 2 minutes, 10 minutes and 20 minutes after centrifugation, respectively. Results. Two subjects were excluded from the experiment because of G tolerance less then 6G. There was no statistical difference in refractive errors in both groups. Most subjects in centrifuge group improved their best corrected visual acuity (BCVA) after high-G exposure. Also high-G exposure made a significant effect on intraocular pressure. Conclusion. IOP reduced after high-G exposure, it might be related to the improvement of visual function.