| Summary: | 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.
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