科里奥利加速度对人眼暗焦点变化的影响

The change of dark focus following Coriolis acceleration stimulation

目的 观察人体受科里奥利加速度作用时眼暗焦点的变化。 方法 用氦 氖激光视力计游标法测量眼暗焦点 ,在VTS Ⅲ前庭功能检查系统上生成科里奥利加速度 ,34名健康受试者受科里奥利加速度后以Graybiel急性运动病不同严重水平诊断分类标准评定其自主神经反应程度 ,同时在科里奥利加速度作用后即刻和 10min时测量暗焦点的变化。 结果 受科里奥利加速度作用前、作用后即刻和 10min时右眼的暗焦点分别是 - 1 86± 1 19D ,- 2 18± 1 2 6D和 - 2 30± 1 11D ;左眼的暗焦点分别是 - 2 0 3± 1 11D ,- 2 2 9± 1 2 0D和 - 2 4 4± 1 2 0D。受科里奥利加速度后即刻和 10min时的暗焦点都向近视方向内移 (P <0 0 1)。正视眼随自主神经反应程度加重而内移加大。左、右眼之间的暗焦点变化未见显著差异 (P >0 0 5 )。 结论 科里奥利加速度作用使眼暗焦点向近视方向移动并与前庭自主神经反应程度相关。

Objective To explore the change of dark focus after Coriolis acceleration stimulation. Methods Thirty four healthy volunteers (aged 19-29) served as subjects. Coriolis accelerationwas produced by VTS-Ⅲ Vestibular Exam System, and vestibular autonomic reactions of subjects were evaluated with Graybiel’s grading criterion for acute motion sickness severity. Subject’s dark focus was measured with Helim-Neon (He-Ne) laser vernier optometer before, immediate after and 10 min after Coriolis acceleration stimulation. Results The dark focus after Coriolis acceleration stimulation showed an significant inward (myopic) shift (P<0.01) immediately and 10 min after Coriolisacceleration stimulation(-2.18±1.26 D and -2.30±1.11 D for right eye and -2.29±1.20 D, -2.44±1.20 D for left eye respectively) as compared with that before stimulation (-1.86±1.19 D for right eye and -2.03±1.11 D for left eye). For emmetropia subjects the degree of change of dark focus was positively related with degree of vestibular autonomic reaction. No significant different between changes of dark focus of left and right eyes was found. Conclusions Inward shifts (myopic) of dark focus were observed after Coriolis acceleration stimulation, and related with the degreeof vestibular autonomic reaction.