Grip Helena, Jull Gwendolen, Treleaven Julia
Department of Biomedical Engineering and Informatics, University Hospital of Umeå, Umeå, 90185, Sweden.
J Clin Monit Comput. 2009 Feb;23(1):31-40. doi: 10.1007/s10877-009-9160-5. Epub 2009 Feb 7.
Describe reproducibility of a measurement method to investigate deficits in eye-head co-ordination.
Combined recordings of head and eye rotation using wireless motion sensors and electro-oculography (EOG) were used as an initial step towards a method to quantify eye-head co-ordination deficits. Head rotation to the side during gaze fixation and sequential head and eye movements were studied on 20 asymptomatic control subjects and six subjects with chronic whiplash disorders. All included whiplash subjects reported eye disturbances according to a vision symptom questionnaire.
The trial-to-trial reproducibility was moderate to high for 24 of 28 variables (Intraclass Correlation Coefficient 0.44 to 0.87). Velocity gain (ratio of eye and head velocities) was on average close to unity in both groups. Head stability was high in control subjects, while three of six whiplash subjects demonstrated head instability during eye movement. Whiplash subjects also demonstrated a decreased range of head movement during gaze fixation and lower head velocities as compared with the asymptomatics.
The method of combined head and eye motion appears to give accurate, repeatable measurements. Case studies of whiplash subjects indicated deficits in head eye co-ordination. The method could be useful in further clinical research into eye and head movement in those with neck disorders.
描述一种测量方法的可重复性，以研究眼头协调功能障碍。
使用无线运动传感器和眼电图（EOG）联合记录头部和眼睛的转动，作为量化眼头协调功能障碍方法的第一步。对20名无症状对照受试者和6名患有慢性挥鞭伤障碍的受试者进行了注视时头部向一侧转动以及头部和眼睛的顺序运动研究。所有纳入的挥鞭伤受试者根据视觉症状问卷报告有眼部不适。
28个变量中的24个变量的试验间可重复性为中度至高度（组内相关系数0.44至0.87）。两组的速度增益（眼睛与头部速度之比）平均接近1。对照受试者的头部稳定性较高，而6名挥鞭伤受试者中有3名在眼球运动期间表现出头部不稳定。与无症状受试者相比，挥鞭伤受试者在注视时的头部运动范围也减小，头部速度降低。
头部和眼睛运动联合测量方法似乎能提供准确、可重复的测量结果。挥鞭伤受试者的案例研究表明存在眼头协调功能障碍。该方法可能有助于对颈部疾病患者的眼睛和头部运动进行进一步的临床研究。
