二维视频分析自发性眨眼时的上眼睑运动。
Two-dimensional video analysis of the upper eyelid motion during spontaneous blinking.
机构信息
*Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil; †Department of Senses Organs, Ophthalmology Unit, Faculty of Medicine, University of Porto, Portugal; and ‡Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil.
出版信息
Ophthalmic Plast Reconstr Surg. 2014 Mar-Apr;30(2):146-51. doi: 10.1097/IOP.0000000000000031.
PURPOSE
To validate and to report the results of a new inexpensive video-based method to measure upper eyelid motion during spontaneous blinks.
METHODS
Spontaneous blinks were simultaneously recorded in 21 healthy adult subjects for 5 minutes with magnetic search coil (MSC) and a portable video system (VDS) composed by a commercial high-speed camera coupled to a laptop computer and a blue light-emitting diode. Agreement between the 2 methods was assessed using qualitative comparison of the eyelid motion traces and Bland-Altman plots.
RESULTS
The blink traces registered with both methods were virtually identical. With the either method, the relationship between amplitude and maximum velocity was well fitted by linear regression with mean r values = 0.81 (MSC) and 0.85 (VDS). Bland-Altman plots showed good agreement between methods. The mean ± SE differences of amplitude (0.06 ± 0.17 mm) and maximum velocity (5.0 ± 3.4 mm/s) were not significant. With the VDS, it was also possible to quantify the horizontal component of the blink movements. The amplitude of the horizontal shift of the eyelid during blinks was 40% of the vertical downward phase of the movement.
CONCLUSIONS
Blinking kinematics can be precisely measured using a simple and inexpensive video system suitable for clinical settings.
目的
验证并报告一种新的、经济实惠的基于视频的方法，用于测量自发性眨眼期间上眼睑运动的结果。
方法
21 名健康成年受试者同时使用磁搜索线圈（MSC）和由商业高速摄像机与笔记本电脑和蓝色发光二极管组成的便携式视频系统（VDS）记录 5 分钟的自发性眨眼。使用定性比较眼睑运动轨迹和 Bland-Altman 图评估两种方法之间的一致性。
结果
两种方法记录的眨眼轨迹几乎完全相同。使用两种方法，振幅和最大速度之间的关系都可以通过线性回归很好地拟合，平均 r 值分别为 0.81（MSC）和 0.85（VDS）。 Bland-Altman 图显示两种方法之间具有良好的一致性。振幅（0.06 ± 0.17 mm）和最大速度（5.0 ± 3.4 mm/s）的平均± SE 差异不显著。使用 VDS，还可以定量测量眨眼运动的水平分量。眨眼期间眼睑水平移动的幅度是运动垂直向下阶段的 40%。
结论
使用适合临床环境的简单且经济实惠的视频系统可以精确测量眨眼运动学。
Zotero 插件