INTERACTION OF EYELIDS AND TEARS IN CORNEAL WETTING AND THE DYNAMICS OF THE NORMAL HUMAN EYEBLINK
INTERACTION OF EYELIDS AND TEARS IN CORNEAL WETTING AND THE DYNAMICS OF THE NORMAL HUMAN EYEBLINK
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DOI：
10.1016/0002-9394(80)90058-6
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发表时间：
1980-01-01
影响因子：
4.2
通讯作者：
DOANE, MG
中科院分区：
文献类型：
--
作者：
DOANE, MG
利用高速摄像系统研究了人眨眼的眼睑运动动力学。电影是从一个隐藏的位置通过一个单向镜。记录正常的非强迫性眨眼。上眼睑的下降在其穿过视轴时达到最大速度，通常在17-20 cm/s的范围内，但偶尔达到超过40 cm/s的速度。下眼睑的运动主要是水平的，以鼻向运动，总位移在2-5 mm的范围内。必须区分正常的非强迫性眨眼和自愿的强迫性眼睑运动。在正常的眨眼中，观察不到地球仪明显的向上旋转。强迫性眨眼或上眼睑运动的抑制导致贝尔氏运动。当上眼睑下降时，地球仪向后移动1-6 mm，这可能是由眨眼闭合阶段的眼睑压力引起的。
The eyelid motion dynamics of the human eyeblink were studied with a high speed camera system. Films were made from a hidden location through a one-way mirror. Normal, unforced blinks were recorded. The descent of the upper eyelid reached its maximum speed at about the time it crosses the visual axis, generally in the range of 17-20 cm/s, but occasionally reaching a speed of over 40 cm/s. The motion of the lower eyelid was mostly horizontal, in a nasally directed movement, with a total displacement in the range of 2-5 mm. A distinction must be made between normal, unforced blinks and voluntary, forced eyelid motion. In a normal blink, no appreciable upward rotation of the globe is observed. A forced blink or a restraint of motion of the upper eyelid results in Bell''s movement. The globe moves posteriorly up to 1-6 mm as the upper eyelid descends, probably caused by eyelid pressure during the closing phase of the blink.