Hayashi T T, Fatt I
Am J Optom Physiol Opt. 1980 Aug;57(8):485-507. doi: 10.1097/00006324-198008000-00003.
The forces retaining a contact lens on the eye between blinks are analyzed using quasi-static equilibrium equations. The main forces are: (1) the surface tension forces around the contact lens periphery pulling the lens toward the cornea, (2) the reaction pressure force underneath the lens countering the effects of the surface tension, and (3) the weight of the lens. The reaction pressure force on the posterior side of the contact lens arises as a consequence of lubrication phenomenon. The centered lens can never be in static equilibrium. However, since the time period associated with the inertia effect in a thin-film system is much longer than the time between consecutive blinks, a quasi-static analysis is applied.
使用准静态平衡方程分析眨眼间隙保持隐形眼镜在眼睛上的力。主要的力有：(1) 隐形眼镜周边的表面张力将镜片拉向角膜；(2) 镜片下方的反压力抵消表面张力的作用；(3) 镜片的重量。隐形眼镜后侧的反压力是润滑现象的结果。居中的镜片永远不会处于静态平衡。然而，由于薄膜系统中与惯性效应相关的时间段比连续眨眼之间的时间长得多，因此应用准静态分析。
