ABSTRACT This report discusses blink‐induced vertical motion of contact lenses as measured with a slit lamp. The motion seen this way represents the displacement of the lens from its position just before a blink to its position immediately after the blink. Motion amplitudes reported in the literature will be discussed in the context of a hypothesis which seeks to account for lens motion by taking into consideration the post‐lens tear film characteristics, the diameter of the lens, and the geometry of the anterior segment of the eye.
Knoll et al. (Sun,) studied this question.
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