title: Further studies of contact lens motion during blinking.
abstract: Contact lens motion is felt to be of increasing importance in connection with debris elimination, particularly in extended wear lenses. Thus an improved analysis is made of a simple model for investigating the initial motion of a hard contact lens over the eye during blinking. It is shown that the assumption of constant tear film thickness is a reasonable one. This greatly simplifies the analysis. Various vertical force vs. time variations are considered and lens velocity/time graphs and maximum lens displacement calculated. These are in good agreement with the results of experiment.
mesh_terms: D001767:Blinking; D003261:Contact Lenses; D006801:Humans; D008962:Models, Theoretical; D009038:Motion