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A lubrication theory model of tear exchange under a soft contact lens
American Journal of Optometry and Physiological Optics
|March 1, 1976
Abstract:
Tear exchange due to squeezing of a soft contact lens onto the cornea by the lid is calculated from lubrication theory. The theory predicts that for a normal blink and the usual tear film thickness (8 to 10 microns) there will be 10 to 20% tear exchange at each blink.