Abstract
Distribution measurement of eyelid pressure is an important technology for diagnosis and treatment on corneal disorders, dry eyes etc. The measurement methods are limited because of the eyeball surface curvature, as well as the eyelid pressure itself is fairly small ranging from 10 to 30 mmHg. So far, MEMS fabricated contact lenses and strip pressure sensors have been proposed, however, distribution measurement are impossible except an average or a local pressure. In this study, we propose a new method for the pressure and abrasive distribution measurement, in which, a color film coated contact lens works as a sensing device for the film thickness decrease due to blinking. In the first report, we experimentally evaluated thickness reduction characteristics of sucrose films, using a newly developed friction tester. Experimental results show its sufficient potential as a sensing material for eyelid pressure measurement.
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