Measurement method of eyelid pressure distribution using thin film coating on contact lenses - 2nd report : Fabrication of spherical sucrose lenses and the abrasive test

Distribution measurement of eyelid pressure is an important technology for diagnosis and treatment on corneal disorders, dry eyes etc. In the previous report, we have demonstrated the abrasive test of plane sucrose film samples, and experimentally evaluated thickness reduction characteristics of sucrose films. Although it showed sufficient potential of sucrose films for the distribution measurement of eyelid pressure, it was limited only to plane surface. In this study, we fabricated spherical lenses using melted sucrose with molding dies, and performed its abrasive test using a newly designed abrasive tester. The thickness reduction of sucrose lenses was evaluated by an image comparison of the lenses before and after the test F.xperimental results proved the spherical sucrose films with the image comparison can be applied for the distribution measurement of eyelid pressure. © 2021 Japan Society for Precision Engineering. All rights reserved.