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Proceedings Paper

Analysis of water film thickness on contact lens by reflectometry technique
Author(s): Michael R. Wang; Hui Lu; Jianhua Wang; Meixiao Shen
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Paper Abstract

We report the use of optical reflectometry technique for evaluation of water film on contact lens. The water film can be measured through the spectral dependent reflectance evaluation, which is carried out by illuminating the contact lens with a white light and collecting the returning light with an optical fiber coupled to a spectrometer. Water film thinning process has been observed on different soft contact lenses and minimum measurable thickness is about 0.85 μm. The measurement is fast and accurate. The water film measurement can be valuable for contact lens design to improve its hydrophilic properties. The technique can be extended for the study of tear film dynamics in an eye.

Paper Details

Date Published: 4 February 2011
PDF: 7 pages
Proc. SPIE 7885, Ophthalmic Technologies XXI, 788503 (4 February 2011); doi: 10.1117/12.876333
Show Author Affiliations
Michael R. Wang, Univ. of Miami (United States)
Hui Lu, Univ. of Miami (United States)
Jianhua Wang, Bascom Palmer Eye Institute (United States)
Meixiao Shen, Bascom Palmer Eye Institute (United States)


Published in SPIE Proceedings Vol. 7885:
Ophthalmic Technologies XXI
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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