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Proceedings Paper

Parameters measurement of rigid gas permeable contact lens based on optical coherence tomography
Author(s): Dexi Zhu; Meixiao Shen; Yiyu Li
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Paper Abstract

Spectral domain optical coherence tomography (OCT) was developed in order to measure the geometric parameters of rigid gas permeable (RGP) contact lens. With custom designed OCT system, an ultra-high axial resolution of 3.3 μm in lens was achieved. The OCT image was corrected to eliminate the optical distortion and actual surfaces of lens were shown in contour map. Central thickness, lens diameter, base curve and front surface curvature at optical zone were calculated from the contour map. The results match well with the real values measured by conventional instruments. Our research indicates that OCT can be used to test the RGP lens in a simple and exact way.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84171D (15 October 2012); doi: 10.1117/12.975631
Show Author Affiliations
Dexi Zhu, Wenzhou Medical College (China)
Meixiao Shen, Wenzhou Medical College (China)
Yiyu Li, Wenzhou Medical College (China)


Published in SPIE Proceedings Vol. 8417:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Libin Xiang; Sandy To, Editor(s)

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