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Proceedings Paper

Study on intra-ocular lens aberration measurement in-air
Author(s): Yuanyuan Wang; Jiaojie Chen; Haihua Fen; Chuan Hu; Yiyi Li
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Paper Abstract

In clinical ophthalmology, the wavefront aberration of human eyes is expressed by Zernike polynomial after cataract surgery and intraocular lens implantation, the human eyes aberration will change. The problem of objective evaluation of wavefront aberration introduced by the Intra-ocular (IOL) in-vivo remains unsolved. This paper introduced the measurement principal of IOL wavefront aberration with expression by Zernike polynominal in air. A Hartmann-Shack wavefront sensor system was constructed to measure the wavefront of IOL and to get the corresponding grid patterns. After a series of computer image processing steps, 7th order with 35 items Zernike coefficients was obtained. The IOL of 20.0D power was measured 5 times by this system to get the spherical aberration about 6.73±0.02μm, demonstrating the good repeatability of the system. Ten IOLs with the same 20.0D power but difference in surface curvature were chosen for measurement. The spherical aberration observed were in the range of 2.74μm-11.26μm. These results are valuable for the optical design of IOLs and the aberration analysis of human eyes post-operation.

Paper Details

Date Published: 12 October 2010
PDF: 8 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76564C (12 October 2010); doi: 10.1117/12.867692
Show Author Affiliations
Yuanyuan Wang, Wenzhou Medical College (China)
Jiaojie Chen, Wenzhou Medical College (China)
Haihua Fen, Wenzhou Medical College (China)
Chuan Hu, Wenzhou Medical College (China)
Yiyi Li, Wenzhou Medical College (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Jose M. Sasian; Libin Xiang; Sandy To, Editor(s)

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