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Proceedings Paper

Imaging of aphakic intraocular lens with a slit-scanning tomography system
Author(s): Cristina M. Oliveira; J. B. Almeida; S. Franco
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Paper Abstract

Nowadays, cataract extraction with IOL implantation aims not only to restore the crystalline lens' transparency, but also to improve patients' retinal image quality. The refractive outcome and visual quality in pseudophakic eyes is mainly determined by the combination of corneal and internal optics resulting from the implanted IOLs. The optical function of the IOLs depends on its position in the eye. The IOL distance to the corneal apex determines the optical power needed for optical correction. In this paper it is described the usage of a slit-scanning imaging system to determine IOL positioning. Through the projection of the light from a slit onto the eye, this tomography system allows to acquire multiple sections of the anterior eye segment, at different meridians. The developed system's software corrects geometric and optical distortion of the images and provides 3-dimentional models of the eye's structures from the 2-dimensional sections. With this noninvasive technique, cross-sectional images of an eye with an aphakic IOL were obtained in order to reconstruct its 3- dimensional model of the lens and assess its position in the anterior segment camera.

Paper Details

Date Published: 26 July 2011
PDF: 7 pages
Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 800135 (26 July 2011); doi: 10.1117/12.892082
Show Author Affiliations
Cristina M. Oliveira, Univ. of Minho (Portugal)
J. B. Almeida, Univ. of Minho (Portugal)
S. Franco, Univ. of Minho (Portugal)


Published in SPIE Proceedings Vol. 8001:
International Conference on Applications of Optics and Photonics
Manuel Filipe Costa, Editor(s)

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