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TitleImaging of aphakic intraocular lens with a slit-scanning tomography system
Author(s)Oliveira, Cristina
Almeida, José B.
Franco, Sandra
KeywordsSlit-scarning tomography system
Anterior eyes segment imaging
Aphakic intraocular lens
Slit-scanning tomography system
anterior eye segment imaging
Issue date2011
PublisherSociety of Photo-optical Instrumentation Engineers
JournalProceedings of SPIE
Abstract(s)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 non- invasive 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.
TypeConference paper
AccessRestricted access (UMinho)
Appears in Collections:CDF - OCV - Comunicações/Communications (with refereeing)

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