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Proceedings Paper

Improved sensitivity measurement of the human eye length in vivo with Fourier domain optical coherence tomography
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Paper Abstract

We present a system for intraocular distance measurement of the human eye in vivo with high sensitivity. The instrument is based on Fourier domain low coherence interferometry (FD-LCI). State-of-the-art FD-LCI systems are capable to image a depth range of only a few mm, because the depth range is determined by the spectral resolution of the spectrometer. To measure larger distances (e.g. human eye length) we implemented two separate reference arms with different arm lengths into the interferometer. Each reference arm length corresponds to a different depth position within the sample (e.g. cornea and retina). Therefore two different depth sections, each with a depth range of a few mm can be imaged simultaneously. With the new system axial distances could be measured with a precision of 8&mgr;m. We demonstrate the performance of the instrument by measuring the axial eye length of 9 patients with cataract and compare our results with those obtained using the IOL Master (Carl Zeiss Meditec Inc.).

Paper Details

Date Published: 25 February 2008
PDF: 8 pages
Proc. SPIE 6844, Ophthalmic Technologies XVIII, 68440L (25 February 2008); doi: 10.1117/12.765103
Show Author Affiliations
Branislav Grajciar, Medical Univ. of Vienna (Austria)
Slovak Univ. of Technology FEI (Slovak Republic)
Michael Pircher, Medical Univ. of Vienna (Austria)
Christoph K. Hitzenberger, Medical Univ. of Vienna (Austria)
Adolf F. Fercher, Medical Univ. of Vienna (Austria)

Published in SPIE Proceedings Vol. 6844:
Ophthalmic Technologies XVIII
Bruce E. Stuck; Fabrice Manns; Per G. Söderberg; Michael Belkin M.D.; Arthur Ho, Editor(s)

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