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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 4, Iss. 3 — Mar. 1, 2013
  • pp: 387–396

Full OCT anterior segment biometry: an application in cataract surgery

Sergio Ortiz, Pablo Pérez-Merino, Sonia Durán, Miriam Velasco-Ocana, Judith Birkenfeld, Alberto de Castro, Ignacio Jiménez-Alfaro, and Susana Marcos  »View Author Affiliations


Biomedical Optics Express, Vol. 4, Issue 3, pp. 387-396 (2013)
http://dx.doi.org/10.1364/BOE.4.000387


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Abstract

In vivo three-dimensional (3-D) anterior segment biometry before and after cataract surgery was analyzed by using custom high-resolution high-speed anterior segment spectral domain Optical Coherence Tomography (OCT). The system was provided with custom algorithms for denoising, segmentation, full distortion correction (fan and optical) and merging of the anterior segment volumes (cornea, iris, and crystalline lens or IOL), to provide fully quantitative data of the anterior segment of the eye. The method was tested on an in vitro artificial eye with known surfaces geometry at different orientations and demonstrated on an aging cataract patient in vivo. Biometric parameters CCT, ACD/ILP, CLT/ILT Tilt and decentration are retrieved with a very high degree of accuracy. IOL was placed 400 μm behind the natural crystalline lens, The IOL was aligned with a similar orientation of the natural lens (2.47 deg superiorly), but slightly lower amounts (0.77 deg superiorly). The IOL was decentered superiorly (0.39 mm) and nasally (0.26 mm).

© 2013 OSA

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(330.7327) Vision, color, and visual optics : Visual optics, ophthalmic instrumentation

ToC Category:
Ophthalmology Applications

History
Original Manuscript: October 19, 2012
Revised Manuscript: December 26, 2012
Manuscript Accepted: January 3, 2013
Published: January 31, 2013

Citation
Sergio Ortiz, Pablo Pérez-Merino, Sonia Durán, Miriam Velasco-Ocana, Judith Birkenfeld, Alberto de Castro, Ignacio Jiménez-Alfaro, and Susana Marcos, "Full OCT anterior segment biometry: an application in cataract surgery," Biomed. Opt. Express 4, 387-396 (2013)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-4-3-387


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