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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 5, Iss. 5 — May. 1, 2014
  • pp: 1419–1427

Spatial characterization of corneal biomechanical properties with optical coherence elastography after UV cross-linking

Michael D. Twa, Jiasong Li, Srilatha Vantipalli, Manmohan Singh, Salavat Aglyamov, Stanislav Emelianov, and Kirill V. Larin  »View Author Affiliations


Biomedical Optics Express, Vol. 5, Issue 5, pp. 1419-1427 (2014)
http://dx.doi.org/10.1364/BOE.5.001419


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Abstract

Corneal collagen cross-linking (CXL) is a clinical treatment for keratoconus that structurally reinforces degenerating ocular tissue, thereby limiting disease progression. Clinical outcomes would benefit from noninvasive methods to assess tissue material properties in affected individuals. Regional variations in tissue properties were quantified before and after CXL in rabbit eyes using optical coherence elastography (OCE) imaging. Low-amplitude (<1µm) elastic waves were generated using micro air-pulse stimulation and the resulting wave amplitude and speed were measured using phase-stabilized swept-source OCE. OCE imaging following CXL treatment demonstrates increased corneal stiffness through faster elastic wave propagation speeds and lower wave amplitudes.

© 2014 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6935) Medical optics and biotechnology : Tissue characterization

ToC Category:
Optical Coherence Tomography

History
Original Manuscript: January 17, 2014
Revised Manuscript: March 28, 2014
Manuscript Accepted: March 31, 2014
Published: April 4, 2014

Citation
Michael D. Twa, Jiasong Li, Srilatha Vantipalli, Manmohan Singh, Salavat Aglyamov, Stanislav Emelianov, and Kirill V. Larin, "Spatial characterization of corneal biomechanical properties with optical coherence elastography after UV cross-linking," Biomed. Opt. Express 5, 1419-1427 (2014)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-5-5-1419


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