Sub-micrometer axial resolution OCT for in-vivo imaging of the cellular structure of healthy and keratoconic human corneas

Corneal degenerative conditions such as keratoconus (KC) cause progressive damage to the anterior corneal tissue and eventually severely compromise visual acuity. The ability to visualize corneal tissue damage at cellular or sub-cellular level at different stages of development of KC and other corne...

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Published in:Biomedical optics express 2017-02, Vol.8 (2), p.800-812
Main Authors: Bizheva, Kostadinka, Tan, Bingyao, MacLelan, Benjamin, Kralj, Olivera, Hajialamdari, Mojtaba, Hileeto, Denise, Sorbara, Luigina
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cited_by cdi_FETCH-LOGICAL-c384t-41e2b71092a9e4e509d0f47ece21e9f181dfe45e905d6069bb91ad7f5a07269c3
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container_title Biomedical optics express
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creator Bizheva, Kostadinka
Tan, Bingyao
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Hileeto, Denise
Sorbara, Luigina
description Corneal degenerative conditions such as keratoconus (KC) cause progressive damage to the anterior corneal tissue and eventually severely compromise visual acuity. The ability to visualize corneal tissue damage at cellular or sub-cellular level at different stages of development of KC and other corneal diseases, can aid the early diagnostics as well as the development of more effective treatment approaches for various corneal pathologies, including keratoconus. Here, we present the optical design of an optical coherence tomography system that can achieve 0.95 µm axial resolution in biological tissue and provide test results for the system's spatial resolution and sensitivity. Corneal images acquired with this system from healthy and keratoconic human subjects reveal the cellular and sub-cellular structure of the corneal epithelium, as well as the normal and abnormal structure of the Bowman's membrane and the anterior corneal stroma.
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title Sub-micrometer axial resolution OCT for in-vivo imaging of the cellular structure of healthy and keratoconic human corneas
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