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Open AccessJournal ArticleDOI

Optical coherence tomography

TLDR
OCT as discussed by the authors uses low-coherence interferometry to produce a two-dimensional image of optical scattering from internal tissue microstructures in a way analogous to ultrasonic pulse-echo imaging.
Abstract
A technique called optical coherence tomography (OCT) has been developed for noninvasive cross-sectional imaging in biological systems. OCT uses low-coherence interferometry to produce a two-dimensional image of optical scattering from internal tissue microstructures in a way that is analogous to ultrasonic pulse-echo imaging. OCT has longitudinal and lateral spatial resolutions of a few micrometers and can detect reflected signals as small as approximately 10(-10) of the incident optical power. Tomographic imaging is demonstrated in vitro in the peripapillary area of the retina and in the coronary artery, two clinically relevant examples that are representative of transparent and turbid media, respectively.

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Journal ArticleDOI

Combined scanning optical coherence and two-photon-excited fluorescence microscopy.

TL;DR: Simultaneous imaging of cell nuclei with OCM and TPE is demonstrated in live drosophila embryos and both modes provide rapid en-face imaging with submicrometer resolution.
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Submicrometer precision biometry of the anterior segment of the human eye.

TL;DR: In this article, a modified, more sensitive scanning version of this technique was used to assess the central and peripheral corneal thickness, the anterior chamber depth, and the lens thickness of 20 healthy, emmetropic to moderately myopic eyes.
Journal ArticleDOI

Molecular Genetics of Human Retinal Disease

TL;DR: An overview of the basic and clinical biology of the retina is presented, recent progress in understanding the molecular mechanisms of inherited retinal diseases is summarized, and the role that genetics will play in the next phase of research in this area is assessed.
Journal ArticleDOI

Superpenetration optical microscopy by iterative multiphoton adaptive compensation technique

TL;DR: It is shown that high quality three-dimensional imaging can be realized at depths beyond the reach of conventional multiphoton microscopy and adaptive optics methods, albeit over restricted distances for a given correction.
Journal ArticleDOI

Optical Doppler tomography

TL;DR: Optical Doppler tomography (ODT) is an imaging modality that takes advantage of the short coherence length of a broadband light sources to perform micrometer-scale, cross-sectional imaging of tissue structure and blood flow dynamics simultaneously as discussed by the authors.
References
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Journal ArticleDOI

Computerized transverse axial scanning (tomography): Part I. Description of system. 1973.

TL;DR: A technique in which X-ray transmission readings are taken through the head at a multitude of angles: from these data, absorption values of the material contained within the head are calculated on a computer and presented as a series of pictures of slices of the cranium.
Journal ArticleDOI

Clinically detectable nerve fiber atrophy precedes the onset of glaucomatous field loss.

TL;DR: Nerve fiber layer defects expanded with time, often by the development and coalescence of adjacent areas of damage, and field defects closely corresponded, but nerve fiber layer loss was generally more widespread.
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Retinal ganglion cell atrophy correlated with automated perimetry in human eyes with glaucoma.

TL;DR: Estimates suggest that visual field sensitivity in automated testing begins to decline soon after the initial loss of ganglion cells in human eyes with glaucoma, and that this decline is most pronounced in areas that had 0-dB sensitivity in the field test.
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