In-vivo dual-beam optical coherence tomography

Fercher, Adolf Friedrich; Hitzenberger, Christoph K.; Drexler, Wolfgang; Kamp, G.; Sattmann, Harald; Schmetterer, Leopold; Strasser, I.; Unfried, C

doi:10.1117/12.167410

Cited by 9 publications

(2 citation statements)

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“…Two alternate approaches are being pursued to deal with the problem of scattered light. The first approach involves selecting the image‐bearing photons from the background of multiple‐scattered image‐blurring photons using clever experimental techniques 1–29 . The image‐bearing photons are then used to form a shadowgram of the object inside the scattering medium.…”

Section: Introductionmentioning

confidence: 99%

Advances in Optical Imaging of Biomedical Media^a

Alfano

Demos

Gayen

1997

Annals of the New York Academy of Sciences

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In this article, we have presented an overview of fundamental issues involved in mediphotonic imaging, and reviewed some of the emerging techniques for early-light transillumination imaging of body organs. The results on human breast tissues presented here, together with the data accumulated and advances made by researchers around the globe, not only demonstrate the feasibility of optical imaging as a clinical procedure but indicate a road map to reach that goal. The milestones include evaluation of relative merits of available approaches for a particular imaging application; selection of diagnostic wavelengths, as well as sources to generate and detectors to monitor light at those wavelengths; accumulation of data on optical, spectroscopic, and transport properties of tissues and organs; in vivo testing; prototype instrumentation development; clinical trials; governmental approval; cost analysis and marketing; and finally system improvement based on feedback from end users. A new era of optical clinical imaging is at the door.

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Section: Introductionmentioning

confidence: 99%

Advances in Optical Imaging of Biomedical Media^a

Alfano

Demos

Gayen

1997

Annals of the New York Academy of Sciences

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“…A special interferometric method, which uses light of low coherence length and the Doppler principle, was used to measure intraocular distances along the vision axis of the human eye in vivo. 21 A new approach using dual-beam coherent illumination for determining the central corneal radius was has also been described. 20 The special technique of optical coherence tomography is under development and can be a powerful diagnostic tool in ophthalmology.…”

Section: Introductionmentioning

confidence: 99%

Measuring ophthalmologic surfaces by means of moire´ deflectometry

Rottenkolber

Podbielska

1996

Opt. Eng

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A new technique for measuring ophthalmologic surfaces such as aspheric contact lenses and the human cornea is proposed in this paper. The method is based on the principle of moiré deflectometry. In moiré deflectometry, two fringe patterns (deflectograms) are generated, each providing a piece of information about the measured wavefront. Compared with interferometric techniques, interpretation of the fringe patterns obtained is more difficult. Therefore synthetic deflectograms for surfaces with known parameters are generated. Computer simulation of deflectograms in the case of aberrations introduced by an aspherical object is also performed. Experimental results for various curved surfaces, including contact lenses and the human cornea, are demonstrated. Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 05/15/2015 Terms of Use: http://spiedl.org/terms

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