Dr. Rafat R. Ansari Profile

Dr. Rafat R. Ansari

NASA Senior Scientist -Retired

SPIE Involvement:

Author | Instructor | Science Fair Judge

Area of Expertise:

Ophthalmic Technologies , Remote Sensing , Biomedical Optics , Bioastronautics

Publications (45)

Proceedings Article | 26 April 2016 Presentation

Non-invasive detection of laser-induced retinal injury through the vitreous using dynamic light scattering (Conference Presentation)

Rafat Ansari, Melissa Naiman, Rachida Bouhenni, Jeffery Dunmire, Ying Liu, Qundeel Rafiq, Deepak Edward, David Gothard

Proceedings Volume 9693, 969317 (2016) https://doi.org/10.1117/12.2214980

KEYWORDS: Vitreous, Dynamic light scattering, Proteins, Laser scattering, Injuries, Eye, Retina, In vivo imaging, Biological research, Holmium

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SPIE Journal Paper | 17 March 2014 Open Access

Lasers for Medical Applications: Diagnostics, Therapy, and Surgery

Rafat Ansari

JBO, Vol. 19, Issue 03, 039901, (March 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.3.039901

KEYWORDS: Laser therapeutics, Laser applications, Medical laser equipment, Medicine, Laser vision correction, Diagnostics, Surgery, Laser tissue interaction, Biomedical optics, Neurology

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SPIE Journal Paper | 18 December 2012 Open Access

Biomedical Imaging: Principles and Applications

Rafat Ansari

JBO, Vol. 17, Issue 12, 129901, (December 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.12.129901

KEYWORDS: Biomedical optics, Magnetic resonance imaging, Mammography, Microscopy, Imaging spectroscopy, Imaging technologies, Medical research, Molecules, X-ray computed tomography, Positron emission tomography

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Proceedings Article | 3 March 2010 Paper

An attempt to understand flicker vertigo: changes in pupil size and choroidal blood flow under flickering conditions

Maria Gabriella Masi, Lorenzo Peretto, Luigi Rovati, Rafat Ansari

Proceedings Volume 7550, 75502G (2010) https://doi.org/10.1117/12.841722

KEYWORDS: Eye, Cameras, Blood circulation, Light emitting diodes, Infrared imaging, Control systems, Hemodynamics, RGB color model, Frame grabbers, Doppler effect

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Proceedings Article | 3 March 2010 Paper

Analysis of dynamic light scattering data with sparse Bayesian learning for the study of cataractogenesis

Su-Long Nyeo, Rafat Ansari

Proceedings Volume 7550, 75501R (2010) https://doi.org/10.1117/12.846644

KEYWORDS: Space based lasers, Lenses, Statistical analysis, Reconstruction algorithms, Dynamic light scattering, Analytical research, Computer simulations, Particles, Proteins, Fetus

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Proceedings Article | 3 March 2009 Paper

A non-invasive miniaturized-wireless laser-Doppler fiber optic sensor for understanding distal fingertip injuries in astronauts

Rafat Ansari, Jeffrey Jones, Luca Pollonini, Mikael Rodriguez, Roedolph Opperman, Jason Hochstein

Proceedings Volume 7186, 718609 (2009) https://doi.org/10.1117/12.809054

KEYWORDS: Blood, Blood circulation, Sensors, Injuries, Skin, Tissues, Doppler effect, Tissue optics, Fiber optics sensors, Laser tissue interaction

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Proceedings Article | 20 February 2009 Paper

Quantifying the effect of milli-molar glucose concentration on thickness of rabbit cornea with optical coherence tomography

Mohamad Ghosn, Michael Leba, Astha Vijayananda, Rafat Ansari, Kirill Larin

Proceedings Volume 7186, 71860B (2009) https://doi.org/10.1117/12.808304

KEYWORDS: Cornea, Glucose, Optical coherence tomography, Eye, Diffusion, Molecules, Water, Collagen, Blood, Semiconductor lasers

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Proceedings Article | 7 March 2006 Paper

A new approach to evaluating the effects of pharmacologic vitreolysis on vitreous diffusion coefficients using dynamic light scattering

Rafat Ansari, Kwang Suh, Jerry Sebag

Proceedings Volume 6138, 61380B (2006) https://doi.org/10.1117/12.650731

KEYWORDS: Vitreous, Diffusion, Magnesium, Dynamic light scattering, Molecules, Particles, Surgery, In vitro testing, Collagen, Control systems

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Proceedings Article | 13 July 2004 Paper

Simulation of optical path and volume-under-test calculation in an integrated dynamic light scattering and autofluorescence device

Luca Pollonini, Rafat Ansari, Luigi Rovati

Proceedings Volume 5314, (2004) https://doi.org/10.1117/12.554929

KEYWORDS: Eye, Optical components, Eye models, Geometrical optics, Optical simulations, Integrated optics, Atrial fibrillation, Dynamic light scattering, Tissues, Objectives

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SPIE Journal Paper | 1 January 2004 Open Access

New optical scheme for a polarimetric-based glucose sensor

Rafat Ansari, Stefan Boeckle, Luigi Rovati

JBO, Vol. 9, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1626664

KEYWORDS: Glucose, Polarization, Eye, Signal detection, Cornea, Sensors, Linear polarizers, Eye models, Light, Error analysis

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SPIE Journal Paper | 1 January 2004 Open Access

Ocular static and dynamic light scattering: a noninvasive diagnostic tool for eye research and clinical practice

Rafat Ansari

JBO, Vol. 9, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1626663

KEYWORDS: Particles, Eye, Light scattering, Cornea, Dynamic light scattering, Proteins, Vitreous, Laser sintering, Tissues, Opacity

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SPIE Journal Paper | 1 January 2004 Open Access

Guest Editorial: Ophthalmic Diagnostics

Rafat Ansari, J. Sebag

JBO, Vol. 9, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1623762

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Proceedings Article | 14 October 2003 Paper

Polarimetric glucose sensing using Brewster reflection applying a rotating retarder analyzer

Stefan Boeckle, Luigi Rovati, Rafat Ansari

Proceedings Volume 5143, (2003) https://doi.org/10.1117/12.502040

KEYWORDS: Glucose, Polarization, Signal detection, Calibration, Wave plates, Eye, Sensors, Polarimetry, Optical testing, Data acquisition

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Proceedings Article | 23 July 2003 Paper

Characterization of flowing particles with dynamic light scattering

Alfred Leung, Kwang Suh, Rafat Ansari

Proceedings Volume 4965, (2003) https://doi.org/10.1117/12.479419

KEYWORDS: Particles, Laser Doppler velocimetry, Velocity measurements, Dynamic light scattering, Fiber optics, Correlation function, Scattering, Latex, Fluid dynamics, Microfluidics

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Proceedings Article | 23 July 2003 Paper

Glucose sensing using the Brewster reflection: polarimetric ray-tracing based upon an anatomical eye model

Stefan Bockle, Luigi Rovati, Rafat Ansari

Proceedings Volume 4965, (2003) https://doi.org/10.1117/12.479403

KEYWORDS: Polarization, Eye, Glucose, Cornea, Eye models, Polarimetry, Reflection, Radio propagation, Geometrical optics, Refraction

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Proceedings Article | 14 July 2003 Paper

Pigment dispersion syndrome (PDS) assessment by dynamic light scattering

Luca Pollonini, Andrea Pasquali, Luigi Rovati, Rafat Ansari, Alessandra Franzoni, Luciano Quaranta

Proceedings Volume 4951, (2003) https://doi.org/10.1117/12.479464

KEYWORDS: Particles, Dynamic light scattering, Light scattering, Scattering, Cornea, Signal processing, Diagnostics, In vivo imaging, Mirrors, Stereolithography

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Proceedings Article | 14 July 2003 Paper

Measurement of choroidal blood flow in zero gravity

Rafat Ansari, Kwang Suh, Fabrice Moret, Russell Messer, Francis Manuel

Proceedings Volume 4951, (2003) https://doi.org/10.1117/12.479427

KEYWORDS: Data acquisition, Blood circulation, Doppler effect, Blood pressure, Environmental sensing, Laser tissue interaction, Safety, Tissue optics, Switches, Eye

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Proceedings Article | 14 July 2003 Paper

Early detection of cataract and response to pantethine therapy with noninvasive static and dynamic light scattering

Rafat Ansari, James King, Teri Seeberger, John Clark

Proceedings Volume 4951, (2003) https://doi.org/10.1117/12.479478

KEYWORDS: Proteins, Light scattering, Dynamic light scattering, Animal model studies, Crystals, Cornea, Lamps, Selenium, Optical testing, Scatter measurement

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Proceedings Article | 13 June 2002 Paper

Noninvasive evaluation of corneal abnormalities using static and dynamic light scattering

Rafat Ansari, Anup Misra, Alfred Leung, James King, Manuel Datiles

Proceedings Volume 4611, (2002) https://doi.org/10.1117/12.470598

KEYWORDS: Cornea, Eye, Surgery, Particles, LASIK, Light scattering, Dynamic light scattering, Scattering, Tissues, Collagen

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Proceedings Article | 13 June 2002 Paper

Dynamic light scattering and natural fluorescence measurements in healthy and pathological ocular tissues

Luca Pollonini, Luigi Rovati, Rafat Ansari

Proceedings Volume 4611, (2002) https://doi.org/10.1117/12.470597

KEYWORDS: Atrial fibrillation, Tissues, Dynamic light scattering, Pathology, Light scattering, Molecules, Cornea, Laser scattering, Luminescence, Eye

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Proceedings Article | 13 June 2002 Paper

Microcontroller-based front-end electronics for simultaneous measurements of dynamic light scattering and natural fluorescence

Luca Pollonini, Andrea Pasquali, Luigi Rovati, Rafat Ansari

Proceedings Volume 4611, (2002) https://doi.org/10.1117/12.470596

KEYWORDS: Atrial fibrillation, Microcontrollers, Laser scattering, Light scattering, Electronics, Signal processing, Dynamic light scattering, Eye, Head, Signal detection

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Proceedings Article | 23 May 2002 Paper

Polarimetric glucose sensing using the Brewster-reflection off the eye lens: theoretical analysis

Stefan Boeckle, Luigi Rovati, Rafat Ansari

Proceedings Volume 4624, (2002) https://doi.org/10.1117/12.468320

KEYWORDS: Glucose, Eye, Polarimetry, Cornea, Geometrical optics, Eye models, Refractive index, In vivo imaging, Blood, Polarization

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Proceedings Article | 24 October 2001 Paper

Development of a novel noninvasive sensor for determination of blood glucose concentration

Stefan Boeckle, Luigi Rovati, Rafat Ansari

Proceedings Volume 4434, (2001) https://doi.org/10.1117/12.446691

KEYWORDS: Glucose, Blood, Eye, Polarimetry, Polarization, Optical testing, Sensors, Biomedical optics, Linear polarizers, Photodetectors

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Proceedings Article | 24 October 2001 Paper

Dynamic light scattering and natural fluorescence measurements of the corneal tissue

Luca Pollonini, Luigi Rovati, Rafat Ansari

Proceedings Volume 4434, (2001) https://doi.org/10.1117/12.446692

KEYWORDS: Atrial fibrillation, Tissues, Dynamic light scattering, Cornea, Luminescence, Tissue optics, Eye, Diagnostics, Laser scattering, Light scattering

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Proceedings Article | 7 June 2001 Paper

Celestial and terrestrial tele-ophthalmology: a health monitoring helmet for astronaut/cosmonaut and general public use

Rafat Ansari, Luigi Rovati, Jerry Sebag

Proceedings Volume 4245, (2001) https://doi.org/10.1117/12.429269

KEYWORDS: Eye, Raman spectroscopy, Atrial fibrillation, Tissues, Glucose, Blood circulation, Blood, Vitreous, Radiation effects, Laser Doppler velocimetry

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Proceedings Article | 7 June 2001 Paper

Integrated instrument for dynamic light scattering and natural fluorescence measurements

Luigi Rovati, Luca Pollonini, Rafat Ansari

Proceedings Volume 4245, (2001) https://doi.org/10.1117/12.429271

KEYWORDS: Eye, Cornea, Atrial fibrillation, Dynamic light scattering, Particles, Luminescence, Tissues, Retina, Integrated optics, Tissue optics

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Proceedings Article | 7 June 2001 Paper

Noninvasive and remote detection of cataracts during space exploration with dynamic light scattering

Rafat Ansari, Frank Giblin, James King, Lisa Lambert

Proceedings Volume 4245, (2001) https://doi.org/10.1117/12.429264

KEYWORDS: X-rays, Proteins, Particles, Control systems, Dynamic light scattering, Eye, Ionizing radiation, Mars, Crystals, Microfluidics

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Proceedings Article | 21 May 2001 Paper

Dynamic light scattering in veterinary medicine: refinement of diagnostic criteria

Stephen Dubin, Stanley Zietz, Karl Gabriel, David Gabriel, Michael DellaVecchia, Rafat Ansari

Proceedings Volume 4244, (2001) https://doi.org/10.1117/12.427768

KEYWORDS: Particles, Diagnostics, Dynamic light scattering, Mahalanobis distance, Statistical analysis, Light scattering, Matrices, Opacity, Statistical modeling, Medicine

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Proceedings Article | 7 June 2000 Paper

New clinical instrument for the early detection of cataract using dynamic light scattering and corneal topography

Rafat Ansari, Manuel Datiles, James King

Proceedings Volume 3908, (2000) https://doi.org/10.1117/12.387509

KEYWORDS: Eye, Cornea, Scattering, Particles, Light scattering, Fiber optics, Proteins, Cones, Crystals, Data modeling

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Proceedings Article | 7 June 2000 Paper

Preliminary findings using dynamic light scattering to study vitreous effects of pharmacologic vitreolysis

Jerry Sebag, N. Kitaya, Rafat Ansari, H. Karagoezian, Akitoshi Yoshida

Proceedings Volume 3908, (2000) https://doi.org/10.1117/12.387525

KEYWORDS: Vitreous, Diffusion, Collagen, Dynamic light scattering, Retina, Molecules, Particles, Eye, Light scattering, Eye models

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Proceedings Article | 22 June 1999 Paper

Dynamic light scattering as an objective noninvasive method in veterinary ophthalmic diagnosis and research

Stephen Dubin, Rafat Ansari, Orien Tulp, Sheldon Steinberg, Seth Koch, Michael DellaVecchia, Mihaela Cozmi, Mary Victor

Proceedings Volume 3590, (1999) https://doi.org/10.1117/12.350982

KEYWORDS: Particles, Proteins, Dynamic light scattering, Opacity, Scattering, Eye, Crystals, Light scattering, Photons, Cornea

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Proceedings Article | 19 June 1998 Paper

Evaluation of incoherent light mixing effects on the quality of DLS data in a fiber optic setup for biological fluids and tissues

Rafat Ansari, Gary Gray, Jerri Ling, Jason Knight

Proceedings Volume 3252, (1998) https://doi.org/10.1117/12.311879

KEYWORDS: Particles, Photons, Fiber optics, Light scattering, Tissues, Scattering, Dispersion, Spatial coherence, Eye, Light sources

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Proceedings Article | 1 June 1998 Paper

Measuring lens opacity: combining quasi-elastic light scattering with Scheimpflug imaging system

Rafat Ansari, Manuel Datiles, James King, Doretha Leftwood

Proceedings Volume 3246, (1998) https://doi.org/10.1117/12.309433

KEYWORDS: Eye, Light scattering, Particles, Opacity, Imaging systems, Fiber optics, Scattering, Correlation function, Objectives, Laser scattering

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Proceedings Article | 24 April 1998 Paper

Dynamic light scattering particle-size measurements in turbid media

Rafat Ansari, Kwang Suh

Proceedings Volume 3251, (1998) https://doi.org/10.1117/12.306048

KEYWORDS: Particles, Light scattering, Scattering, Imaging systems, Diffusion, Laser scattering, Fiber optics, Dynamic light scattering, Sensors, Backscatter

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Proceedings Article | 22 December 1997 Paper

In-vivo cataractograms using a compact backscatter dynamic light scattering (DLS) probe

Rafat Ansari, Kwang Suh, Sparta Tumminia, Paul Russell, J. Zigler

Proceedings Volume 3192, (1997) https://doi.org/10.1117/12.297843

KEYWORDS: In vivo imaging, Backscatter, Dynamic light scattering, Particles, Proteins, Calorimetry, Fiber optics, Microfluidics, Eye, Visualization

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Proceedings Article | 17 May 1996 Paper

Three-dimensional scanning of eye (lens and vitreous) using a newly developed dynamic light scattering probe

Rafat Ansari, Kwang Suh

Proceedings Volume 2673, (1996) https://doi.org/10.1117/12.240065

KEYWORDS: Vitreous, Particles, 3D scanning, Eye, Scattering, Dynamic light scattering, Light scattering, Diffusion, Eye models, Polymers

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Proceedings Article | 10 May 1996 Paper

In-situ and in-vivo diagnostics of biological fluids

Rafat Ansari, Kwang Suh

Proceedings Volume 2678, (1996) https://doi.org/10.1117/12.239532

KEYWORDS: Proteins, Particles, Crystals, In vivo imaging, Fluid dynamics, Light scattering, Eye, Dynamic light scattering, Fiber optics, Scattering

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Proceedings Article | 10 January 1996 Paper

Ophthalmic diagnostics using a new dynamic light scattering fiber optic probe

Rafat Ansari, Kwang Suh, Michael DellaVecchia, Stephen Dubin

Proceedings Volume 2632, (1996) https://doi.org/10.1117/12.229574

KEYWORDS: Eye, Vitreous, Scattering, Light scattering, Laser scattering, Fiber optics, Particles, Semiconductor lasers, In vivo imaging, Diagnostics

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Proceedings Article | 8 January 1996 Paper

Sizing of colloidal particles and protein molecules in a hanging fluid drop

Rafat Ansari, Kwang Suh

Proceedings Volume 2629, (1996) https://doi.org/10.1117/12.229510

KEYWORDS: Proteins, Particles, Crystals, Fiber optics, Molecules, Semiconductor lasers, Laser scattering, Scattering, Avalanche photodetectors, GRIN lenses

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Proceedings Article | 22 May 1995 Paper

Fiber optic system for in-vivo sizing of proteins in animal eye lenses

Harbans Dhadwal, Rafat Ansari, Michael DellaVecchia, Stephen Dubin

Proceedings Volume 2393, (1995) https://doi.org/10.1117/12.209855

KEYWORDS: Eye, Light scattering, Fiber optics, Proteins, Scattering, In vivo imaging, Lenses, Laser scattering, Diffusion, Particles

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Proceedings Article | 30 September 1994 Paper

Integrated fiber optic system for dynamic light scattering measurements in microgravity

Rafat Ansari, Harbans Dhadwal, Kwang Suh

Proceedings Volume 2210, (1994) https://doi.org/10.1117/12.188082

KEYWORDS: Particles, Fiber optics, Polymers, Backscatter, Laser scattering, Fiber optics tests, Scattering, Dynamic light scattering, Light scattering, Optical testing

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Proceedings Article | 30 September 1994 Paper

Laser light scattering: from an advanced technology development program to experiments in a reduced gravity environment

William Meyer, Walther Tscharnuter, Andrew MacGregor, Henri Dautet, P. Deschamps, Jean-Francois Boucher, Jixiang Zhu, Padetha Tin, Richard Rogers, Rafat Ansari

Proceedings Volume 2210, (1994) https://doi.org/10.1117/12.188081

KEYWORDS: Light scattering, Semiconductor lasers, Laser scattering, Particles, Crystals, Dynamic light scattering, Sensors, Optical correlators, Avalanche photodetectors, Laser applications

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Proceedings Article | 21 July 1993 Paper

Dynamic light-scattering studies of BSA and lysozyme using a backscatter fiber optic system

Harbans Dhadwal, William Wilson, Rafat Ansari, William Meyer

Proceedings Volume 1884, (1993) https://doi.org/10.1117/12.148349

KEYWORDS: Backscatter, Light scattering, Fiber optics, Scattering, Proteins, Laser scattering, Optical fibers, Fiber optics tests, Optical testing, Scatter measurement

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SPIE Journal Paper | 1 February 1993

Coherent fiber optic sensor for early detection of cataractogenesis in a human eye lens

Harbans Dhadwal, Rafat Ansari, Michael DellaVecchia

OE, Vol. 32, Issue 02, (February 1993) https://doi.org/10.1117/12.10.1117/12.60741

KEYWORDS: Eye, Proteins, Light scattering, Fiber optics, Scattering, Backscatter, Diffusion, Fiber optics sensors, Molecules, Laser scattering

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Proceedings Article | 16 April 1992 Paper

Fiber optic sensor for ophthalmic refractive diagnostics

Rafat Ansari, Harbans Dhadwal, Melanie Campbell, Michael DellaVecchia

Proceedings Volume 1648, (1992) https://doi.org/10.1117/12.58290

KEYWORDS: Eye, Lenses, Crystals, Fiber optics, Particles, Light scattering, Fiber optics sensors, Sensors, Scattering, Diagnostics

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Showing 5 of 45 publications

Conference Committee Involvement (32)

Ophthalmic Technologies XXXIII

28 January 2023 | San Francisco, California, United States

Ophthalmic Technologies XXXII

22 January 2022 | San Francisco, California, United States

Ophthalmic Technologies XXXI

6 March 2021 | Online Only, California, United States

Ophthalmic Technologies XXX

1 February 2020 | San Francisco, California, United States

Ophthalmic Technologies XXIX

2 February 2019 | San Francisco, California, United States

Ophthalmic Technologies XXVIII

27 January 2018 | San Francisco, California, United States

Ophthalmic Technologies XXVII

28 January 2017 | San Francisco, California, United States

Ophthalmic Technologies XXVI

13 February 2016 | San Francisco, California, United States

Ophthalmic Technologies XXV

7 February 2015 | San Francisco, California, United States

Ophthalmic Technologies XXIV

1 February 2014 | San Francisco, California, United States

Optical Diagnostics and Sensing XIII: Toward Point-of-Care Diagnostics

6 February 2013 | San Francisco, California, United States

Ophthalmic Technologies XXIII

2 February 2013 | San Francisco, California, United States

Optical Diagnostics and Sensing XII: Toward Point-of-Care Diagnostics

25 January 2012 | San Francisco, California, United States

Ophthalmic Technologies XXII

21 January 2012 | San Francisco, California, United States

Optical Diagnostics and Sensing XI: Toward Point-of-Care Diagnostics

26 January 2011 | San Francisco, California, United States

Ophthalmic Technologies XXI

22 January 2011 | San Francisco, California, United States

Optical Diagnostics and Sensing X: Toward Point-of-Care Diagnostics

26 January 2010 | San Francisco, California, United States

Ophthalmic Technologies XX

23 January 2010 | San Francisco, California, United States

Optical Diagnostics and Sensing IX

27 January 2009 | San Jose, California, United States

Ophthalmic Technologies XIX

24 January 2009 | San Jose, California, United States

Optical Diagnostics and Sensing VIII

23 January 2008 | San Jose, California, United States

Ophthalmic Technologies XVIII

19 January 2008 | San Jose, California, United States

Optical Diagnostics and Sensing VII

23 January 2007 | San Jose, California, United States

Ophthalmic Technologies XVII

20 January 2007 | San Jose, California, United States

Optical Diagnostics and Sensing VI

25 January 2006 | San Jose, California, United States

Ophthalmic Technologies XVI

21 January 2006 | San Jose, California, United States

Optical Diagnostics and Sensing V

25 January 2005 | San Jose, CA, United States

Ophthalmic Technologies XV

22 January 2005 | San Jose, CA, United States

Optical Diagnostics and Sensing IV

27 January 2004 | San Jose, CA, United States

Ophthalmic Technologies XIV

24 January 2004 | San Jose, CA, United States

Optical Diagnostics and Sensing III

28 January 2003 | San Jose, CA, United States

Ophthalmic Technologies XIII

25 January 2003 | San Jose, CA, United States

Showing 5 of 32 Conference Committees

Course Instructor

SC028: Disease Diagnostics Using Ophthalmic Light Scattering

In this course, new non-invasive technologies are discussed for the earliest possible detection of ocular (cataracts, environmental toxicity, uveitis, diabetic retinopathy, age-related macular degeneration) and other diseases (diabetes, cholesterol, and possibly Alzheimer's). Optical technologies (slit-lamp bio-microscopy, Scheimpflug imaging, and fundus photography) can be used for the evaluation of structure and physiology in health, aging, and disease. The discussion on optical techniques includes dynamic light scattering, fluorometry, polarimetry, laser-Doppler flowmetry, and Raman scattering. Hands-on activities are also planned. These include "looking into your own body through your own eyes," performing a dynamic light scattering experiment, demonstration of a natural fluorescence camera, and corneal topography used in refractive surgery.

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