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Measuring Reaction Rates

Measuring Reaction Rates

Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical field in...

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Related Experiment Video

Updated: Jun 24, 2026

Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies

Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies

Published on: October 22, 2014

Snapshot polarimeter fundus camera.

Edward DeHoog¹, Haitao Luo, Kazuhiko Oka

¹Department of Biomedical Engineering, University of Arizona, 1657 East Helen Street, Tucson, Arizona 85721, USA. dehooge@u.arizona.edu

|March 24, 2009

Summary

This summary is machine-generated.

This study integrates a snapshot imaging polarimeter into a fundus camera for advanced retinal imaging. The technology reconstructs Stokes vector images, revealing polarization properties in healthy and diseased retinas.

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Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases

Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases

Published on: March 11, 2016

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Last Updated: Jun 24, 2026

Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies

Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies

Published on: October 22, 2014

Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases

Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases

Published on: March 11, 2016

Area of Science:

Ophthalmology
Biomedical Optics
Medical Imaging

Background:

Retinal imaging is crucial for diagnosing eye diseases.
Current fundus cameras lack polarization information.
Polarization properties of the retina can offer diagnostic insights.

Purpose of the Study:

To develop and evaluate a fundus camera integrated with a snapshot imaging polarimeter.
To reconstruct Stokes vector images of the retina.
To analyze and compare retinal polarization properties in healthy and pathological conditions.

Main Methods:

Integration of a Savart plate-based snapshot imaging polarimeter into a fundus camera.
Acquisition of retinal images using the integrated system.
Processing of acquired images to reconstruct Stokes vector images.
Analysis of polarization data from normal and diseased retinas.

Main Results:

Successful integration of the polarimeter with the fundus camera.
Reconstruction of Stokes vector images demonstrating retinal polarization.
Identification of differences in polarization properties between healthy and pathological retinas.

Conclusions:

The integrated system enables snapshot polarimetric retinal imaging.
Stokes vector imaging provides novel insights into retinal polarization.
This technique holds potential for improved diagnosis of retinal diseases.