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Glaucoma Study Builds on OCT

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A new technique expands on existing optical coherence tomography (OCT) methods to measure blood flow in the retina and explore how that relates to the development of glaucoma, one of the leading causes of blindness in industrialized countries.

OCT is an important tool in diagnosing problems in the retina. Its downfall, however, is that it lacks the ability to provide more specific information about retinal function. 


A new technique is allowing enhanced study of glaucoma. Courtesy of the Austrian Science Fund.


“We are testing the hypothesis that the blood flow in the retina is reduced in glaucoma,” said Leopold Schmetterer, a professor at the Medical University of Vienna. “At the same time, we will also evaluate the technology we developed — in particular its suitability for the long-term analysis of retinal blood flow in individual patients.”

The new method, called Fourier domain optical Doppler tomography (FDODT), which will involve further development of OCT, records cross-section images of the retina as a way to quantify blood flow and study its influence on glaucoma.

The technique is now part of a comparative study looking at blood flow in the retinas of glaucoma patients as opposed to those with healthy retinas. The study is also looking at how retinal vessels can regulate blood flow on their own.

“We are analyzing whether the self-regulation of the blood flow in the optic disc is defective in glaucoma,” Schmetterer said.

The work is being funded by the Austrian Science Fund clinical research program. For more information, visit www.fwf.ac.at.
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Published: May 2014
Glossary
optical coherence tomography
Optical coherence tomography (OCT) is a non-invasive imaging technique used in medical and scientific fields to capture high-resolution, cross-sectional images of biological tissues. It provides detailed, real-time, and three-dimensional visualization of tissue structures at the micrometer scale. OCT is particularly valuable in ophthalmology, cardiology, dermatology, and various other medical specialties. Here are the key features and components of optical coherence tomography: Principle of...
retina
1. The photosensitive membrane on the inside of the human eye. 2. A scanning mechanism in optical character generation.
AustriaAustrian Science FundBasic ScienceBiophotonicsBioScanblood flowEuropeglaucomaImagingMedical University of ViennaMUWOCToptical coherence tomographyOpticsResearch & TechnologyretinaTest & MeasurementLeopold SchmettererCenter of Medical Physics and Biomedical EngineeringFourier Domain Optical Doppler TomographyFDODTFWF

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