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Retinal nerve fiber layer retardation measurements using a polarization-sensitive fundus camera
- Source :
- Journal of biomedical optics. 16(7)
- Publication Year :
- 2011
-
Abstract
- To measure the retardation distribution of the optic retinal nerve fiber layer (RNFL) from a single image, we have developed a new polarization analysis system that is able to detect the Stokes vector using a fundus camera. The polarization analysis system is constructed with a CCD area image sensor, a linear polarizing plate, a microphase plate array, and a circularly polarized light illumination unit. In this system, the Stokes vector expressing the whole state of polarization is detected, and the influence of the background scattering in the retina and of the retardation caused by the cornea are numerically eliminated. The measurement method is based on the hypothesis that the retardation process of the eye optics can be quantified by a numerical equation that consists of a retardation matrix of all the polarization components. We show the method and the measurement results for normal eyes. Our results indicate that the present method may provide a useful means for the evaluation of retardation distribution of the RNFL.
- Subjects :
- Adult
Materials science
genetic structures
Optical Phenomena
Biomedical Engineering
Nerve fiber layer
Diagnostic Techniques, Ophthalmological
Retina
Biomaterials
symbols.namesake
Young Adult
Optics
medicine
Stokes parameters
Humans
Image sensor
Circular polarization
Birefringence
business.industry
Scattering
Ophthalmoscopes
Optical Devices
Polarization (waves)
eye diseases
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
medicine.anatomical_structure
symbols
Optoelectronics
Female
sense organs
business
Subjects
Details
- ISSN :
- 15602281
- Volume :
- 16
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- Journal of biomedical optics
- Accession number :
- edsair.doi.dedup.....a7abc6c7b08898f11db76109c69a4284