scanning laser polarimetry


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polarimetry, scanning laser (SLP) 

An instrument using polarized laser light (780nm) to determine the thickness of the retinal nerve fibre layer (RNFL) in the peripapillary area. It utilizes the birefringent properties of the RNFL, which produces a change in polarization (called retardation) of the light reflected by the RNFL. The degree of retardation is assumed to be proportional to the thickness of the RNFL. The instrument includes a means of neutralizing the birefringence of the anterior segment of the eye. A comparison of the retardation values of the RNFL is made with an age-matched normative database. The instrument is used to detect RNFL defects and progressive changes over time in glaucomatous eyes. See glaucoma detection.
References in periodicals archive ?
Scanning laser polarimetry (SLP), confocal scanning laser ophthalmoscopy (CSLO) and optical coherence tomography (OCT) make use of the different properties of light and the varied characteristics of retinal tissue to provide real-time, non-invasive and high-resolution images.
They also include extensive articles on the basic principles and interpretation of imaging modalities such as flourescein angiography, indocyanine green angiography, optical coherence tomography, optical coherence tomographic ophthalmology, ultrasound, scanning laser tomography, scanning laser polarimetry, the retinal thickness analyzer, adaptive optics ophthalmoscopy, and imaging of ocular blood flow.

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