Results 261 to 270 of about 441,395 (317)

Scanning Laser Ophthalmoscope

IEEE Transactions on Biomedical Engineering, 1981
An instrument is described which functions as a low light level ocular fundus camera and ophthalmoscope, and which is capable of making a wide range of quantitative measurements in the eye. Light levels for ophthalmoscopy (20 ?W/cm2 at the retina) are at least two orders of magnitude below those in current use. A focused laser bearn forms a flying spot,
R H, Webb, G W, Hughes
openaire   +2 more sources

Laser-scanning cytometry

The Lancet, 1999
72655
Rew, DA, Woltmann, G, Wardlaw, AJ
openaire   +3 more sources

Combining laser scans

ACM SIGGRAPH 2006 Sketches on - SIGGRAPH '06, 2006
Figure 1: Left, a patch of a single surface captured by a laser range scanner at about .4mm/sample. Center, we integrate many of these surfaces to create a single high-quality surface on a higher-resolution grid. Right, a photograph of the object. Notice the improved detail on the eye and the nostril, the feather texture on the face (invisible in the ...
Yong Joo Kil, Boris Mederos, Nina Amenta
openaire   +1 more source

The scanning laser ophthalmoscope

Physics in Medicine and Biology, 1997
The imaging of the fundus of the eye poses two major technical challenges. First, it is necessary for both the illuminating and reflected beams to pass through the same aperture, the iris. In some commonly used instruments this leads to the use of levels of illumination close to the maximum tolerable by a patient.
P F, Sharp, A, Manivannan
openaire   +2 more sources

Scanning laser polarimetry – a review

Clinical & Experimental Ophthalmology, 2009
AbstractGlaucoma is a leading cause of irreversible blindness worldwide. Retinal ganglion cells and their axons represent the selective target of the disease. When visual function is still intact on standard automated perimetry and optic disc appearance is suspicious, an early diagnosis may be supported by the identification of a retinal nerve fibre ...
DA POZZO S   +2 more
openaire   +3 more sources

Adaptive Laser Range Scanning

2007 International Workshop on Robotic and Sensors Environments, 2007
We present an approach to laser range scanning in which quality metrics are used to automatically reduce the number of measurements acquired from a scanner viewpoint. As part of this approach we present improved versions of the orientation, and reflectivity quality metrics, as well as introduce three quality metrics: spot size, re solvability, and ...
MacKinnon, D.   +3 more
openaire   +2 more sources

Scanning Laser Cytometry

Current Protocols in Cytometry, 2004
AbstractThere are many tasks to which flow cytometers are unsuited, e.g., measurement of attached cells, repeated measurements of a single cell over time, and localization of probes in or on cells. Devices such as confocal microscopes and microscope‐based imaging systems allow high‐resolution analysis and provide flexibility, but typically have low ...
openaire   +2 more sources

Coherence control by laser scanning

Applied Optics, 1980
Partially coherent illumination provided by scanning an object with a laser beam is studied theoretically and experimentally. Two scanning system schemes are considered to produce different forms of spatial coherence functions. It is demonstrated that effective spatial coherence can be controlled by changing the range and width of the scanning beam.
K, Itoh, Y, Ohtsuka
openaire   +2 more sources

Scanning Laser Ophthalmoscope Microperimetry

Seminars in Ophthalmology, 1998
In this article, the methodologies and clinical applications of microperimetry performed by scanning laser ophthalmoscope (SLO) are described. This technique provides functional results by direct visualization of the macular area. We present the most interesting data about clinical applications in ocular pathology.
M, Varano, C, Scassa
openaire   +2 more sources

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