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The Heidelberg Retinal Tomography is a diagnostic procedure used in ophthalmology. The Heidelberg Retina Tomograph (HRT) is an ophthalmological confocal point scanning laser ophthalmoscope [ 1 ] for examining the cornea and certain areas of the retina using different diagnostic modules (HRT retina, HRT cornea, HRT glaucoma).
Scanning laser ophthalmoscopy developed as a method to view a distinct layer of the living eye at the microscopic level. The use of confocal methods to diminish extra light by focusing detected light through a small pinhole made possible the imaging of individual layers of the retina with greater distinction than ever before. [4]
Examples include optical microscopy, spectroscopy, endoscopy, scanning laser ophthalmoscopy, laser Doppler imaging, and optical coherence tomography. Because light is an electromagnetic wave, similar phenomena occur in X-rays, microwaves, and radio waves. Optical imaging systems may be divided into diffusive [1] [2] and ballistic imaging [3 ...
Heidelberg retinal tomography (HRT), scanning laser polarimetry and optical coherence tomography are computerised techniques for imaging various structures of the eyes, including the optic disc. They quantify the nerve fiber layer of the disc and surrounding retina and statistically correlate the findings with a database of previously screened ...
Retinal scanning has been utilized by several government agencies including the FBI, CIA, and NASA, and has also been used in prisons. [9] Retinal scanning also has medical application. Communicable illnesses such as AIDS , syphilis , malaria , chicken pox and Lyme disease as well as hereditary diseases like leukemia , lymphoma , and sickle ...
Scanning laser ophthalmoscopy; Scanning laser polarimetry; Schiøtz tonometer; Schirmer's test; Seidel test; Snellen chart; Stokes lens; Swedish interactive thresholding algorithm; Swinging light test
William J. Hennessy Jr., a veteran sketch artist who gave Americans striking views from inside courtrooms during some of the nation’s most important legal dramas, died on Monday.
Laser scanning is the controlled deflection of laser beams, visible or invisible. [1] Scanned laser beams are used in some 3-D printers, in rapid prototyping, in machines for material processing, in laser engraving machines, in ophthalmological laser systems for the treatment of presbyopia, in confocal microscopy, in laser printers, in laser shows, in Laser TV, and in barcode scanners.