ophthalmoscope

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Related to scanning laser ophthalmoscope: Optical coherence tomography

ophthalmoscope

(ŏfthăl`məskōp'), instrument used for examining the inner structure of the eyeeye,
organ of vision and light perception. In humans the eye is of the camera type, with an iris diaphragm and variable focusing, or accommodation. Other types of eye are the simple eye, found in many invertebrates, and the compound eye, found in insects and many other
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. The device was invented by the German physiologist H. L. F. von Helmholtz in 1851. His model consisted of three plates of glass pressed together and mounted on a handle at a 45° angle. A light was placed beside the subject whose eyes were to be examined. Some light passed through the plates, but some was reflected back into the eye. The form of the instrument now in general use consists of a concave mirror and a battery-powered light source within a tubular handle. Sighting is through a single or binocular eyepiece. The ophthalmoscope is equipped with a rotating disc of lenses to permit observation of the eye at varying depths and magnifications. Examination of the eye may be enhanced by administering drugs to dilate the pupil.

ophthalmoscope

[äf′thal·mə‚skōp]
(optics)
An instrument, consisting essentially of a concave mirror with a hole in it and fitted with lenses of different powers, for examining the interior of the eye through the pupil.

ophthalmoscope

an instrument for examining the interior of the eye
References in periodicals archive ?
Burns, "The use of forward scatter to improve retinal vascular imaging with an adaptive optics scanning laser ophthalmoscope," Biomedical Optics Express, vol.
Gaze-contingent display for retinal function testing by scanning laser ophthalmoscope. Journal of the Optical Society of America A-Optics Image Science and Vision, 24, 1402-1410.
Patient selection for macular translocation surgery using the scanning laser ophthalmoscope. Ophthalmology, 109, 1737-1744.
Key words: eccentric viewing, fixation, fixation PRL, preferred retinal locus, reading, reading rehabilitation, retinal function mapping, scanning laser ophthalmoscope, text scanning, text-scanning PRL
Key words: low vision, macular scotoma, preferred retinal locus, reading, rehabilitation, scanning laser ophthalmoscope, text navigation, trained retinal locus, vision rehabilitation, visual impairment.
The confocal scanning laser ophthalmoscope (cSLO) opens up a new dimension in fundus imaging.
The en face OCT images are presented next to other methods for comparison as appropriate: visual fields plots, fluorescein angiography, microscopy, familiar scanning laser ophthalmoscope (SLO) and digital fundus camera images, as well as cross-sectional OCT images.
A scanning laser ophthalmoscope (SLO) macular perimetry study involving 1,339 eyes of 825 patients with low vision showed that 90.9% of the eyes had a dense scotoma somewhere within the area of the central 20 degrees (Fletcher & Schuchard, 1997).
Among the variety of low-tech and high-tech methods for assessing central fields, the scanning laser ophthalmoscope (SLO) is the gold standard.

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