ophthalmoscope

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Related to ophthalmoscopes: otoscopes

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 ?
Only three family physicians found the ophthalmoscope easy to use, but that was after only 4 weeks' experience, Dr.
Ophthalmic Diagnostic Instruments II-11 Ophthalmic Diagnostics Goes High Tech II-11 The Constituents II-11 Procedures for Measuring Eye Defects II-11 Perimeters II-11 Refractometer II-12 Slit Lamps II-12 Tonometers II-12 Fundus Cameras and Fundus Reflectometers II-13 Ocular Fundus Reflectometry II-13 Types of Ocular Fundus Reflectometry II-13 Lens Meters II-14 Ophthalmoscopes II-15 Ultrasound Equipment II-15 Corneal Topography Systems II-15 Use of Corneal Topography in Data Measurement and Presentation II-15 Method of Studying Topographic Displays II-15 Use of Topography in Refractive Surgery: II-16 B.
Table 24: World Recent Past, Current & Future Analysis for Ophthalmic Diagnostic Devices by Product Segment-Corneal Topography Systems, Refractors, Perimeters, Slit Lamps, Diagnostic Ultrasound Equipment, Lens Meters, Fundus Cameras, Diagnostic Imaging Systems, Ophthalmoscopes, and Tonometers Markets Independently Analyzed with Annual Sales Figures in Units for Years 2001 through 2010 (includes corresponding Graph/Chart) II-79
Table 25: World Long-term Projections for Ophthalmic Diagnostic Devices by Product Segment- Ophthalmoscopes, Lens Meters, Slit Lamps, Tonometers, Perimeters, Corneal Topography Systems, Refractors, Diagnostic Imaging Systems, Fundus Cameras, and Diagnostic Ultrasound Equipment Markets Independently Analyzed with Annual Sales Figures in Units for Years 2011 through 2015 (includes corresponding Graph/Chart) II-80
Table 26: World Historic Review for Ophthalmic Diagnostic Devices by Product Segment-Corneal Topography Systems, Refractors, Perimeters, Slit Lamps, Diagnostic Ultrasound Equipment, Lens Meters, Fundus Cameras, Diagnostic Imaging Systems, Ophthalmoscopes, and Tonometers Markets Independently Analyzed with Annual Sales Figures in Units for Years 1995 through 2000 (includes corresponding Graph/Chart) II-81
Table 27: World 10-Year Perspective for Ophthalmic Diagnostic Devices by Product Segment- Percentage Breakdown of Volume Sales for Product Segment-Corneal Topography Systems, Refractors, Perimeters, Slit Lamps, Diagnostic Ultrasound Equipment, Lens Meters, Fundus Cameras, Diagnostic Imaging Systems, Ophthalmoscopes, and Tonometers Markets for Years 2003, 2008 & 2012 (includes corresponding Graph/Chart) II-82 Ophthalmic Surgical Devices II-83
Table 47: World Recent Past, Current & Future Analysis for Ophthalmic Diagnostic Devices by Product Segment-Corneal Topography Systems, Refractors, Perimeters, Slit Lamps, Diagnostic Ultrasound Equipment, Lens Meters, Fundus Cameras, Diagnostic Imaging Systems, Ophthalmoscopes, and Tonometers Markets Independently Analyzed with Annual Sales Figures in US$ Million for Years 2001 through 2010 (includes corresponding Graph/Chart) II-99
Table 48: World Long-term Projections for Ophthalmic Diagnostic Devices by Product Segment- Corneal Topography Systems, Lens Meters, Refractors, Ophthalmoscopes, Slit Lamps, Fundus Cameras, Perimeters, Diagnostic Imaging Systems, Tonometers, and Diagnostic Ultrasound Equipment Markets Independently Analyzed with Annual Sales Figures in US$ Million for Years 2011 through 2015 (includes corresponding Graph/Chart) II-100
Table 49: World Historic Review for Ophthalmic Diagnostic Devices by Product Segment-Corneal Topography Systems, Refractors, Perimeters, Slit Lamps, Diagnostic Ultrasound Equipment, Lens Meters, Fundus Cameras, Diagnostic Imaging Systems, Ophthalmoscopes and Tonometers Markets Independently Analyzed with Annual Sales Figures in US$ Million for Years 1995 through 2000 (includes corresponding Graph/Chart) II-101
Table 50: World 10-Year Perspective for Ophthalmic Diagnostic Devices by Product Segment- Percentage Breakdown of Dollar Sales for Product Segment-Corneal Topography Systems, Refractors, Perimeters, Slit Lamps, Diagnostic Ultrasound Equipment, Lens Meters, Fundus Cameras, Diagnostic Imaging Systems, Ophthalmoscopes, and Tonometers Markets for Years 2003, 2008 & 2012 (includes corresponding Graph/Chart) II-102
Table 63: US Recent Past, Current & Future Analysis for Ophthalmic Instrumentation by Product Segment - Diagnostic Devices (Corneal Topography Systems, Refractors, Perimeters, Slit Lamps, Diagnostic Ultrasound Equipment, Lens Meters, Fundus Cameras, Diagnostic Imaging Systems, Ophthalmoscopes, and Tonometers) and Surgical Products Markets Independently Analyzed with Annual Sales Figures in Units for Years 2001 through 2010 (includes corresponding Graph/Chart) III-16
Medisave carries a full range of spares -- including everything from spare rim assemblies for a stethoscope to ear tips or bulbs for otoscopes and ophthalmoscopes.