from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An instrument for examining the interior structures of the eye, especially the retina, consisting essentially of a mirror that reflects light into the eye and a central hole through which the eye is examined.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. an instrument for examining the interior of the eye
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for viewing the interior of the eye, particularly the retina. Light is thrown into the eye by a mirror (usually concave) and the interior is then examined with or without the aid of a lens.
from The Century Dictionary and Cyclopedia
- To view the eye by means of the ophthalmoscope.
- n. An instrument for viewing the interior of the eye, especially for examining the retina.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. medical instrument for examining the retina of the eye
"We also want to raise awareness for families of young kids to tell their pediatricians to do the proper diagnosis, to use what they call the ophthalmoscope and to dilate the eyes.
Caught early enough -- and the ophthalmoscope is the method for pinning it down -- the condition can be treated with laser surgery.
The ophthalmoscope is a very useful instrument for determining the condition of the different structures of the eyes, when in the hands of persons who are trained in its use.
Optic neuritis is diagnosed by clinical presentation as well as visualization of the optic disc using an ophthalmoscope.
Helmholtz achieved a staggering number of scientific results, including the formulation of energy conservation, the vortex equations for fluid dynamics, the notion of free energy in thermodynamics, and the invention of the ophthalmoscope.
The ophthalmoscope allows the examining doctor to look inside the patient's eye at the lens, retina and optic nerve.
While the ophthalmoscope made von Helmholtz famous, he distinguished himself in a number of scientific disciplines involving sensory perception, so much so that the Encyclopaedia Britannica wrote: "His life from first to last was one of devotion to science, and he must be accounted, on intellectual grounds, as one of the foremost men of the 19th century."
Image: Hulton-Deutsch Collection / Corbis 1850: German physician Hermann von Helmholtz, who devoted much of his career to studying the eye and the physics of vision and perception, demonstrates his ophthalmoscope to the Berlin Physical Society.
Although von Helmholtz was not the first person to develop an ophthalmoscope, nor the first to examine the interior of the eye, his device was the first to be put to practical use.
I deflated the cuff, and then peered into her eyes with my ophthalmoscope.