ophthalmoscope

ophthalmoscope
—ophthalmoscopic /of thal'meuh skop"ik, op-/, ophthalmoscopical, adj.
/of thal"meuh skohp', op-/, n.
an instrument for viewing the interior of the eye or examining the retina.
[1855-60; OPHTHALMO- + -SCOPE]

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      instrument for inspecting the interior of the eye, invented in 1850 by the German physiologist Hermann von Helmholtz (Helmholtz, Hermann von). The ophthalmoscope became a model for later forms of endoscopy. The device consists of a strong light that can be directed into the eye by a small mirror or prism. The light reflects off the retina and back through a small hole in the ophthalmoscope, through which the examiner sees a nonstereoscopic magnified image of the structures at the back of the eye, including the optic disk, retina, retinal blood vessels, macula, and choroid. The ophthalmoscope is particularly useful as a screening tool for various ocular diseases, such as diabetic retinopathy.

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Universalium. 2010.

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  • Ophthalmoscope — Oph*thal mo*scope, n. [From Gr. ofqalmo s the eye + scope.] (Physiol.) 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… …   The Collaborative International Dictionary of English

  • ophthalmoscope — (n.) 1857 in English; coined 1852 by German physician and physicist Hermann Ludwig Ferdinand von Helmholtz (1821–1894) from OPHTHALMO (Cf. ophthalmo ) + SCOPE (Cf. scope) …   Etymology dictionary

  • ophthalmoscope — [äf thal′mə skōp΄] n. [ OPHTHALMO + SCOPE] an instrument used to examine the interior of the eye: it consists of a perforated mirror arranged to reflect light from a small bulb into the eye ophthalmoscopic [äf thal′məskäp′ik] adj. ophthalmoscopy… …   English World dictionary

  • Ophthalmoscope — The ophthalmoscope (or funduscope) is an instrument used to examine the eye. Its use is crucial in determining the health of the retina and the vitreous humor. In patients with headaches, the finding of swollen optic discs, or papilledema, on… …   Wikipedia

  • ophthalmoscope — A device for studying the interior of the eyeball through the pupil. SYN: funduscope. [ophthalmo + G. skopeo, to examine] binocular o. an o. that provides a stereoscopic view of the fundus. demonstration o. an o. by which the fundus may be seen… …   Medical dictionary

  • ophthalmoscope — n. an instrument for examining the interior of the eye. There are two types. The direct ophthalmoscope enables a fine beam of light to be directed into the eye and at the same time allows the examiner to see the spot where the beam falls inside… …   The new mediacal dictionary

  • ophthalmoscope — noun Etymology: International Scientific Vocabulary Date: circa 1857 an instrument for use in viewing the interior of the eye and especially the retina • ophthalmoscopic adjective • ophthalmoscopy noun …   New Collegiate Dictionary

  • ophthalmoscope — noun an instrument for examining the interior of the eye …   Wiktionary

  • ophthalmoscope — (o ftal mo sko p ) s. m. Instrument qui sert à examiner l intérieur de l oeil. ÉTYMOLOGIE    Termes grecs signifiant oeil et examiner …   Dictionnaire de la Langue Française d'Émile Littré

  • ophthalmoscope — instrument for viewing the interior of the eye Scientific Instruments …   Phrontistery dictionary

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