An indirect
It consists of a head-mounted lightsource, and a powerful lens (+20 Dioptres usually) held in the hand.
The patient is positioned so that the patient's eye, the lens and the observer's eye are in a straight line. The instrument is used to diagnose various retinal pathologies like retinal detachment etc, and also to treat them.
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indirect ophthalmoscope — an ophthalmoscope that produces an inverted, or reversed, direct image of 2 to 5 times magnification, depending on the dioptric power to the examining lens … Medical 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
indirect ophthalmoscopy — An exam of the inside of the back of the eye using a beam of light and a hand held lens. Indirect ophthalmoscopy gives a wider view inside the eye than an exam using an ophthalmoscope does … English dictionary of cancer terms
Офтальмоскоп (Ophthalmoscope) — прибор для исследования внутренней поверхности глаза (см. рис.). Существует два вида офтальмоскопов. В прямом офтальмоскопе (direct ophthalmoscopc) тонкий луч света направляется непосредственно в глаз; врач видит пятно в том месте глаза, куда… … Медицинские термины
ОФТАЛЬМОСКОП — (ophthalmoscope) прибор для исследования внутренней поверхности глаза (см. рис.). Существует два вида офтальмоскопов. В прямом офтальмоскопе (direct ophthalmoscopc) тонкий луч света направляется непосредственно в глаз; врач видит пятно в том… … Толковый словарь по медицине
Ophthalmoscopy — Examination of the interior of the eye, including the lens, retina and optic nerve, by indirect or direct ophthalmoscopy. Indirect ophthalmoscopy employs a head lamp device to shine a very bright light into the eye. This is generally done by an… … Medical dictionary
Ophthalmoscopy — Intervention Ophthalmoscopic exam: the medical provider would next move in and observe with the ophthalmoscope from a distance of one to several cm. MeSH … Wikipedia
Fundus camera — A fundus camera or retinal camera is a specialized low power microscope with an attached camera designed to photograph the interior surface of the eye, including the retina, optic disc, macula, and posterior pole (i.e. the fundus).Cassin, B. and… … Wikipedia
