ophthalmoscope

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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.
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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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

ophthalmoscope

an instrument for examining the interior of the eye
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
We speculate that, in our patients who had normal choroidal thickness and did not demonstrate any pathological fundoscopy findings, despite significant ICA stenosis, the ophthalmic artery blood flow was sufficiently preserved.
The combination of hypertension, hypertensive changes on fundoscopy, laboratory evidence of microangiopathic haemolytic anaemia, and a renal biopsy consistent with thrombotic microangiopathy suggested that the unifying diagnosis in this case was malignant hypertension.
[13] The disease is diagnosed presumptively by means of fundoscopy, unlike systemic CMV disease, which requires confirmation by biopsy.
A dilated fundoscopy exam should be undertaken, starting with the time of diagnosis and annually thereafter in order to assess for achromic patches and retinal hamartomas.
Prior to fundoscopy recording, the dog's pupils were dilated with short-acting mydriatic 1% Tropicamide, 30 minutes prior to examination and after proper focusing of the camera, image of posterior segment was taken using ophthalmoscopic fundus imaging camera in a dark room.
Hearing was assessed by using otoacoustic emission testing, and retinae were examined by using handheld fundoscopy. We asked mothers about rash during pregnancy, but no data were collected on the timing of the rash, other clinical symptoms, or environmental exposures.
Fundoscopy was done, and two patches of hyperpigmentation in the right retina were seen, with normal left retina.
Fundoscopy was performed and showed the changes in image below.
The new clinic has an expanse of 3200 square feet and has advanced facilities which include Podia Scan, fundoscopy & Hormonal & Dexa Lab.
Patients with medically treated systemic hypertension, without findings of hypertensive retinopathy in dilated fundoscopy, were considered eligible to be included in the study.
It involves assessment of visual acuity (including the use of a pinhole to overcome refractive error) and a retinal examination (fundoscopy) through a dilated pupil.

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