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 ?
In children, although it is common to demonstrate ophthalmoscopic findings such as isolated retinal microaneurysms or small unilateral hemorrhages (all of which are signs of nonproliferative diabetic retinopathy (NPDR)), it is extremely rare to find preproliferative retinopathy, proliferative retinopathy, or macular edema, regardless of the degree of metabolic control or the time of evolution of diabetes [4], with a clear tendency in our days to the decrease in the detection of retinopathy [4, 9, 10].
If not observed initially, returning to the ONH at the end of the ophthalmoscopic examination and a further period of studying the peripapillary area often reveals SVP.
As early diagnosis is important in order to handle the treatable complications of WS, routine ophthalmoscopic and urological evaluation is recommended in all patients with non-autoimmune, insulin-deficient DM at the time of diagnosis.
McLeod, "Ophthalmoscopic signs of obstructed axoplasmic transport after ocular vascular occlusions," British Journal of Ophthalmology, vol.
(21) In a report of 40 infants with microcephaly and presumed CZS from Pernambuco, Brazil, Ventura et al (22) described ophthalmoscopic alterations in 55% (n = 22) of the infants.
Ophthalmoscopic examination using slit lamp and indirect lens along with intraocular pressure (IOP) measurement in pre and post operative subsequent follow up was done.
Once diabetes was confirmed at BHU by the Medical Officer after obtaining venous blood samples, individuals were referred for detailed ophthalmoscopic examination as well as to BHU physician for diabetes management.
Triamcinolone was found to be as safe as the prednisolone in terms of adverse effects, changes in visual acuity, IOP, and biomicroscopic and ophthalmoscopic variables.9
The canine ocular fundus showed enormous variations in normal ophthalmoscopic appearance.
Patients were examined including visual acuity, pupillary reactions and slit lamp bimicroscopy and ophthalmoscopic examination of both anterior and posterior segments.
However, the investigators noted, the findings suggest the possibility "that even oligosymptomatic or asymptomatic pregnant patients presumably infected [with Zika virus] may have microcephalic newborns with ophthalmoscopic lesions" and those newborns should be routinely evaluated for ocular symptoms.
Ophthalmoscopic examination of both the eyes revealed bilateral panuveitis.