Results 171 to 180 of about 15,974 (222)
Acta Ophthalmologica, 2016 PurposeTo determine a relationship between the retinal vessel saturation alterations and the residual retinal function measured by means of full-field electroretinography (full-field ERG), electrooculogram (EOG) and multifocal electroretinography (mfERG)
Margarita G Todorova +2 more
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Acta Ophthalmologica, 1972
Flicker ERGs from normal human eyes are recorded using an averaging technique. After 300 msec the curve is in a stationary phase with strict periodicity. It is constructed by algebraic summation of individual flash responses with “head‐to‐tail” overlapping in higher frequencies. At a flash frequency of 25 cps.
N I, Bachen, M, Davanger
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Flicker ERGs from normal human eyes are recorded using an averaging technique. After 300 msec the curve is in a stationary phase with strict periodicity. It is constructed by algebraic summation of individual flash responses with “head‐to‐tail” overlapping in higher frequencies. At a flash frequency of 25 cps.
N I, Bachen, M, Davanger
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The electroretinogram (ERG) is used to measure electrical activity of various cell types in several layers of the retina, including rods, cones, inner retinal cells, and ganglion, in response to a light stimulus. ERG therefore provides objective information about visual system function and can provide diagnostic information for inherited and acquired ...
Julie, Shabto +3 more
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Julie, Shabto +3 more
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Agents and Actions, 1988
Basic mechanisms of the rat ERG were reinvestigated with contemporary methods of recording and photic stimulation via an optic fiber system connected with a contact lens. Flash stimulation and background illuminance were performed with photometrically defined light stimuli.
U, Schaeppi +4 more
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Basic mechanisms of the rat ERG were reinvestigated with contemporary methods of recording and photic stimulation via an optic fiber system connected with a contact lens. Flash stimulation and background illuminance were performed with photometrically defined light stimuli.
U, Schaeppi +4 more
openaire +2 more sources
2018
The electroretinogram (ERG) is a mass electrical response from the retina, evoked by a brief flash of light. ERG recording is done using an active electrode (a contact lens in contact with bulbar conjunctiva) and a reference electrode (at the outer canthus); the active electrode can also be a gold foil electrode or HK-loop electrode.
Stephen H, Tsang, Tarun, Sharma
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The electroretinogram (ERG) is a mass electrical response from the retina, evoked by a brief flash of light. ERG recording is done using an active electrode (a contact lens in contact with bulbar conjunctiva) and a reference electrode (at the outer canthus); the active electrode can also be a gold foil electrode or HK-loop electrode.
Stephen H, Tsang, Tarun, Sharma
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Electrode Equipment for Electroretinography
Biomedical Engineering, 2011Electrode equipment and its use in electroretinography (ERG) are discussed. Relative ERG error for corneal electrodes was 54%. Commercially available ERG electrodes can be used in medicine. The results obtained in this work provide a basis for normative documents for corneal electrodes in clinics.
I N, Spiridonov +2 more
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Acta Ophthalmologica, 2008
Abstract Purpose To illustrate the value of electroretinography in clinical practice. Methods A case presentation format will be used to illustrate how pattern electroretinography, full‐field flash electroretinography and multifocal electroretinography can be used in clinical practice.
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Abstract Purpose To illustrate the value of electroretinography in clinical practice. Methods A case presentation format will be used to illustrate how pattern electroretinography, full‐field flash electroretinography and multifocal electroretinography can be used in clinical practice.
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A Ganzfeld Stimulator For Electroretinography
Archives of Ophthalmology, 1976The design of a ganzfeld stimulator for electroretinography affects both clinical results and ease of operation. Several advantageous design differences from a recently described ganzfeld stimulator are (1) close proximity of the flash electrode to the surface of the sphere to increase the intensity and uniformity of the stimulus; (2) provision for ...
R D, Gunkel, D R, Bergsma, P, Gouras
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An international standard for electroretinography
Documenta Ophthalmologica, 1989An international standard procedure for electroretinography (ERG) has finally been established. It represents a minimum protocol to record five basic signals (rod response, scotopic maximal response, oscillatory potentials, single-flash cone response, 30-Hz flicker response).
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CLINICAL FLICKER ELECTRORETINOGRAPHY
Optometry and Vision Science, 1968ABSTRACT The history of the ERG (Electroretinogram) is traced through its first recordings to present times. The origins of the ERG are discussed, leading to the potential application of this technique to clinical optometry.
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