The Clinical Electro-oculogram (EOG) is an electrophysiological test of function of the outer retina and retinal pigment epithelium (RPE) in which the change in the electrical potential between the cornea and the ocular fundus is recorded during successive periods of dark and light adaptation. This document sets out a Standard Method for performance of the test, and also gives detailed guidance on technical and practical issues, and on reporting test results. The main object of the Standard is to promote consistent quality of testing and reporting within and between centres. This 2006 Standard, from the International Society for Clinical Electrophysiology of Vision (ISCEV: www.iscev.org ), is a revision of the previous Standard published in 1993, and reviewed and re-issued in 1998.
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http://dx.doi.org/10.1007/s10633-006-9030-0 | DOI Listing |
Graefes Arch Clin Exp Ophthalmol
December 2024
Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Purpose: To perform association analyses between the measurements of photopic negative response (PhNR) evoked by two ISCEV protocols.
Methods: A total of 172 eyes from 72 post-operative pediatric cataract patients and 24 healthy children were enrolled. The amplitude and peak time of PhNR were analyzed in three eye groups, 1.
Doc Ophthalmol
December 2024
Diagnosys LLC, 55 Technology Dr #100, Lowell, MA, 01851, USA.
Purpose: Several studies have reported that glaucoma patients have abnormal photopic negative response (PhNR) results compared to reference control subjects. The International Society for Clinical Electrophysiology of Vision (ISCEV) released an extended protocol for PhNR (I-PhNR) in 2018. The purpose of this study was to compare the I-PhNR protocol to a similar protocol modified (M-PhNR) to enhance the performance of the method in detecting glaucomatous damage.
View Article and Find Full Text PDFDoc Ophthalmol
October 2024
Center for Ophthalmology, University Eye Hospital, University of Tuebingen, Elfriede-Aulhorn-Str.7, 72076, Tuebingen, Germany.
Objective: The purpose of this study was to evaluate the age-dependency of amplitudes and implicit times in the electroretinograms (ERGs) of healthy individuals and provide clinicians and researchers with a reference for a variety of stimulus paradigms.
Design And Methods: Full-field electroretinography was conducted on 73 healthy participants aged 14-73 using an extended ISCEV standard protocol that included an additional 9 Hz flicker stimulus for assessing rod function and special paradigms for isolated On-Off and S-cone responses. Correlation coefficients and best-fit regression models for each parameter's age-dependency were calculated.
Sci Rep
July 2024
Ophthalmic Department, Otto-Von-Guericke University Magdeburg, Magdeburg, Germany.
In order to determine the effect of nystagmus on objective visual acuity (VA) estimates, we compared subjective (VA) and objective (VEP, VA) VA estimates in participants with nystagmus. For this purpose, 20 participants with nystagmus (NY) caused by idiopathic infantile nystagmus, albinism, achiasma or acquired nystagmus were recruited in this study. Estimates of BCVA (best corrected visual acuity) were determined psychophysically (VA; FrACT, Freiburg visual acuity test) and electrophysiologically (VA; EP2000) according to ISCEV (International Society of Clinical Electrophysiology of Vision) guidelines.
View Article and Find Full Text PDFDoc Ophthalmol
August 2024
Center for Ophthalmology, University Eye Hospital, University of Tübingen, 72076, Tübingen, Germany.
Purpose: The aim of this exploratory study is to investigate the role of S-cones in oscillatory potentials (OPs) generation by individuals with blue-cone monochromacy (BCM), retaining S-cones, and achromatopsia (ACHM), lacking cone functions.
Methods: This retrospective study analyzed data from 39 ACHM patients, 20 BCM patients, and 26 controls. Central foveal thickness was obtained using spectral-domain optical coherence tomography, while amplitude and implicit time (IT) of a- and b-waves were extracted from the ISCEV Standard dark-adapted 3 cd.
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