نتایج جستجو برای: multifocal electroretinogram

تعداد نتایج: 12627  

Journal: :Vision Research 2001
Donald C Hood Marcus A Bearse Erich E Sutter Suresh Viswanathan Laura J Frishman

To search for an optic nerve head component (ONHC) in the monkey's (Macaca mulatta) multifocal electroretinogram (mERG), mERGs from three animals were recorded with different electrode configurations. A component with a latency that varied with distance from the optic nerve head was easily identified by eye in recordings from the speculum of a Burian-Allen electrode referenced to a DTL on the u...

Journal: :Arquivos Brasileiros De Oftalmologia 2021

PURPOSE: To assess the effect of continuously covering sick eye affected with central serous chorioretinopathy for 48 h. METHODS: This retrospective, case-control study involved 32 patients categorized in treatment group composed 17 that received continuous h a medical gauze and observation 15 these who were followed up. None any other treatments or medications. The logarithm minimal angle reso...

Journal: :The British journal of ophthalmology 2011
Patrick H W Chu Yiu-Fai Ng Patrick W K Ting Jenny C Y Lung Wing-Cheung Ho Kwok-Fai So Chi-Ho To Henry H L Chan

PURPOSE This study investigated the retinal adaptive mechanism in inner retinal dysfunction using the slow double-stimulation multifocal electroretinogram (mfERG) paradigm. METHODS Slow double-stimulation mfERG responses were recorded from 15 eyes of 15 4-month-old Mongolian gerbils in control conditions and after suppression of inner retinal responses with injections of tetrodotoxin (TTX) an...

Journal: :Investigative ophthalmology & visual science 1999
J Felius W H Swanson

PURPOSE The relation between early changes in the photopic flicker electroretinogram (ERG) and photopic psychophysical changes in retinitis pigmentosa (RP) is poorly understood. Here, abnormalities in foveal and extrafoveal temporal contrast sensitivity functions (TCSFs) were studied in a group of carefully selected patients with RP who had relatively preserved macular function. The psychophysi...

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