Document Detail

Macular oscillatory potentials in humans. Macular OPs.
MedLine Citation:
PMID:  2276312     Owner:  NLM     Status:  MEDLINE    
Studies of the focal macular electroretinogram (ERG) have been made with special reference to oscillatory potentials (OPs) by using a fundus monitoring system in humans. Human macular OPs consist of 3 to 4 wavelets (mean peak interval, approximately 6.5 msec). The distribution of OPs in relation to those in a- and b-waves was studied. The amplitudes of a-waves, b-waves, and OPs of the upper macula were significantly larger than those of the lower macula. The distribution of OPs is relatively sparse in the fovea, becoming more dense than the a- and b-waves from the fovea toward the parafovea, and differing even more toward the perifovea. There was no statistical difference of amplitude in a- and b-waves between nasal and temporal macula. The amplitude of OPs in the temporal macula, however, was significantly larger than in the nasal macula. In some macular diseases, such as diabetic maculopathy, cystoid macular edema, or the convalescent stage of central serous chorioretinopathy, macular OPs were selectively reduced, leaving the a- and b-waves intact. Macular OPs can provide a new aspect of macular function and can be a sensitive indicator to assess that function in macular diseases.
Y Miyake
Publication Detail:
Type:  Case Reports; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Documenta ophthalmologica. Advances in ophthalmology     Volume:  75     ISSN:  0012-4486     ISO Abbreviation:  Doc Ophthalmol     Publication Date:  1990 Sep 
Date Detail:
Created Date:  1991-03-04     Completed Date:  1991-03-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0370667     Medline TA:  Doc Ophthalmol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  111-24     Citation Subset:  IM    
Department of Ophthalmology, Nagoya University School of Medicine, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Chorioretinitis / physiopathology
Diabetic Retinopathy / physiopathology
Fluorescein Angiography
Fundus Oculi
Macula Lutea / physiology*,  physiopathology
Macular Edema / physiopathology
Retina / physiology*,  physiopathology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Steady-state pattern electroretinogram following long term unilateral administration of timolol to o...
Next Document:  The effect of 2-amino-4-phosphonobutyric acid on the oscillatory potentials of the electroretinogram...