[Normal values of retinal response densities in multifocal electroretinogram].
Multifocal electroretinograms (ERG) were recorded from 21 normal eyes to investigate the spatial distribution and inter-individual variation of local cone responses. To compensate for the effect of refractive lenses, test distances were adjusted to obtain a constant magnification on the retina. Significant nasal-temporal asymmetry was observed near the fovea with higher response densities in the temporal retina along the horizontal meridian. No significant supero-inferior asymmetry was observed along the vertical meridian. The average coefficient variation (standard deviation/average) of retinal response density for all areas was 0.35. In the clinical application of the multifocal ERG these results must be taken into consideration.
Kondo
M
M
Department of Ophthalmology, Nagoya University School of Medicine, Aichi-ken, Japan.
Miyake
Y
Y
Horiguchi
M
M
Suzuki
S
S
Ito
Y
Y
Tanikawa
A
A
D000328:Adult; D004596:Electroretinography / Q000379:methods*; D006801:Humans; D008433:Mathematics; D008875:Middle Aged; D012016:Reference Values; D012160:Retina / Q000502:physiology*