title: Dark adaptation time in canine electroretinography using a contact lens electrode with a built-in light source.
abstract: The purpose of this study was to evaluate the dark adaptation time in canine electroretinography (ERG) using a contact lens electrode with a built-in LED. Twelve eyes of six normal laboratory beagle dogs were used and exposed to steady room light at 500 lux for 30 min for light adaption. ERG was recorded at different time points during dark adaptation in sedated and light-adapted beagles. The stimulus intensity was 0.0096 cd/m(2)/sec. The b-wave amplitude increased significantly until 25 min of dark adaptation, whereas no significant changes in amplitudes were observed after 30 min. Dark adaptation for more than 25 min would be necessary for accurate ERG in canine ERG using a contact lens electrode with a built-in LED.
authors.affiliation: Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan.
authors.forename: Seiya
authors.initials: S
authors.lastname: Maehara
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Itoh
authors.forename: Sho
authors.initials: S
authors.lastname: Hoshino
authors.forename: Miri
authors.initials: M
authors.lastname: Hayashi
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Ito
mesh_terms: D000818:Animals; D003261:Contact Lenses / Q000662:veterinary*; D003623:Dark Adaptation / Q000502:physiology*; D004285:Dogs / Q000502:physiology*; D004566:Electrodes / Q000662:veterinary; D004596:Electroretinography / Q000662:veterinary*; D008027:Light; D012160:Retina / Q000502:physiology*