title: Electrophysiological studies before and after argon-laser photocoagulation in diabetic retinopathy.
abstract: 50 eyes with diabetic retinopathy were studied before and after treatment with argon-laser coagulation. After treatment, decreases of the L/D ratios of the EOGs and of the amplitudes of all ERG components were found. The scotopic b waves were more involved than the photopic b waves. The peak times were hardly modified. The dark-adaptation curves were not modified. Interesting was the fact that in the pretreatment findings the EOGs were involved before the ERGs. The decreases of the L/D ratios started when avascular and ischemic zones were seen on fluorescein angiography.
mesh_terms: D000328:Adult; D001128:Argon; D003623:Dark Adaptation; D003930:Diabetic Retinopathy / Q000503:physiopathology* / Q000601:surgery; D004585:Electrooculography; D004596:Electroretinography; D005260:Female; D006801:Humans; D053685:Laser Therapy; D007834:Lasers; D008297:Male; D008875:Middle Aged; D012160:Retina / Q000503:physiopathology*; D013997:Time Factors
chemical_list: D001128:Argon