title: Electrophysiologic changes in chronic pars planitis.
abstract: We studied 13 patients, six males and seven females, ranging in age from 14 to 53 years, with chronic pars planitis and a form of secondary retinal degeneration. All had experienced visual blurring but none had significant pain. Nine of the 13 had some disturbance in night vision. Visual acuity had decreased in three patients (in one because of cataract, in one because of cystoid macular degeneration, and for unknown reasons in the third), increased in two patients (because of improvement in cystoid macular edema), and remained stable in eight. There were electrophysiologic abnormalities, consisting of delayed B-wave implicit time, abnormal response to 30-Hz flicker, and reduced B-wave oscillations, in almost every patient. Our finding suggested that pars planitis is a vitreoretinal disorder rather than an inflammatory disease of the uveal tract.
mesh_terms: D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D004594:Electrophysiology; D004596:Electroretinography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012162:Retinal Degeneration / Q000503:physiopathology*; D014605:Uveitis / Q000503:physiopathology*