title: The effects of fundus photography on the multifocal electroretinogram.
abstract: OBJECTIVE
  To determine the effect of flash fundus photography (FFP) on the multifocal electroretinogram (mfERG).
  
  
  METHODS
  Ten subjects underwent mfERG testing on three separate dates. Subjects received either mfERG without FFP, mfERG at 5 and 15 min after FFP, or mfERG at 30 and 45 min after FFP on each date. The FFP groups received 10 fundus photographs followed by mfERG testing, first of the right eye then of the left eye 10 min later. Data were averaged and analyzed in six concentric rings at each time point. Average amplitude and implicit times of the N1, P1, and N2 peaks for each concentric ring at each time point after FFP were compared to baseline.
  
  
  RESULTS
  Flash fundus photography did not lead to a significant change of amplitude or implicit times of N1, P1, or N2 at 5 min after light exposure.
  
  
  CONCLUSIONS
  These findings suggest that it is acceptable to perform mfERG testing without delay after performance of FFP.
authors.affiliation: Department of Ophthalmology, University of Minnesota Medical Center, MMC 493, 420 Delaware St. SE, Minneapolis, MN, 55455, USA.
authors.forename: Sandip
authors.initials: S
authors.lastname: Suresh
authors.affiliation: Department of Ophthalmology, University of Minnesota Medical Center, MMC 493, 420 Delaware St. SE, Minneapolis, MN, 55455, USA.
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Tienor
authors.affiliation: Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates.
authors.forename: Scott D
authors.initials: SD
authors.lastname: Smith
authors.affiliation: Department of Ophthalmology, University of Minnesota Medical Center, MMC 493, 420 Delaware St. SE, Minneapolis, MN, 55455, USA. mikelee@umn.edu.|Department of Neurology, University of Minnesota Medical Center, Minneapolis, MN, USA. mikelee@umn.edu.|Department of Neurosurgery, University of Minnesota Medical Center, Minneapolis, MN, USA. mikelee@umn.edu.
authors.forename: Michael S
authors.initials: MS
authors.lastname: Lee
mesh_terms: D000328:Adult; D018592:Cross-Over Studies; D004311:Double-Blind Method; D004596:Electroretinography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009184:Mydriatics / Q000008:administration & dosage; D010775:Photic Stimulation; D010781:Photography; D011446:Prospective Studies; D011680:Pupil / Q000187:drug effects; D012160:Retina / Q000502:physiology* / Q000528:radiation effects*; D014792:Visual Acuity / Q000502:physiology; D055815:Young Adult
chemical_list: D009184:Mydriatics
keywords: Electroretinography; Fundus photography; Multifocal electroretinogram; mfERG