Normal values in clinical electrooculography. V. Variability within and between eyes.
Three EOG's (DC amplified 30-degree saccades, slightly modified Arden schedule) were recorded at weekly intervals from each of 16 normal human eyes (eight subjects). The light induced potential rise of the dark-adapted eye, the Arden ratio and the Gliem ratio entered into the analysis of intra- and inter-eye variation. The 95% confidence intervals for the mean parameter values of each eye were: +/- 59 muV (mean = 415 muV) for the light induced potential rise, +/- 22 (mean = 260) for the Arden ratio and +/- 10 (mean = 92) for the Gliem ratio. The intra-eye variability was compared to earlier studies of the day-to-day variation of the ERG by means of a dimensionless index; no substantial differences were found. Highly significant differences in the EOG parameter levels existed between the subjects, whereas the variation between right eye and left eye means in the individual subjects was ise respects. The primarily qualitative nature of the EOG in the present version is emphasized by the present results.
D000328:Adult; D000704:Analysis of Variance; D004585:Electrooculography; D005260:Female; D006801:Humans; D008297:Male; D012016:Reference Values