Validity and Repeatability of Saccadic Response Times Across the Visual Field in Eye Movement Perimetry

Translational Vision Science & Technology
J J M PelJ Van Der Steen

Abstract

To assess the validity and repeatability of saccadic reaction times (SRT) across the visual field up to 30° using eye movement perimetry (EMP). Eighteen subjects (36 eyes) were shown a central stimulus on a flat monitor screen. Next, peripheral stimuli were shown using an overlap paradigm. Subjects were instructed to look at detected peripheral stimuli and then refixate the central stimulus again. In three repetitive measurement series, a total of 288 visual stimuli (3 series × 24 locations × 4 contrast levels) were presented. Levene's test for equality of variances was applied to test the effect of stimulus location and measurement series on SRT variance. A Wilcoxon signed ranks test was used to compare SRTs between measurement series. A total of 26 eyes were included in the study (72%). On average, 90.5% of the peripheral stimuli were labeled as 'seen' based on eye movement responses. Between the series, the mean SD of SRT differences was approximately 100 ms. Significantly faster SRTs were only found at contrast level 0.8 in series III compared with series II. In series I, SRT variance was independent in 75% of all locations. Across the three series, SRT variance was independent in 87.5% of all locations. The present study d...Continue Reading

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Citations

Jun 17, 2015·Journal of Ophthalmology·G ThepassJ van der Steen
May 1, 2016·Acta Ophthalmologica·Marlou J G KooikerJohannes van der Steen
Apr 5, 2019·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Najiya Sundus Kadavath MeethalRonnie George
Aug 5, 2020·The British Journal of Ophthalmology·Pete R JonesDavid P Crabb
Aug 4, 2020·Translational Vision Science & Technology·Soheil M DoustkouhiSteven C Dakin
Dec 29, 2017·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·N S Kadavath MeethalJ J M Pel
Feb 12, 2019·Translational Vision Science & Technology·Pete R JonesDavid P Crabb
Aug 8, 2019·Translational Vision Science & Technology·Deepmala MazumdarJohan J M Pel
Dec 1, 2019·European Journal of Paediatric Neurology : EJPN : Official Journal of the European Paediatric Neurology Society·Lisa NeumayrMartin Staudt

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