Abstract

In eye movement perimetry (EMP), the saccadic reaction time (SRT) to ‘seen’ visual stimuli are delayed in glaucoma. Evaluating SRT behaviour in hemi-field sectors could refine its clinical implication. The development phase included 60 controls retrospectively and for the test cohort in evaluation phase, another 30 healthy subjects and 30 glaucoma patients were recruited prospectively. The SRTs were used to calculate the normative limits within 5 predefined hemi-field sectors. Scores were assigned to probabilities for SRT at the level of 5%, 2.5% 1% and 0.5%. Per sector pair, a probability score limit (PSL) was calculated at each of the four levels and were compared with the scores obtained from the test cohort. The classification accuracy ‘normal versus abnormal’ was assessed for PSL in EMP and compared with glaucoma hemi-field test in standard automated perimetry. We found no statistically significant differences in SRTs between the mirror sectors in healthy subjects. The PSL at 2.5% had moderate classification accuracy with a specificity of 77% and sensitivity 70%. This could be suggestive of an SRT delay in the overall visual field in glaucoma.

Details

Title
Saccadic reaction time in mirror image sectors across horizontal meridian in eye movement perimetry
Author
Mazumdar Deepmala 1 ; Meethal Najiya S Kadavath 1 ; George, Ronnie 2 ; Pel Johan J M 3 

 Erasmus MC, Vestibular and Ocular Motor Research Group, Department of Neuroscience, Rotterdam, The Netherlands (GRID:grid.5645.2) (ISNI:000000040459992X); Medical and Vision Research Foundation, Chennai, India (GRID:grid.414795.a) (ISNI:0000 0004 1767 4984) 
 Medical and Vision Research Foundation, Chennai, India (GRID:grid.414795.a) (ISNI:0000 0004 1767 4984) 
 Erasmus MC, Vestibular and Ocular Motor Research Group, Department of Neuroscience, Rotterdam, The Netherlands (GRID:grid.5645.2) (ISNI:000000040459992X); Erasmus MC, Department of Neuroscience, Room EE 1453, Rotterdam, The Netherlands (GRID:grid.5645.2) (ISNI:000000040459992X) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2483416048
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.