Do standard optometric measures predict binocular coordination during reading?
Authors
Author (Corporation)
Publication date
21.01.2021
Typ of student thesis
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Collections
Type
01A - Journal article
Editors
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Parent work
Journal of Eye Movement Research
Special issue
DOI of the original publication
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Series
Series number
Volume
13
Issue / Number
6
Pages / Duration
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Publisher / Publishing institution
Bern Open Publishing
Place of publication / Event location
Bern
Edition
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Abstract
In reading, binocular eye movements are required for optimal visual processing and thus, in case of asthenopia or reading problems, standard orthoptic and optometric routines check individual binocular vision by a variety of tests. The present study therefore examines the predictive value of such standard measures of heterophoria, accommodative and vergence facility, AC/A-ratio, NPC and symptoms for binocular coordination parameters during reading. Binocular eye movements were recorded (EyeLink II) for 65 volunteers during a typical reading task and linear regression analyses related all parameters of binocular coordination to all above-mentioned optometric measures: while saccade disconjugacy was weakly predicted by vergence facility (15% explained variance), vergence facility, AC/A and symptoms scores predicted vergence drift (31%). Heterophoria, vergence facility and NPC explained 31% of fixation disparity and first fixation duration showed minor relations to symptoms (18%). In sum, we found only weak to moderate relationships, with expected, selective associations: dynamic parameter related to optometric tests addressing vergence dynamics, whereas the static parameter (fixation disparity) related mainly to heterophoria. Most surprisingly, symptoms were only loosely related to vergence drift and fixation duration, reflecting associations to a dynamic aspect of binocular eye movements in reading and potentially non-specific, overall but slight reading deficiency. Thus, the efficiency of optometric tests to predict binocular coordination during reading was low – questioning a simple, straightforward extrapolation of such test results to an overlearned, complex task.
Keywords
eye movement, eye tracking, reading, individual differences, binocular coordination, hetereophoria, saccade disconjugacy, vergence drift, fixation disparity
Subject (DDC)
610 - Medizin und Gesundheit
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ISBN
ISSN
1995-8692
Language
English
Created during FHNW affiliation
Yes
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Gold
Citation
JOSS, Joëlle und Stephanie JAINTA, 2021. Do standard optometric measures predict binocular coordination during reading? Journal of Eye Movement Research. 21 Januar 2021. Bd. 13, Nr. 6. DOI 10.16910/jemr.13.6.6. Verfügbar unter: https://doi.org/10.26041/fhnw-5097