Differences in eye movement range based on age and gaze direction.
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ABSTRACT: Purpose
To determine the range of eye movement in normal human subjects and to investigate the effect of age and gaze direction on eye movement.Patients and methods
A prospective observational study. We enrolled 261 healthy subjects, 5-91 years of age. Photographs were obtained in the cardinal gaze positions and processed using Photoshop. The processed images were analyzed using the Image J program to measure the angle of eye movement. The angle of eye movement was quantified using a modified limbus test. We measured the angle of eye movement in adduction, abduction, elevation, and depression.Results
The ranges of eye movement were 44.9?±?7.2° in adduction, 44.2?±?6.8° in adduction, 27.9?±?7.6° in elevation, and 47.1?±?8.0° in depression. The ranges of eye movement in the younger group were higher than that in the older group in adduction, abduction, and elevation (P?ConclusionsThe angle of upward gaze most rapidly decreased with age than the angle of other gaze. Unlike the age-related decline of range in horizontal and upward gazes, only downward gaze was not impaired by increasing age. Differences in eye movement range based on gaze direction and their associated aging mechanisms should be considered when assessing eye movements.
SUBMITTER: Lee WJ
PROVIDER: S-EPMC6707237 | biostudies-literature | 2019 Jul
REPOSITORIES: biostudies-literature
Publications
Differences in eye movement range based on age and gaze direction.
Lee Won June WJ Kim Ji Hong JH Shin Yong Un YU Hwang Sunjin S Lim Han Woong HW
Eye (London, England) 20190305 7
<h4>Purpose</h4>To determine the range of eye movement in normal human subjects and to investigate the effect of age and gaze direction on eye movement.<h4>Patients and methods</h4>A prospective observational study. We enrolled 261 healthy subjects, 5-91 years of age. Photographs were obtained in the cardinal gaze positions and processed using Photoshop. The processed images were analyzed using the Image J program to measure the angle of eye movement. The angle of eye movement was quantified usi ...[more]
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