Observational studyJapanese journal of ophthalmology2025
Modulation of the peak velocities and gains of abduction and adduction saccades according to head position.
Observational study in Japanese journal of ophthalmology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed.
- Ocular Translation Due to Gravitational Acceleration.Investigative ophthalmology & visual science · 2025Article
- Functional Anatomy of Ocular Counter-Rolling in Superior Oblique Palsy.Investigative ophthalmology & visual science · 2025Article
Corrections and comments
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Authors and funding
10 authors.
Funding
Abstract
purposeTo assess the effects of modifying head position and of static ocular counter-rolling (OCR) on abduction and adduction in saccadic eye movements using a head-mounted video-oculographic device. STUDY
designA clinical observational study.
methodsThe peak velocities and amplitude gains of visually guided 12° saccades were binocularly measured in 21 healthy volunteers with their heads in the upright vertical (0°) and horizontal (± 90°, bilateral side-lying) postures, and in 6 participants with their head positions bilaterally tilted by 30°. The rotation angles of eyeballs generated via OCR in the bilateral 30° and 90° head positions were evaluated in five participants.
resultsPeak velocities and gains were significantly higher with the head in the 0° position compared to ± 90°. The decreases in peak velocities and gains at ± 90° were not affected by the apogeotropic or geotropic directions. Faster peak velocities and greater gains on abduction, rather than adduction, were observed under each test condition. The tendencies toward faster peak velocity and greater gain in the 0° head position rather than bilaterally tilted at 30° were preserved. The absolute rotation angles at ± 90° were larger than those at 30°.
conclusionsHead position affected the peak velocities and gains of both abduction and adduction saccades. The findings suggest that modified force vectors exerted by different eye muscles recruited during OCR play a role. Our research provides valuable insights for assessing eye movements across various head positions.
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