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Related Experiment Videos

Association between oculomotor function testing parameters and Parkinson's disease.

Lei Zhang1, Hong Yao2, Xuelin Liang1

  • 1Department of Neurology, Jinshan District Central Hospital affiliated to Shanghai University of Medicine & Health Sciences, Shanghai 201599, China.

Clinical Neurology and Neurosurgery
|January 28, 2026
PubMed
Summary
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Video-oculography (VOG) reveals significant oculomotor abnormalities in Parkinson's disease (PD) patients. A combined index of square-wave jerks, pursuit gain, and saccade latency enhances PD screening accuracy.

Area of Science:

  • Ophthalmology and Neurology
  • Neuroscience
  • Biomedical Engineering

Background:

  • Parkinson's disease (PD) presents with motor and non-motor symptoms, including oculomotor dysfunction.
  • Oculomotor abnormalities are a recognized feature in PD patients.
  • Understanding these dysfunctions aids in diagnosis and management.

Purpose of the Study:

  • To evaluate oculomotor function in PD patients using video-oculography (VOG).
  • To identify associations between specific physiologic parameters and PD.
  • To assess the diagnostic potential of VOG in PD detection.

Main Methods:

  • Enrolled 45 PD patients and 45 healthy controls.
  • Utilized video-oculography (VOG) to quantify eye movement parameters (velocity, latency, gain, accuracy).
Keywords:
Parkinson’s diseaseSaccadeSmooth pursuitSquare-wave jerksVestibulo-oculomotor functionVideo-oculography

Related Experiment Videos

  • Assessed square-wave jerks (SWJs) and abnormal tracking patterns; employed logistic regression and ROC analysis.

    • Main Results:

    • PD patients exhibited higher SWJ rates, reduced pursuit gain, prolonged saccade latency, and slower saccade velocity.
    • SWJs, decreased pursuit gain, and prolonged saccade latency were strongly associated with PD.
    • A combined index achieved 77.8% sensitivity and 82.2% specificity (AUC=0.836).

    Conclusions:

    • VOG assessment reveals significant oculomotor abnormalities in PD, affecting fixation stability, smooth pursuit, and saccadic control.
    • A combined index of SWJs, pursuit gain, and saccade latency improves PD screening precision.
    • VOG is a valuable tool for detecting and potentially screening for Parkinson's disease.