Related Experiment Video
Updated: Apr 14, 2026
Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
Published on: August 22, 2025
Evaluation of Postural Control in Patients with Glaucoma Using a Virtual Reality Environment
Alberto Diniz-Filho1, Erwin R Boer2, Carolina P B Gracitelli3
1Visual Performance Laboratory, Department of Ophthalmology, University of California, San Diego, La Jolla, California; Department of Ophthalmology and Otorhinolaryngology, Federal University of Minas Gerais, Belo Horizonte, Brazil.
Patients with glaucoma exhibit poorer postural control, especially with dynamic visual stimuli. New virtual reality metrics accurately link balance issues to a history of falls, improving understanding of glaucoma-related fall risk.
Area of Science:
- Ophthalmology
- Neuroscience
- Biomechanics
Background:
- Glaucoma is a leading cause of irreversible blindness.
- Visual field defects in glaucoma can impair postural control and increase fall risk.
- Current methods for assessing balance in glaucoma patients may not fully capture dynamic visual influences.
Purpose of the Study:
- To evaluate postural control in glaucoma patients using a dynamic virtual reality environment.
- To investigate the relationship between specific postural metrics and a history of falls in glaucoma.
- To assess the utility of novel virtual reality-based balance assessment tools.
Main Methods:
- A cross-sectional study involving 42 glaucoma patients and 38 healthy controls.
- Postural stability was measured using a force platform with dynamic visual stimuli (rotational and translational) presented via virtual reality goggles.
- Somatosensory and vestibular contributions were assessed in a dark field; fall history was collected via questionnaire.
Main Results:
- Glaucoma patients demonstrated significantly poorer postural stability (larger standard deviations of torque moments) compared to controls under both translational and rotational dynamic visual stimuli.
- Postural metrics derived from dynamic visual stimuli were more predictive of fall history than static or dark field conditions.
- Mediolateral standard deviations during translational stimuli were strongly associated with a history of falls in glaucoma patients.
Conclusions:
- A novel virtual reality paradigm effectively evaluates balance control in glaucoma patients by assessing postural reactivity to dynamic visual stimuli.
- The developed postural metrics show a significant association with a history of falls.
- This approach offers a promising tool for better understanding and potentially mitigating fall risk in individuals with glaucoma.
