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Oculometric biomarkers of visuomotor deficits in clinically asymptomatic patients with systemic lupus erythematosus undergoing long-term hydroxychloroquine treatment.
Front Ophthalmol (Lausanne)
July 2024
Human Systems Integration Division, Ames Research Center, National Aeronautics and Space Administration, Moffett Field, CA, United States.
Introduction: This study examines a set of oculomotor measurements, or "oculometric" biomarkers, as potential early indicators of visual and visuomotor deficits due to retinal toxicity in asymptomatic Systemic Lupus Erythematosus (SLE) patients on long-term hydroxychloroquine (HCQ) treatment. The aim is to identify subclinical functional impairments that are otherwise undetectable by standard clinical tests and to link them to structural retinal changes.
Methods: We measured oculomotor responses in a cohort of SLE patients on chronic HCQ therapy using a previously established behavioral task and analysis technique.
Effects of stroboscopic training on visual, visuomotor and reactive agility in youth volleyball players.
PeerJ
June 2023
Department of Team Sports Games, Wroclaw University of Health and Sport Sciences, Wroclaw, Poland.
Background: Stroboscopic training is based on an exercise with intermittent visual stimuli that force a greater demand on the visuomotor processing for improving performance under normal vision. While the stroboscopic effect is used as an effective tool to improve information processing in general perceptual-cognitive tasks, there is still a lack of research focused on identifying training protocols for sport-specific settings. Therefore, we aimed at assessing the effects of stroboscopic training on visual, visuomotor and reactive agility in young volleyball players.
View Article and Find Full Text PDFVision and Visuomotor Performance Following Acute Ischemic Stroke.
Front Neurol
February 2022
Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, VIC, Australia.
Background: As measurable sensory and motor deficits are key to the diagnosis of stroke, we investigated the value of objective tablet based vision and visuomotor capacity assessment in acute mild-moderate ischemic stroke (AIS) patients.
Methods: Sixty AIS patients (65 ± 14 years, 33 males) without pre-existing visual/neurological disorders and acuity better than 6/12 were tested at their bedside during the first week post-stroke and were compared to 40 controls (64 ± 11 years, 15 males). Visual field sensitivity, quantified as mean deviation (dB) and visual acuity (with and without luminance noise), were tested on MRFn (Melbourne Rapid Field-Neural) iPad application.
Physical Activity Is Associated with Improved Visuomotor Processing in Older Adults with Moderate and Advanced Glaucomatous Visual Field Defect: A Cross-Sectional Study.
Int J Environ Res Public Health
February 2022
II Department of Ophthalmology, Pomeranian Medical University, 70-111 Szczecin, Poland.
Glaucoma affects a wide spectrum of daily essential activities in older adults. This study examined whether older adults with moderate and advanced stages of glaucoma exhibit differences in visuomotor task performance compared with age- and gender-matched ophthalmologically healthy control subjects and estimated the effects of physical activity (PA) levels, age, and severity of visual impairment on patients' visuomotor task performance. Sixty older adults with moderate glaucoma, advanced glaucoma, and normal sight participated in the study.
View Article and Find Full Text PDFWhat is the Nature of the Reach-and-Grasp Deficit in Glaucoma?
J Glaucoma
September 2020
CNRS, CHU Lille, UMR 9193-SCALab-Sciences Cognitives et Sciences Affectives.
Article Synopsis
- Glaucoma patients showed motor impairments in reach-and-grasp tasks, particularly when they didn't have time to visually explore their environment before performing the task.
- The study involved 16 glaucoma patients and compared their performance with 14 age-matched and 18 younger controls, revealing significant differences mainly in the immediate condition.
- Findings suggest that the difficulties encountered by glaucoma patients during reaching tasks are linked more to target identification challenges rather than overall visual-motor problems, indicating that rehabilitation efforts should consider the timing of tasks.
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