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Eye Movement Alterations in Post-COVID-19 Condition: A Proof-of-Concept Study.

Cecilia García Cena¹, Mariana Campos Costa^2,3, Roque Saltarén Pazmiño⁴

¹ETSIDI-Center for Automation and Robotics, Universidad Politécnica de Madrid, Ronda de Valencia 3, 28012 Madrid, Spain.

Sensors (Basel, Switzerland)

|February 26, 2022

Summary

This summary is machine-generated.

This study reveals that individuals with post-COVID-19 condition exhibit eye movement alterations, specifically in visually guided and memory-guided saccades, and antisaccades. These findings suggest potential neurological impacts of the SARS-CoV-2 virus.

Keywords:

eye movement pathophysiology post-COVID-19 condition saccadic movement wearable gaze-tracker

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Area of Science:

Neurology
Ophthalmology
Neuroscience

Background:

Eye movement abnormalities are documented in various neurological disorders.
The impact of post-COVID-19 condition on neurological functions, including eye movements, remains largely unexplored.
Video-oculography (VOG) is a valuable tool for objectively measuring eye movement parameters.

Purpose of the Study:

To investigate potential alterations in eye movements in individuals with post-COVID-19 condition.
To compare eye movement characteristics between patients with post-COVID-19 condition and healthy controls.
To identify specific saccadic eye movement deficits associated with post-COVID-19.

Main Methods:

A video-oculography study was conducted on nine patients with post-COVID-19 condition and nine healthy controls.
Horizontal visually guided saccades, memory-guided saccades, and antisaccades were measured under a gap condition.
Key metrics included reaction times (latencies), success rates, and blink frequency.

Main Results:

Patients with post-COVID-19 showed significant alterations in centripetal latency for visually guided saccades.
Reduced success rates in memory-guided saccade tasks were observed in the post-COVID-19 group.
Increased latency and standard deviation in antisaccade performance suggest frontoparietal network involvement.

Conclusions:

Post-COVID-19 condition is associated with specific eye movement alterations, particularly affecting saccadic control.
The observed deficits may indicate underlying neurological dysfunction involving frontoparietal pathways.
Further research is needed to elucidate the functional consequences and long-term implications of these eye movement changes.