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Ocular motor abnormalities in human immunodeficiency virus infection
P T Merrill1, G D Paige, R A Abrams
1Department of Neurology, Washington University School of Medicine, St Louis, MO.
Annals of Neurology
|August 1, 1991
Summary
Human immunodeficiency virus (HIV) infection impairs ocular motor function, particularly saccade accuracy. Most HIV-positive individuals exhibit ocular motor abnormalities, affecting visual processing and neurological health.
Area of Science:
- Neuroscience
- Ophthalmology
- Infectious Diseases
Background:
- Human immunodeficiency virus (HIV) infection can affect the central nervous system.
- Ocular motor deficits are potential indicators of neurological compromise in HIV-positive individuals.
Purpose of the Study:
- To investigate ocular motor performance in individuals with HIV infection across different disease stages.
- To identify specific ocular motor abnormalities associated with HIV and its progression.
Main Methods:
- Compared ocular motor performance (saccade accuracy, duration, velocity, latency, fixation stability, smooth pursuit gain) in 47 HIV-positive subjects and 25 controls.
- Assessed performance in simple and complex antisaccade tasks.
Main Results:
- Saccade accuracy was significantly poorer in all HIV-positive groups compared to controls.
- Increased saccade duration scatter and reduced smooth pursuit gain were observed in HIV-positive groups.
- Antisaccade accuracy and latency were impaired in various HIV-positive groups, with fixation stability worse in AIDS dementia patients.
Conclusions:
- Ocular motor performance deficits are prevalent in individuals with HIV infection, even in asymptomatic stages.
- Impaired saccade accuracy and antisaccade tasks suggest widespread neurological impact of HIV.
- Ocular motor testing can serve as a sensitive biomarker for HIV-related neurological complications.