Published online by Cambridge University Press: 05 March 2022
In this chapter we will describe how Parkinson’s disease (PD) affects patients’ eye movements, both bedside and laboratory, preceded by brief review of the anatomo-physiological substrate of eye movements. We will provide a practical summary of how to use the eye movement examination to aid the differential diagnosis of the parkinsonian syndromes, in particular idiopathic PD from multiple system atrophy (MSA), progressive supranuclear palsy (PSP), and corticobasal syndrome (CBS). A sub-section will describe how deep brain stimulation (DBS) also influences eye movements in PD. Despite a plethora of eye movement laboratory studies in PD it is still relatively unknown what the eye movements of these patients are like in real life. Given that the eyes move in order to see better, does the akinesia of PD impose visual deprivation or delays during ecological whole-body movements?.
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