Abstract
Parkinson′s disease (PD) is a common neurodegenerative disease characterized by bradykinesia, resting tremor, muscle rigidity, and abnormal gait posture. Ocular motor function test plays an important part in neurological examinations. It has been widely accepted that specific ocular motor patterns contribute to diagnosis of Parkinsonian syndrome including progressive supranuclear palsy and multiple system atrophy. However, recent studies have shown that patients of PD may also exhibit specific eye movement disorders, which will be helpful in the early diagnosis, evaluation and differential diagnosis of PD. In 2015, the Movement Disorder Society clinical diagnostic criteria for Parkinson′s disease suggested that sustained staring evoked nystagmus could be used as an exclusive criterion for PD. The clinical features, detection methods and clinical significance of oculomotor dysfunction in PD are reviewed in this article. Key words: Parkinson disease; Ocular motility disorders; Saccades
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