Abstract:We performed pupillometer testing on 132 patients with Parkinson’s disease, stratified into two groups according to the disease severity. Neurological examinations and pupillometry were performed in the ON state. Patients in the Hoehn and Yahr stages 1 and 2 comprised the early group, and patients in stages 3-5 formed the late group. We performed age- and sex-matched (2:1) propensity score matching to compensate for the effect of age on pupil light reflex. Eight pupillometer parameters were measured and compar… Show more
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