Analysis of blink activity and anomalous eyelid movements in patients with hemifacial spasm. - Osaki MH; Osaki TH; Garcia DM; Osaki T; Gameiro GR; Belfort R Jr; Cruz AAV (Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2020)