_:vb50953783 "url:http://www.ninds.nih.gov/disorders/dystonias/detail_dystonias.htm"^^ . _:vb50953783 . _:vb50953783 . _:vb50953783 "A focal dystonia that is characterized by the involuntary, forcible contraction of the muscles controlling eye blinks."^^ . _:vb50953783 . _:vb50953783 . _:vb50953783 .