This name has been given to narrowing of the palpebral fissure aggravated by smiling following a contralateral lenticulocapsular infarction. Dysarthria, facial paresis, hemiparesis with or without hemihypoesthesia, and excessive laughing with or without crying, were common accompanying features.
Kim JS. Smile-wink phenomenon: aggravated narrowing of palpebral fissure by smiling after lenticulocapsular stroke. Journal of Neurology2001; 248: 389-393