Cataract surgery and alpha-blocker drugs don't mix well.
D000317:Adrenergic alpha-Antagonists; D002387:Cataract Extraction; D000075202:Contraindications; D006801:Humans; D007431:Intraoperative Complications / Q000139:chemically induced*; D007498:Iris / Q000187:drug effects*; D011680:Pupil / Q000187:drug effects
D000317:Adrenergic alpha-Antagonists