title: Caution on the preoperative use of topical timolol.
mesh_terms: D000287:Administration, Topical; D006331:Heart Diseases / Q000139:chemically induced; D006801:Humans; D011300:Preoperative Care; D011412:Propanolamines / Q000009:adverse effects*; D013999:Timolol / Q000009:adverse effects*
chemical_list: D011412:Propanolamines; D013999:Timolol