Assertion: viagra's side effect | /r/HasProperty | abnormal vision
Facets:
Source sentences:
text: A less common side effect is abnormal vision.
text: The frequent vardenafil-specific side-effect is nausea; the infrequent side effects are abdominal pain, back pain, photosensitivity, abnormal vision, eye pain, facial edema, hypotension, palpitation, tachycardia, arthralgia, myalgia, rash, itch, and priapism.