Transient third nerve palsy after percutaneous coronary intervention - A case report.

Oculomotor nerve palsy is a rare complication of interventional cardiac procedures. We report a case of a 64-year-old male who developed diplopia after he underwent a percutaneous transluminal coronary angioplasty (PTCA) for double-vessel disease. Ocular examination revealed partial third nerve palsy in his right eye. His anterior and posterior segment examinations were within normal limits. Brain MRI revealed a hyperacute infarct in the right paramedian region of the superior colliculus. MR angiography displayed stenosis in his right internal carotid artery in the cervical region. He was managed conservatively with anticoagulants and statins, and his ocular movements gradually improved without any active ocular intervention. This case highlights the potential risk of neurological complications following an invasive cardiac procedure.