Abstract
In (1) errors appeared within the text of the case report outline regarding the direction of gaze and secondary deviation. The corrected text is reproduced with-in the paragraph below.
On examination in the emergency department (ED), he was afebrile with a blood pressure of 160/80 mmHg and a pulse of 65 beats per minute. General medical examination performed interictally following the prolonged cluster headache revealed a thin young African- American man who was seated on a hospital stretcher in obvious distress with his hands pressed against his left eye in a dimly lit ED room. Neurological examination demonstrated partial ptosis, miosis, conjunctival injection and severe monocular photophobia, all on the left. In addition, the left eye was slightly esotropic on primary gaze, with restricted abduction of the left eye on left lateral gaze. Severe binocular horizontal diplopia was present in the left direction of gaze. When the patient fixated with the paralytic left eye there was secondary deviation of the right eye to the left. All aspects of third, fourth, fifth and seventh cranial nerve function were intact. The remainder of the neurologic examination was normal. Routine chest X-ray, cerebrospinal fluid examination and haematological tests including complete blood count, coagulation studies, ANA, ACE level, erythrocyte sedimentation rate and C-reactive protein were unremarkable. MRI studies performed with and without gadolinium, as well as MR angiography (MRA) of the brain were unrevealing. Specifically, the meninges and cavernous sinus were entirely within normal limits, and there was no side-to-side asymmetry on the MRA involving the cavernous, supraclinoid or petrous segment of the internal carotid artery.