Publications by authors named "Valerie A Purvin"

Background: Optic perineuritis (OPN), an uncommon optic neuropathy, has previously not been described in patients with Behçet disease (BD). We conducted this study to describe the clinical features, response to treatment, and outcome of OPN due to BD, with particular emphasis on those features that might distinguish this from the idiopathic variety.

Methods: This is a retrospective, case series review of all patients with a diagnosis of OPN seen in a hospital-based neurology department from 2008 to 2014 who also met the international criteria for the diagnosis of BD.

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Background: Cranial nerve schwannomas are radiologically characterized by nodular cranial nerve enhancement on magnetic resonance imaging (MRI). Schwannomas typically present with gradually progressive symptoms, but isolated reports have suggested that schwannomas may cause fluctuating symptoms as well.

Methods: This is a report of ten cases of presumed cranial nerve schwannoma that presented with transient or recurring ocular motor nerve deficits.

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Chiasmal dysfunction produces a characteristic clinical picture, regardless of the mechanism. In most cases a compressive lesion is the cause. In occasional cases, however, no such extrinsic mass is found and other possible etiologies must be explored.

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Objective: To better define the concordance of visual loss in patients with nonarteritic anterior ischemic optic neuropathy (NAION).

Methods: The medical records of 86 patients with bilateral sequential NAION were reviewed retrospectively, and visual function was assessed using visual acuity, Goldmann visual fields, color vision, and relative afferent papillary defect. A quantitative total visual field score and score per quadrant were analyzed for each eye using the numerical Goldmann visual field scoring method.

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Background: Previous reports have emphasized the self-limited nature of idiopathic neuroretinitis. There is less information about a subgroup of patients who suffer recurrent episodes with worse visual outcome. We sought to better characterize the clinical features of recurrent idiopathic neuroretinitis including the effects of immunosuppressive treatment.

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Objectives: To describe the clinical features of idiopathic chiasmal neuritis in a large cohort of patients and to report their visual and neurologic outcomes.

Design: A retrospective medical record review of consecutive patients with chiasmal neuritis at a single institution. Patients with clinical or radiographic evidence of inflammation involving the intraorbital optic nerve and patients with a systemic inflammatory or neoplastic disorder were excluded.

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Purpose: To describe an unusual form of acquired ocular motor apraxia.

Methods: Case reports with electronic eye movement recordings.

Results: Three patients had surgery to repair aortic root or arch dissections or aneurysms.

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Purpose: Superior oblique myokymia (SOM) is an uncommon disorder characterized by episodic monocular oscillopsia. Several medications have been reported to be of benefit for some patients with this condition, but the efficacy of medical treatment has not been well established and little long-term follow-up data are available. The purpose of this study was to better clarify the role of medical therapy in the management of SOM.

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A visually asymptomatic 27-year-old man was found to have inferior altitudinal visual field defects binocularly. Ophthalmoscopy revealed superior segmental optic pallor with superior nerve fiber layer atrophy, nicely highlighted in red-free photographs. The patient's mother had insulin-dependent diabetes mellitus.

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Purpose: To better define the long-term prognosis in patients with a vasculopathic sixth nerve palsy (6NP), specifically addressing the degree of recovery and incidence of recurrent similar episodes.

Design: Observational case series.

Methods: Retrospective chart review.

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Five patients with a chief visual complaint of photophobia were subsequently found to have compressive lesions of the optic chiasm. Visual acuity and visual field deficits were often subtle. Magnetic resonance imaging scanning revealed large suprasellar masses, including three pituitary adenomas, a craniopharyngioma, and a clivus chordoma.

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