Neuro-Ophthalmic Complications of Vestibular Schwannoma Resection: Current Perspectives.

Vestibular schwannomas (VSs), also called acoustic neuromas, are benign intracranial neoplasms of the vestibulocochlear (VIII) cranial nerve. Management options include "wait-and-scan," stereotactic radiosurgery and surgical resection. Due to the proximity of the VIII nerve to the facial (VII) nerve in the cerebello-pontine angle, the VII nerve is particularly vulnerable to the effects of surgical resection.

Is a virtual clinic model a safe and effective way for assessing patients referred with suspiciously blurred optic discs? The blurred disc clinic.

Background: There are increasing numbers of referrals to ophthalmology departments due to blurred optic disc margins. In light of this and the COVID-19 pandemic we aimed to assess whether these patients could be safely assessed without direct contact between the clinician and patient.

Methods: We retrospectively reviewed the records of consecutive patients seen in our 'blurred disc clinic' between August 2018 and October 2019.

The Utility of Fundus Fluorescein Angiography in Neuro-Ophthalmology.

While its use is still widespread within the medical retina field, fundus fluorescein angiography (FFA) is increasingly falling out of favour in the investigation of neuro-ophthalmological disease, with the introduction of new technologies, particularly optical coherence tomography. FFA does, however, provide useful diagnostic and prognostic information in many neuro-ophthalmological diseases including papilloedema, pseudo-papilloedema, optic neuropathies and central retinal artery occlusion to name a few. We aim to summarise the main FFA findings in each of these conditions and highlight where FFA is of most use in providing complementary information to other modes of investigation.

Do Optic Canal Dimensions Measured on CT Influence the Degree of Papilloedema and Visual Dysfunction in Idiopathic Intracranial Hypertension?

A recent study found that increased optic canal area on magnetic resonance imaging was associated with worse papilloedema in idiopathic intracranial hypertension (IIH). We repeated this study using more accurate computerized tomography derived measurements. Optic canal dimensions were measured from 42 IIH patients and 24 controls.

A Stereotyped Syndrome with Retro-Ocular Pain, Photophobia, and Visual Disturbance Masquerading as Optic Neuritis: Case Series.

We describe here a case series of six patients referred to the Neuro-ophthalmology service in Sheffield, UK with possible acute unilateral optic neuritis. Each patient had a triad of unilateral photophobia, ipsilateral retro-ocular pain, and ipsilateral loss of vision. All patients had normal ocular examinations and investigation findings with no objective structural or functional abnormalities identified.

Unilateral compressive optic neuropathy due to skull hyperostosis secondary to nutritional vitamin A deficiency.

We report a 17-year-old boy who presented with a chronic left unilateral optic neuropathy. Computerized tomography and magnetic resonance imaging demonstrated compression of the left optic nerve due to skull hyperostosis. He was found to be profoundly vitamin A deficient secondary to an unusual diet consisting predominantly of potato chips and crisps.

Relapsing-Remitting Sixth Nerve Palsy in Association with Ollier's Disease.

Relapsing-remitting sixth nerve palsy is usually due to ophthalmoplegic migraine (recurrent cranial nerve palsy) in younger patients and microvascular disease in older patients. There have been isolated reports, however, of it occurring in the presence of a skull base tumour. We report a 20-year-old woman with Ollier's disease who presented with a relapsing-remitting sixth nerve palsy.

Bilateral Homonymous Hemianopia with Sparing of the Vertical Meridian.

A 19-year-old woman, who was 16 weeks post partum, collapsed with loss of consciousness. Following awakening she suffered abrupt loss of vision. Partial recovery occurred, although she has been left with bilateral homonymous hemianopia with sparing of vision just to the left of the vertical meridian.

Decompensating esophoria as the presenting feature of myasthenia gravis.

Myasthenia gravis is a disease in which antibodies directed at nicotinic acetylcholine receptors are produced, leading to a deficiency of acetylcholine receptors at the neuromuscular junction. This results in impairment of muscular excitation, which appears clinically as fatigable muscle weakness. Weakness of the extraocular muscles occurs in nearly 90% of all myasthenics at disease onset, with ptosis being the most common presenting feature.