You searched for "visual"

1781 results found

Transient visual loss caused by crowded optic discs

The author presents four cases of transient visual loss (TVL) in young females (age range at presentation 14-22 years) with crowded optic discs. Patient demographics, investigations, medical and social histories are provided for all patients. A review of evidence for...

Eyes on the road – visual standards for car drivers

The author examines the current visual standards required by drivers and asks whether more needs to be done to make roads safer. Are the public adequately protected by the current system of visual standards required by drivers? In a survey...

Visual outcome and surgical results in children with Marfan Syndrome

Eighty-two eyes of 41 patients with a genetically proven diagnosis of Marfan syndrome were retrospectively analysed. Twenty-seven had bilateral subluxation and 14 received lensectomy. Follow-up was three years. Mean visual acuity (VA) was 0.1 ±0.7 logMAR in patients with normal...

Retinotopic fMRI reveals visual dysfunction and functional reorganisation in the visual cortex of glaucoma patients

This study investigated the retinotopic functional representation in the visual cortex of mild to moderate primary open-angle glaucoma (POAG) participants and age-matched normal volunteers, using wide-view visual presentation, high-resolution retinotopic stimuli, and high-resolution blood oxygenation level dependent (BOLD) functional magnetic...

Clinical and neuro-ophthalmologic predictors of visual outcome in idiopathic intracranial hypertension

This prospective study of 40 patients aims to assess visual morbidity in patients with idiopathic intracranial hypertension (IIH). Final visual outcome of patients was compared with clinical and neuro-ophthalmic parameters such as visual acuity, visual field, contrast sensitivity, retinal nerve...

Higher risk of poor functional outcome in the presence of visual deficits post-stroke

The authors present a retrospective case review with the aim of reporting the disability outcomes of individuals 90-days post stroke with and without visual deficits. The Houston Methodist Hospital Outcomes-based Prospective Endpoints in Stroke (HOPES) Registry was used as the...

FAQs about cerebral visual impairment (CVI): identifying and helping those affected

Cerebral visual impairment is common in both adults and children, yet the diagnosis can easily be missed unless one is tuned into the presenting features. This article provides a succinct introduction to this important topic. What is vision? Vision is...

Treatment for post stroke visual impairment – clinical practice versus literature evidence

The aim of this paper is to compare the treatments reported in a large scale stroke study (Vision in stroke (VIS) Study) against the treatments identified in a full systematic literature review. The purpose was to identify which treatment /...

Retrospective review of visual outcomes in Idiopathic intracranial hypertension (IIH)

Idiopathic intracranial hypertension (IIH) is a clinical syndrome characterised by headache and papilloedema that can lead to significant visual morbidity. IIH is diagnosed by the modified Dandy criteria, which include normal neuroimaging and cerebrospinal fluid (CSF) composition, high CSF opening...

Functional visual field loss using automated static perimetry

Functional visual field loss is traditionally assessed by kinetic perimetry, typically producing spiralling isopters. This study looked at the spatial distributions of functional field deficits using automated static perimetry. A retrospective review of automated perimetry records was conducted using a...

Comparison of visual fields between migraine and tension type headaches

The aim of the study was to compare the clinical features and visual fields of patients with migraine without aura and tension type headache. Visual fields were assessed whilst the patients were having an attack of pain and tested using...

Simulating the visual impairment symptoms of age-related macular degeneration in virtual reality

A new virtual reality application visually simulates age-related macular degeneration and demonstrates its progression over time including some Charles Bonnet syndrome hallucinations. Introduction Age-related macular degeneration (AMD) is the leading cause of blindness in developed countries with the prevalence of...