You searched for "Optics"

2000 results found

Jun/Jul 2014 Quiz

History An 80-year-old male had a cataract removed with intraocular lens (IOL) seven years previous. He presented with cloudy vision and it was noted that the IOL was intrinsically opaque. The IOL was replaced and sent for ophthalmic pathology assessment....

Predicting causes and prognosis in cases of optic disc swelling

The authors reviewed 93 consecutive cases with optic disc swelling (ODS) with the purpose of comparing the clinical manifestations and prognosis between cases. The aim was to understand the differences in frequency and clinical features of ODS, relating these to...

Risk factors for non-arteritic ischaemic optic neuropathy in an Asian population

The authors reviewed the medical records of 45 Korean patients with non-arteritic anterior ischaemic optic neuropathy (NAION) and 45 healthy controls, in order to determine risk factors for the condition in an Asian population. Previous studies looking at risk factors...

Statins inhibit TGFβ2 mediated fibrotic response in astrocytes

Glaucoma is a common condition where increased ocular pressure can lead to death of retinal ganglion cells due to impaired drainage of fluid from the eye. One mechanism involved in glaucoma is remodelling of the extracellular matrix at the lamina...

Optic disc haemorrhages as a risk factor for poor outcomes in IIH

This is a report of a review of optic disc photographs, of the type and frequency of the optic disc haemorrhages (ODH), papilloedema grades and other fundoscopic abnormalities at baseline. In the study eyes of 133 patients enrolled in the...

Use of the RAPDx device to evaluate efficacy of treatment in patients with optic nerve disease

The RAPDx objectively determines the RAPD magnitude by alternately presenting light stimuli to each eye and deriving amplitude and latency scores. The authors of this paper evaluated the amplitude and latency scores from the RAPDx together with other ophthalmic investigations...

Is exenteration helpful in invasive fungal sinusitis?

Invasive fungal sinusitis is a potentially lethal disease that causes painful orbital apex syndrome with ophthalmoplegia and visual loss. The mechanism of ophthalmoplegia and visual loss is not clear, and neither is the role of radical surgery-orbital exenteration. The authors...

Referrals to neuro-ophthalmology

The authors present the findings of a retrospective records review of 300 new patients at a single tertiary neuro-ophthalmology clinic by two ophthalmologists. The case selection was taken from 45 randomly selected days over a four-year period. The authors reported...

A case presentation of morning glory disc anomaly and peripapillary staphyloma

The purpose of this paper is to present a case of an 18-month-old girl initially presenting with strabismus. Fixation of the affected eye was intermittent with a relative afferent pupillary defect. A fundus photography of the affected left eye showed...

Case report review of children with septo-optic dysplasia and optic nerve hypoplasia

Septo-optic dysplasia (SOD) and optic nerve hypoplasia (ONH) cause congenital visual impairment. Their aetiology is mostly unknown. The authors aim was to investigate the prevalence of specified ophthalmological features in patients with these disorders. These features included impaired visual acuity,...

Using a tumour registry to investigate optic nerve gliomas

This study is a retrospective comparative analysis. Patients with optic nerve glioma and pilocytic astrocytoma were identified through the Surveillance, Epidemiology and End Results (SEER) cancer registry covering a 42-year period using standardised codes. The following data was extracted: basic...

Predicting visual prognosis of patients with methanol poisoning

Symptoms of methanol poisoning often occur 12–24 hours after oral consumption, and visual symptoms are seen in approximately 50% of cases. This study aims to investigate the role of optic nerve diffusion status on cranio-orbital magnetic resonance imaging (MRI) in...