You searched for "lasers"

2541 results found

Air toxicity on retinal pigment epithelium

This study investigated the potential toxic effects of air on primary human retinal pigment epithelial (RPE) cells in vitro. Clinically during pars plana vitrectomy air is used as either a temporary tamponade during air-fluid exchange or mixed with gas to...

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...

Reproducible OCT RNFL map in unilateral glaucoma

The aim of the study was to compare the reproducibility of the optical coherence tomography retinal nerve fibre layer (OCT RNFL) thickness map between glaucomatous and fellow normal eyes of unilateral glaucoma patients. The authors carried out a prospective case...

Gender and ethnicity related differences in optic nerve head

The authors investigated the effect of ethnicity and gender on optic nerve head morphology comparing Indian and Caucasian males and females. The optic nerve head was investigated using spectral-domain optic coherence tomography (SD-OCT). Results showed that disc and rim areas...

Choroidal thickness in ocular sarcoidosis by OCT measurement

This is the first study to evaluate the choroidal thickness in patients with ocular sarcoidosis during the quiescent phase using enhanced depth imaging optical coherence tomography (EDI-OCT) and comparing with normal subjects. Ocular sarcoidosis may affect the choroidal circulation (occlusive...

Correlation between structural and functional status of optic nerve and retina in multiple sclerosis

Multiple sclerosis (MS) involves autoimmune inflammatory demyelination and axonal degeneration in the central nervous system. Investigation of the retina and optic nerve head (ONH) is an ideal way to visualise this demyelination. This study investigates the functional and structural properties...

Visual outcomes, visual fields and optical coherence tomography in paediatric craniopharyngioma

This study reviews the visual outcomes of ten patients under the age of 18 years with craniopharyngioma. The paper also reviews the correlation between visual field (VF) testing and optical coherence tomography (OCT) examination and evaluates the role of OCT...

Effects of blood donation on the physiology of the eye

Hypovolaemia is a state of decreased blood volume, the reduction of which reduces tissue perfusion which may in turn lead to cellular hypoxia and end-organ damage. In blood donation, 500ml of blood is collected in ten minutes. This equates to...

Prediction of visual outcome in IIH

In this prospective study, visual outcome of 40 patients with idiopathic intracranial hypertension (IIH) was compared with clinical and neuro-ophthalmic parameters. The purpose of this was to determine any correlation to try and predict visual outcome for IIH patients. Parameters...

Glaucoma and capillary perfusion

Elevated IOP is important but not the sole factor responsible for retinal ganglion cell (RGC) death and optic nerve damage in glaucoma. There is increasing evidence that visual loss correlates with macular inner retinal thinning. A total of 148 eyes...

Smartphone use and its effects on eyes

Longitudinal pilot study on 12 young healthy adults comparing effects of smartphone use over a 60-minute period. Reading conditions and smartphone use was standardised for all participants. Ocular symptoms, tear function and binocular vision were assessed before and after each...

A novel way to diagnose optic neuropathies using Bruch’s membrane opening

Differential diagnosis of optic neuropathies can be challenging but is crucial for the correct management of the underlying disease and prevention of further damage. Bruch’s membrane opening (BMO) was recently discovered as the anatomical border of the optic disc. BMO...