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Three methods of suppression measurement

Test-retest reliability and interchangeability are evaluated for three filter bars available to measure density of suppression: Sbisa bar, Bagolini filter (BF) bar and neutral density filter (NDF) bar. The study involved 10 strabismic adults. Testing conditions were altered and effects...

Resveratrol protects against steroid induced intraocular pressure

Topical and systemic steroid delivery is a very effective treatment for many ocular conditions but is compromised by raised intraocular pressure which in turn leads to death of retinal ganglion cells and irreversible blindness. This is an important consideration with...

IOP measures after intraocular chemotherapy

This study aimed to describe the relationship between intravitreal chemotherapy and IOP in children with retinoblastoma and identify risk factors for pronounced elevations. This was a retrospective study of ten cases (ten eyes) with 17 encounters overall. Mean age was...

Nicotine accelerates diabetes induced retinal changes

This study investigated the influence of nicotine in an experimentally induced diabetic rat model. They used non-invasive high-resolution spectral domain optical coherence tomography (SD-OCT) imaging to provide quantitative information on the temporal alterations of retinal structures at the micrometer resolution...

Effect of voriconazole of vision of healthy volunteers

Voriconazole is a broad spectrum, triazole antifungal agent used for systemic fungal infections. It has a favourable safety profile and is available in both intravenous and oral forms. The commonest adverse drug reactions with voriconazole are changes in visual perception,...

Sleep positions and the effect on IOP

The authors describe a study to determine if sleeping at a 20 degree head up position decreases nocturnal IOP compared with lying supine in patients with and without glaucoma. They recruited 30 patients (60 eyes) 15 with glaucoma and 15...

Reduced blood flow and age-related macular degeneration

This was a prospective cross-sectional study assessing changes in blood flow velocity in patients with age-related macular degeneration (AMD) using a retinal function imager. Sixty eyes with wet AMD were compared to 53 control eyes and the average blood flow...

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...

OCT-A imaging in Grave’s orbitopathy and orbital decompression

In this case series of 12 patients and 24 orbits, the authors describe the changes in the optic nerve and peripapillary blood vessel density in patients with moderate to severe Grave’s Orbitopathy (GO) undergoing orbital decompression. The patients undergoing orbital...

Intraocular pressure changes following TOHM washout

This retrospective study between 2008 and 2019 of 110 eyes with primary open angle glaucoma (POAG), 33 eyes with ocular hypertension (OHT) and 43 eyes with uveitic glaucoma (UG) evaluated the changes in intraocular pressure (IOP) following topical ocular hypotensive...

Differences between ages and onset in functional network changes associated with reading Braille

Visual impairment affects learning ability, speed and accuracy required for reading, writing and learning memory in terms of educational performance. Braille training requires decoding of simple dots into meaningful words and sentences. The objectives of this study were to evaluate...

Screening for visual processing deficits in dementia

The Queen Square Screening test for Visual Deficits (QS test) screens for changes in visual processing. It has never been formally validated as a single test. The test consists of a short booklet developed using remnant object and spatial perception...