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821 results found

Retinal changes in Leber hereditary optic neuropathy

The objective of this study was to describe the changes in the retinal ganglion cell complex (GCC) relative to the retinal nerve fibre layer (RNFL) over time, in patients with Leber’s hereditary optic neuropathy (LHON). For this study, 21 patients...

Central corneal and epithelial thickness measured by Fourier domain OCT

This study examined intraobserver and interobserver reproducibility of corneal thickness (CT) and epithelial thickness (ET) measurement of Fourier domain OCT (RTVue) in 23 healthy volunteers. RTVue is capable of producing 26,000 A scans per second with depth resolution of 5µm....

The prevalence of macular cysts in patients with clinical cone-rod dystrophy determined by spectral domain optical coherence tomography

Cone-rod dystrophy is a progressive photoreceptor disorder which has multiple inheritance patterns. It is rare, with a prevalence of 1 in 40,000. Macular cysts are well recognised in other photoreceptor conditions such as retinitis pigments and choroideraemia, while they are...

Swept source anterior segment OCT

The authors describe a study using the Casia OCT which is a swept source OCT to determine the visibility of the angle structures using two imaging protocols; high density and low density. They randomly selected one eye from 30 normal...

Accuracy of AS-OCT muscle insertion measurements

Anterior segment - optical coherence tomography (AS-OCT) is a non-contact imaging method that can provide accurate measures of extraocular muscles to limbus insertion distances. The authors evaluated the accuracy of AS-OCT for locating horizontal extraocular muscle insertions after strabismus surgery...

Accuracy of ASOCT muscle insertion measurements

Anterior segment optical coherence tomography (ASOCT) is a non-contact imaging method that can provide accurate measures of extraocular muscles to limbus insertion distances. The authors evaluated the accuracy of ASOCT for locating horizontal extraocular muscle insertions after strabismus surgery in...

Handheld OCT in children with Down’s syndrome

This article investigated the use of handheld optical coherence tomography (OCT) in children with Down’s syndrome. Fourteen children were recruited to the study with a mean age of 6 years and 10 months with 57% male. All patients were dilated....

The David J Apple International Laboratory for Ocular Pathology – a legacy of pioneering IOL research

David Apple and Gerd Auffarth. The Apple Lab at the David J Apple Center for Vision Research in Heidelberg is a thriving international laboratory for research into intraocular devices. The lab continues the work of David J Apple, a world-renowned...

Capacity-strengthening for diabetic retinopathy services in low- and middle-income countries

Introduction DR-NET eye health professionals in low- and middle-income countries (LMICs) have, since 2015, been able to access training in diabetic retinopathy (DR) grading provided by Gloucestershire Retinal Education Group (GREG). GREG, led by Professor Peter Scanlon and based at...

Ultra-widefield imaging in glaucoma: Documenting hypotony-related choroidal effusions after microshunt surgery

Ultra-widefield (UWF) imaging provides extended visualisation of the posterior segment beyond the traditional 30–50° field of view. It captures a broad view of the posterior pole and periphery in a single, quick, non-mydriatic acquisition. While its role in diabetic retinopathy...

The extended role of the specialist ophthalmic photographer

The prevalence of certain retinal conditions such as diabetic retinopathy and age-related macular degeneration (ARMD) is projected to grow substantially over the next decades. Estimates for the projected growth in burden on eye services for diabetic retinopathy and neovascular ARMD...

Fundus photography in Malawi – setting up a screening programmefor diabetic retinopathy

We present the case of a 53-year-old lady who presented to the diabetes outpatient clinic at Kamuzu Central Hospital (KCH), Lilongwe, Malawi. She was diagnosed with type 2 diabetes mellitus six years ago, for which she takes metformin orally. She...