You searched for " retina"

1510 results found

Inflammation and microvascular changes in diabetic retinopathy

Studies have shown that neurodegeneration and inflammation in the retina start early in diabetic retinopathy (DR) and can be present before the latter is clinically evident. The aim of this retrospective review of 99 diabetic patients was to evaluate retinal...

Bionic eyes: deciphering the neural circuitry of vision restoration

As the boundaries between technology and biology blur, retinal prosthetics, often dubbed ‘bionic eyes’, present a ground-breaking paradigm shift in addressing blindness. This article delves into the captivating scientific intricacies of these neural interfaces, exploring their mechanisms of action, current...

Optos announces new ultra-widefield colour image modality, providing additional retinal visualisation to eyecare professionals

Optos, Plc, the leading retinal imaging company, announces it is expanding the optomap® ultra-widefield (UWF™) retinal imaging modalities available with the California FA device to further assist eyecare professionals in disease management and treatment planning.

Histopathological changes in rabbit retinitis pigmentosa

The authors report the histopathological changes of retinal ganglion cells (RGCs), optic disc and optic nerve in rabbit with advanced retinitis pigmentosa (RP). RP was recreated in rabbits by using bacterial artificial chromosome transgenesis, with the purpose of increasing understanding...

Age-related macular degeneration

This review article offers an up to date review of the genetic and environmental risk factors associated with aetiology surrounding age-related macular degeneration (AMD). The article briefly describes the typical clinical presentation relating to early and late stages of the...

Retinal blood flow changes in glaucoma

This study examined the changes in retinal blood flow and vessel diameter after IOP reduction in high- and low-pressure glaucoma; exfoliation glaucoma (ExG) and normal-tension glaucoma (NTG). Glaucoma progression is seen at times in eyes despite IOP reduction and changes...

Can OCT predict Alzheimer’s disease?

Simerdip Kaur takes a look at the latest ophthalmology-related news stories and asks which are based on facts and which are ‘fake news’. Headline: Can OCT predict Alzheimer’s disease? In 1986 Hinton et al. demonstrated evidence of optic nerve degeneration...

What's trending Dec/Jan 2023

A round-up of the eye related hot topics that have been trending on social media over the last few weeks. #frightnight #halloween #protectyoureyes The Royal College of Optometrists advised the public against wearing novelty contact lenses this Halloween. In a...

Somatostatin protects retinal pericytes

Diabetic retinopathy (DR) is a complication of diabetes, caused by high blood sugar levels damaging the retinal microvasculature. Mechanisms, such as oxidative stress and deposition of advanced glycation end products, leads to glial cell activation and neuronal apoptosis. Pericytes, contractile...

The challenge of chorioretinal folds in virtual eye clinics

Chorioretinal or choroidal folds are parallel striations involving the retina, retinal pigment epithelium (RPE), Bruch’s membrane, and inner choroid [1]. They can arise from compressive stress on these layers, and their presence often serves as a diagnostic marker for underlying...

Light reflex in preterm infants

In this study, the pupillary size and light reflex was examined in premature infants using infrared video-pupillography and stimuli of red and blue light. Only eyes of infants without retinopathy of prematurity were included in the study. Pupillary light reflexes...

Macular pigment and dark adaptation in older population with normal maculas

Macular pigment (MP) such as lutein, zeaxanthin and meso-zeaxanthin are highly concentrated in the fovea. They protect the retina from damage of ambient blue light via antioxidant properties. In older eyes with normal healthy retina, macular pigment optical density (MPOD)...