The Analysis of Embryoid Body Formation and Its Role in Retinal Organoid Development.

Within the last decade, a wide variety of protocols have emerged for the generation of retinal organoids. A subset of studies have compared protocols based on stem cell source, the physical features of the microenvironment, and both internal and external signals, all features that influence embryoid body and retinal organoid formation. Most of these comparisons have focused on the effect of signaling pathways on retinal organoid development.

"Palliative care is so much more than that": a qualitative study exploring experiences of hospice staff and bereaved carers during the COVID-19 pandemic.

Background: The way in which end-of-life care was provided changed significantly during the first 2 years of the COVID-19 pandemic. The national lockdown restrictions reduced formal care support services and increased the burden on many carers taking on the caring role for the first time. We aimed to explore decision-making about the place of care during the COVID-19 pandemic and the impact on experience from the perspectives of carers and hospice staff caring for people at the end-of-life.

Abstracts from the 2022 European Association for Vision and Eye Research Festival, 13-15 October 2022, Valencia.

Purpose: Albinism refers to a group of genetic disorders typically characterized by a loss/reduction of melanin in the hair, skin and eyes of affected patients. Apart from pigment changes, all albinism patients present with foveal hypoplasia and optic nerve misrouting, and have blurred vision. The molecular mechanisms that link this lack of pigment with neural retinal development are poorly understood, with foveal and optic tract development being difficult to model.

The Experiences of Informal Carers during the COVID-19 Pandemic: A Qualitative Systematic Review.

Objectives: To identify, critically appraise and synthesise the qualitative literature on the experiences of informal carers of people with long-term conditions during the COVID-19 pandemic.

Design: A qualitative systematic literature review.

Data Sources: Eight electronic databases were systematically searched (Medline, Embase, CINAHL, PubMed, PsychINFO, Web of Science, Nursing and Allied Health and ASSIA) along with Google Scholar and handsearching via secondary sources.

The retinal pigmentation pathway in human albinism: Not so black and white.

Albinism is a pigment disorder affecting eye, skin and/or hair. Patients usually have decreased melanin in affected tissues and suffer from severe visual abnormalities, including foveal hypoplasia and chiasmal misrouting. Combining our data with those of the literature, we propose a single functional genetic retinal signalling pathway that includes all 22 currently known human albinism disease genes.

The Role of Small Molecules and Their Effect on the Molecular Mechanisms of Early Retinal Organoid Development.

Early embryonic retinal development is a well-documented and evolutionary conserved process. The specification towards eye development is temporally controlled by consecutive activation or inhibition of multiple key signaling pathways, such as the Wnt and hedgehog signaling pathways. Recently, with the use of retinal organoids, researchers aim to manipulate these pathways to achieve better human representative models for retinal development and disease.

An alternative approach to produce versatile retinal organoids with accelerated ganglion cell development.

Genetically complex ocular neuropathies, such as glaucoma, are a major cause of visual impairment worldwide. There is a growing need to generate suitable human representative in vitro and in vivo models, as there is no effective treatment available once damage has occured. Retinal organoids are increasingly being used for experimental gene therapy, stem cell replacement therapy and small molecule therapy.

A Systematic Review on Transplantation Studies of the Retinal Pigment Epithelium in Animal Models.

Unlabelled: The retinal pigment epithelium (RPE) and the adjacent light-sensitive photoreceptors form a single functional unit lining the back of the eye. Both cell layers are essential for normal vision. RPE degeneration is usually followed by photoreceptor degeneration and vice versa.