Biomaterial-based strategies for primary human corneal endothelial cells for therapeutic applications: from cell expansion to transplantable carrier.

The treatment of corneal blindness due to corneal diseases and injuries often requires the transplantation of healthy cadaveric corneal endothelial graft tissue to restore corneal clarity and visual function. However, the limited availability of donor corneas poses a significant challenge in meeting the demand for corneal transplantation. As a result, there is a growing interest in developing strategies alleviate this unmet need, and one of the postulated approaches is to isolate and expand primary human corneal endothelial cells (HCECs) for use in cell therapy.

Could the R2C2 Feedback and Coaching Model Enhance Feedback Literacy Behaviors: A Qualitative Study Exploring Learner-Preceptor Feedback Conversations.

Introduction: Feedback literacy (FBL) is a critical skill for learners encompassing four behaviors: appreciating feedback, making judgements, managing affect, and taking action. Little guidance has been available for clinical preceptors to promote FBL. The R2C2 feedback and coaching model that guides teachers through building Relationships, exploring Reactions and Reflections, discussing Content and Coaching to co-develop an action plan for follow-up may support FBL.

Timing of vitrectomy for treatment of endophthalmitis after intravitreal anti-VEGF injection: a systematic literature review of case reports and series.

Objective: To perform a systematic literature review analyzing visual outcomes of immediate, early, and delayed vitrectomy in the treatment of acute endophthalmitis after intravitreal anti-vascular endothelial growth factor (anti-VEGF) injections.

Methods: We conducted a literature search using the Ovid Medline, Embase.com, and Web of Science databases, and relevant articles were selected from original English papers published from 2005 to 2021.

Deep anterior chamber depth may be a risk factor for axial length growth in children.

Objective: To investigate and evaluate the progression of myopia and associated factors of axial length (AL) growth among children in Chongqing.

Methods: This six-month prospective study was conducted on students in grades 1 to 8 at a school in Chongqing, China. All participants underwent a standard ophthalmologic examination including uncorrected visual acuity (UCVA), noncycloplegic refraction, AL, and corneal topography in March 2023.

De novo and inherited dominant variants in U4 and U6 snRNAs cause retinitis pigmentosa.

The U4 small nuclear RNA (snRNA) forms a duplex with the U6 snRNA and, together with U5 and ~30 proteins, is part of the U4/U6.U5 tri-snRNP complex, located at the core of the major spliceosome. Recently, recurrent variants in the U4 RNA, transcribed from the gene, and in at least two other genes were discovered to cause neurodevelopmental disorder.

Decoding Gene Networks Controlling Hypothalamic and Prethalamic Neuron Development.

Neuronal subtypes derived from the embryonic hypothalamus and prethalamus regulate many essential physiological processes, yet the gene regulatory networks controlling their development remain poorly understood. Using single-cell RNA- and ATAC-sequencing, we analyzed mouse hypothalamic and prethalamic development from embryonic day 11 to postnatal day 8, profiling 660,000 cells in total. This identified key transcriptional and chromatin dynamics driving regionalization, neurogenesis, and differentiation.

Integration of Transplanted Interneurons Over a New Period of Ocular Dominance Plasticity in Adult Visual Cortex.

Cortical interneurons play an important role in mediating the juvenile critical period for ocular dominance plasticity in the mouse primary visual cortex. Previously, we showed that transplantation of cortical interneurons derived from the medial ganglionic eminence (MGE) opens a robust period of ocular dominance plasticity 33-35 days after transplantation into neonatal host visual cortex. The plasticity can be induced by transplanting either PV or SST MGE-derived cortical interneurons; it requires transplanted interneurons to express the vesicular GABAergic transporter; and it is manifested by changes to the host visual circuit.

Eye metrics are a marker of visual conscious awareness and neural processing in cerebral blindness.

Damage to the primary visual pathway can cause vision loss. Some cerebrally blind people retain degraded vision or sensations and can perform visually guided behaviors. These cases motivate investigation and debate on blind field conscious awareness and linked residual neural processing.

Low-concentration atropine (0.01%) on quantitative contrast sensitivity function in Chinese children with myopia.

Aim: To investigate the effect of 0.01% low-concentration atropine (LA) on quantitative contrast sensitivity function (qCSF) in children with myopia.

Methods: This paired case-control study included 90 eyes of 58 children who were sex-, age-, and refraction-matched and equally divided into two groups: the 0.

Update to the PRISMA guidelines for network meta-analyses and scoping reviews and development of guidelines for rapid reviews: a scoping review protocol.

Objective: The objective of this scoping review is to develop a list of items for potential inclusion in the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) reporting guidelines for network meta-analysis (NMA), scoping reviews (ScRs), and rapid reviews (RRs).

Introduction: The PRISMA extensions for NMA and ScRs were published in 2015 and 2018. However, since then, their methodologies and innovations, including automation, have evolved.

LDHAα, a lactate dehydrogenase A isoform, promotes glycolysis and tumor progression.

Lactate dehydrogenase A (LDHA) is upregulated in multiple cancer types and contributes to the Warburg effect. Several studies have found that many tumor-related genes have subtypes and play important roles in promoting cancer development. Here, we identified a novel LDHA transcript, which produced a new protein 3 kDa larger than LDHA, which we named LDHAα.

Ocular Manifestations of Immune Reconstitution Inflammatory Syndrome in HIV after Highly Active Antiretroviral Therapy: Clinical Use of CD8+ T cell.

Purpose: To investigate ocular manifestation of immune reconstitution inflammatory syndrome (IRIS) in human immunodeficiency virus (HIV) patients after starting highly active antiretroviral therapy (HAART) and its relationship to T cell immunity.

Methods: HIV patients with ocular IRIS after HAART were retrospectively reviewed. Clinical presentations with previous opportunistic infection, duration from initiation of HAART to IRIS, blood CD4+, CD8+ T cell count, and HIV RNA copies before HAART and at IRIS were analyzed.

Abstracts from the 2024 European Association for Vision and Eye Research Congress, 3-5 November 2024, Valencia.

Aims/purpose: This study aims to assess whether changes in intraocular pressure (IOP) occur after a blood draw and quantify these changes' magnitude in a group of patients over 60 years old.

Methods: We analysed data from the right eye of 54 subjects, with a mean ( SD) age of 68 4 years. The measurements were conducted in the morning while fasting.

Insights into the effects of subretinal voretigene neparvovec-rzyl in RPE65-associated Leber congenital amaurosis: an 18-Month report.

Objective: Assess safety and effectiveness of subretinal gene replacement therapy at 18 months post treatment.

Design: Retrospective, longitudinal study conducted at the Hospital for Sick Children in Toronto, Canada.

Participants: Patients with bi-allelic RPE65 variants, early onset retinal degeneration, and residual viable retina who underwent voretigene neparvovec r-zyl gene replacement therapy.

A prospective self-controlled study on the alterations of the ocular surface and conjunctival transcriptomic profile associated with prolonged exposure to video display terminals.

Purpose: To assess the impact of prolonged and intense exposure to video display terminals (VDTs) on ocular surface homeostasis.

Methods: 30 subjects limited daily VDT usage to less than 3 h for one week, then extended usage to more than 8 h/day for the next three weeks. Ocular symptoms and signs were evaluated weekly using the Ocular Surface Disease Index (OSDI) questionnaire and clinical examinations.

Prevalence of dry eye disease in Spain: A population-based survey (PrevEOS).

Purpose: To determine the countrywide prevalence of dry eye disease (DED) at the population level in Spain, and associated risks.

Methods: This was a cross-sectional study based on a telephone survey conducted in 2022. Participants from the general population were selected by sex, age, region, and population of residence to ensure the representativeness of the Spanish population.

Pediatric blepharokeratoconjunctivitis: A challenging ocular surface disease.

Pediatric blepharokeratoconjunctivitis (PBKC) is a chronic and recurrent ocular surface inflammatory disorder affecting children in early life. It is frequently under- or late- diagnosed, representing a potential cause of severe visual morbidity worldwide. An expert panel consensus recently agreed on its definition and proposed diagnostic criteria for suspected and definitive PBKC to reduce confusion and avoid varied terminology previously used in the literature, improving early and precise diagnosis.

Virtual Human Retina: Simulating Neural Signalling, Degeneration, and Responses to Electrical Stimulation.

Introduction: Current brain-based visual prostheses pose significant challenges impeding adoption such as the necessarily complex surgeries and occurrence of more substantial side effects due to the sensitivity of the brain. This has led to much effort toward vision restoration being focused on the more approachable part of the brain - the retina. Here we introduce a novel, parameterized simulation platform that enables study of human retinal degeneration and optimization of stimulation strategies.

Ca3.3 T-type Calcium Channels Contribute to Carboplatin Resistance in Retinoblastoma.

Carboplatin resistance in retinoblastoma, an aggressive pediatric intraocular tumor, remains a major clinical challenge in treatment. This study elucidates the role of T-type calcium channels in carboplatin resistance using human retinoblastoma Y79 cells. We generated carboplatin-resistant Y79 (Y79CR) cells and characterized their electrophysiological properties.

Prevalence and risk factors for the development of chronic postoperative pain after cataract surgery in the Age-related Eye Disease Study (AREDS).

Chronic ocular pain impacts quality of life and is often linked to ocular surgery. We assessed the prevalence of chronic postoperative pain (CPOP) after cataract surgery and associated risk factors using a secondary cohort post-hoc analysis of data from the Age-Related Eye Disease Study (AREDS), a multicenter, controlled, randomized clinical trial of antioxidant vitamins and minerals. Ocular pain was determined from item 4 of the National Eye Institute Visual Function Questionnaire (NEI-VFQ-25), administered between 1997 and 2005.

ENHANCED RESTORATION OF VISUAL CODE AFTER TARGETING ON BIPOLAR CELLS COMPARED TO RETINAL GANGLION CELLS WITH OPTOGENETIC THERAPY.

Optogenetic therapy is a promising vision restoration method where light sensitive opsins are introduced to the surviving inner retina following photoreceptor degeneration. The cell type targeted for opsin expression will likely influence the quality of restored vision. However, a like-for-like pre-clinical comparison of visual responses evoked following equivalent opsin expression in the two major targets, ON bipolar (ON BCs) or retinal ganglion cells (RGCs), is absent.

Characterisation of the ocular inflammatory response to AAV reveals divergence by sex and age.

Progress for ocular AAV gene therapy has been hindered by AAV-induced inflammation, limiting dose escalation and long-term efficacy. Broadly, the extent of inflammatory responses alters with age and sex, yet these factors are poorly represented in pre-clinical development of ocular AAV gene therapies. Here, we combined clinical imaging, flow cytometry and bulk-sequencing of sorted microglia to interrogate the longitudinal inflammatory response following intravitreal delivery of AAV2 in young (3-month), middle aged (9-month) and old (18-month) Cx3cr1-creER:R26tdTomato+/- mice of both sexes.

Herpes zoster ophthalmicus with acute retrobulbar optic neuritis and abducens nerve palsy: a case report.

Herpes zoster Ophthalmicus (HZO) affecting the ophthalmic division (V1) of the trigeminal nerve. HZO may cause extraocular muscle palsies, with the third nerve being the most commonly affected and the fourth nerve the least. The combined involvement of the optic nerve and isolated paralysis of the eye muscle is very rare, with only limited case reports documenting this complication of ocular herpes zoster.

Stretch-induced endogenous electric fields drive directed collective cell migration in vivo.

Directed collective cell migration is essential for morphogenesis, and chemical, electrical, mechanical and topological features have been shown to guide cell migration in vitro. Here we provide in vivo evidence showing that endogenous electric fields drive the directed collective cell migration of an embryonic stem cell population-the cephalic neural crest of Xenopus laevis. We demonstrate that the voltage-sensitive phosphatase 1 is a key component of the molecular mechanism, enabling neural crest cells to specifically transduce electric fields into a directional cue in vivo.

Choroidal thickness under pilocarpine versus cyclopentolate.

Bruch´s membrane (BM) is firmly connected posteriorly to the optic nerve head through the peripapillary choroidal border tissue, and anteriorly through the longitudinal ciliary muscle to the scleral spur. We assessed, whether a difference in the contractile state of the ciliary muscle influences the position of the posterior BM by lifting the posterior BM pole, i.e.