Depth of focus as a function of spherical aberration using adaptive optics in pseudophakic subjects.

Purpose: To measure visual acuity at three different defocus planes in pseudophakic subjects with varying levels of spherical aberration induced by an adaptive optics visual simulator. The study aimed to simulate Extended Depth of Focus (EDOF) intraocular lenses (IOLs).

Setting: Private hospital (IMO, Barcelona, Spain).

Zonulopathies as Genetic Disorders of the Extracellular Matrix.

The zonular fibres are formed primarily of fibrillin-1, a large extracellular matrix (ECM) glycoprotein, and also contain other constituents such as LTBP-2, ADAMTSL6, MFAP-2 and EMILIN-1, amongst others. They are critical for sight, holding the crystalline lens in place and being necessary for accommodation. Zonulopathies refer to conditions in which there is a lack or disruption of zonular support to the lens and may clinically be manifested as ectopia lens (EL)-defined as subluxation of the lens outside of the pupillary plane or frank displacement (dislocation) into the vitreous or anterior segment.

Impact of COVID-19 and recovery of routine diabetic retinopathy digital screening across different regions in England: an analysis of publicly available data.

Objective: This study aims to examine the reduction and subsequent recovery of routine digital screening (RDS) uptake in England from 2018 to 2022, exploring national, regional and individual Diabetic Eye Screening Programme (DESP) levels. The COVID-19 lockdown in most areas of England was from 26 March 2020 to 23 June 2020 (first national lockdown), 5 November 2020 to 2 December 2020 (second national lockdown) and 6 January 2021 to 8 March 2021 (third national lockdown).

Design: Retrospective data analysis.

Principles governing the effects of sensory loss on human abilities: An integrative review.

Blindness or deafness can significantly influence sensory abilities in intact modalities, affecting communication, orientation and navigation. Explanations for why certain abilities are enhanced and others degraded include: crossmodal cortical reorganization enhances abilities by providing additional neural processing resources; and sensory processing is impaired for tasks where calibration from the normally intact sense is required for good performance. However, these explanations are often specific to tasks or modalities, not accounting for why task-dependent enhancement or degradation are observed.

STABLE trial of spectacle provision and driving safety among myopic motorcycle users in Vietnam: study protocol for a stepped-wedge, cluster randomised trial.

Background: Traffic crashes are the leading cause of death globally for people aged 5-29 years, with 90% of mortality occurring in low- and middle-income countries (LMICs). The STABLE (Slashing Two-wheeled Accidents by Leveraging Eyecare) trial was designed to determine whether providing spectacles could reduce risk among young myopic motorcycle users in Vietnam.

Methods: This investigator-masked, stepped-wedge, cluster randomised naturalistic driving trial will recruit 625 students aged 18-23 years, driving ≥ 50 km/week, with ≥ 1-year driving experience and using motorcycles as their primary means of transport, in 25 clusters of 25 students in Ho Chi Minh City, Vietnam.

Customised 96-ocular TaqMan (iCAM) microarray PCR card for rapid diagnosis of microbial keratitis.

Aim: To validate the diagnostic performance of a custom 96-micro-organism TaqMan PCR card (iCAM) for microbial keratitis (MK) from a single corneal epithelial sample.

Methods: Patients over the age of 18 referred to Cambridge University Hospital with MK were recruited in this single-site prospective cohort study between September 2021 and January 2023. An ocular-specific, customised microarray card (iCAM) was constructed according to primer and probe nucleotide sequences developed in our department to detect bacteria, viruses, and fungi commonly implicated in MK using a single corneal epithelial sample.

The missing pieces: an investigation into the parallels between Charles Bonnet, phantom limb and tinnitus syndromes.

Charles Bonnet syndrome (CBS) is a condition characterised by visual hallucinations of varying complexity on a background of vision loss. CBS research has gained popularity only in recent decades, despite evidence dating back to 1760. Knowledge of CBS among both the patient and professional populations unfortunately remains poor, and little is known of its underlying pathophysiology.

Cognitive behavioural therapy versus other interventions on mental health in people with sensory impairments: A systematic review and meta-analysis.

Background: Sensory impairments can negatively affect people's quality of life and daily functioning, including anxiety and depression symptoms. Cognitive behavioural therapy (CBT) could be an effective intervention to alleviate these, however its effectiveness compared to other interventions have not been examined. The aim of this review was to examine the effectiveness of CBT versus other interventions on anxiety and depression symptoms in people with hearing, visual, and other sensory impairments.

Impact of edentulism on community-dwelling adults in low-income, middle-income and high-income countries: a systematic review.

Objectives: This study aims to comprehensively explore the consequences of edentulism on community-dwelling adults in low-income, middle-income and high-income countries.

Design: Systematic review and Synthesis Without Meta-Analysis (SWiM).

Data Sources: MEDLINE, Embase, Scopus, Web of Science and the Cochrane Central Register of Controlled Trials (CENTRAL) were searched from inception to 21 March 2023, in addition to grey literature searches, reference cross-checking and study recommendations.

Investigating the prevalence and associated factors of depression, anxiety, and loneliness among people with type-2 diabetes in Bangladesh: a community-based study.

Diabetes mellitus is a major worldwide health concern. Diabetes has been associated with a number of adverse mental health conditions including depression, anxiety, and loneliness that can negatively impact diabetes outcomes. This study aimed to investigate factors associated with depression, anxiety, and loneliness in people, in the community, suffering with diabetes in Bangladesh.

Multicenter Normative Data for Mesopic Microperimetry.

Purpose: The purpose of this study was to provide a large, multi-center normative dataset for the Macular Integrity Assessment (MAIA) microperimeter and compare the goodness-of-fit and prediction interval calibration-error for a panel of hill-of-vision models.

Methods: Microperimetry examinations of healthy eyes from five independent study groups and one previously available dataset were included (1137 tests from 531 eyes of 432 participants [223 women and 209 men]). Linear mixed models (LMMs) were fitted to the data to obtain interpretable hill-of-vision models.

Neurochemistry and functional connectivity in the brain of people with Charles Bonnet syndrome.

Background: Charles Bonnet syndrome (CBS) is a condition in which people with vision loss experience complex visual hallucinations. These complex visual hallucinations may be caused by increased excitability in the visual cortex that are present in some people with vision loss but not others.

Objectives: We aimed to evaluate the association between γ-aminobutyric acid (GABA) in the visual cortex and CBS.

Exploring Scotopic Microperimetry as an Outcome Measure in Choroideremia.

Purpose: Choroideremia is an X-linked outer retinal degeneration. Early symptoms include nyctalopia and progressive visual field loss, but visual acuity is preserved until late disease stages. Dark-adapted two-color fundus-controlled perimetry (also known as scotopic microperimetry) has been developed to enable spatial assessment of rod and cone photoreceptor function.

Measuring X-Chromosome inactivation skew for X-linked diseases with adaptive nanopore sequencing.

X-linked genetic disorders typically affect females less severely than males owing to the presence of a second X Chromosome not carrying the deleterious variant. However, the phenotypic expression in females is highly variable, which may be explained by an allelic skew in X-Chromosome inactivation. Accurate measurement of X inactivation skew is crucial to understand and predict disease phenotype in carrier females, with prediction especially relevant for degenerative conditions.

Longitudinal assessment of female carriers of choroideremia using multimodal retinal imaging.

Background/aims: Female choroideremia carriers present with a spectrum of disease severity. Unlike in men, the rate of disease progression has not been well characterised in carriers. This longitudinal study aimed to determine the rate of retinal degeneration in choroideremia carriers, using multimodal imaging and microperimetry.

Factors Affecting Global Adherence for the Uptake of Diabetic Retinopathy Screening: A Systematic Review and Meta-Analysis.

Purpose: To evaluate diabetic retinopathy (DR) screening global adherence rate and the association between sociodemographic and clinical variables and adherence rates to DR screening in individuals with diabetes.

Design: Systematic review and meta-analysis.

Methods: This systematic review was registered with International Prospective Register of Systematic Reviews (ID: CRD42024507035).

Investigating the impact of asymmetric macular sensitivity on visual acuity chart reading in choroideremia.

Introduction: Degeneration in choroideremia, unlike typical centripetal photoreceptor degenerations, is centred temporal to the fovea. Once the fovea is affected, the nasal visual field (temporal retina) is relatively spared, and the preferred retinal locus shifts temporally. Therefore, when reading left to right, only the right eye reads into a scotoma.