Age-related differences in eye movements and the association with Archimedes spiral tracing performance in young and older adults.

Age-related hand motor impairments may critically depend on visual information though few studies have examined eye movements during tasks of hand function in older adults. The purpose of this study was to assess eye movements and their association with performance while tracing on a touchscreen in young and older adults. Eye movements of 21 young (age 20-38 years; 12 females, 9 males) and 20 older (65-85 years; 10 females, 10 males) adults were recorded while performing an Archimedes spiral tracing task, a common clinical assessment sensitive to age-associated impairments in hand function.

A Novel Rabbit Model of Meibomian Gland Dysfunction-Induced Dry Eye.

Purpose: The objective of this three-phase study was to develop a model of mild to moderate evaporative dry eye to be used to evaluate tear film stability endpoints during product development.

Methods: Rabbits were sedated prior to ophthalmic cautery of meibomian gland orifices. The orifices of eyelid meibomian glands were half-cauterized (to yield obstruction of every other meibomian gland orifices), fully cauterized (to yield obstruction of all meibomian gland orifices), or untreated.

Ocular Safety and Toxicology of Subretinal Gene Therapy With rAAV.hPDE6A in Nonhuman Primates.

Purpose: Reports of gene therapy-associated retinal atrophies and inflammation have highlighted the importance of preclinical safety assessments of adeno-associated virus (AAV) vector systems. We evaluated in nonhuman primates (NHPs) the ocular safety and toxicology of a novel AAV gene therapy targeting retinitis pigmentosa caused by mutations in PDE6A, which has since been used in a phase I/II clinical trial (NCT04611503).

Methods: A total of 34 healthy cynomolgus animals (Macaca fascicularis) were treated with subretinal injections of rAAV.

Oculomotor challenges in macular degeneration impact motion extrapolation.

Macular degeneration (MD), which affects the central visual field including the fovea, has a profound impact on acuity and oculomotor control. We used a motion extrapolation task to investigate the contribution of various factors that potentially impact motion estimation, including the transient disappearance of the target into the scotoma, increased position uncertainty associated with eccentric target positions, and increased oculomotor noise due to the use of a non-foveal locus for fixation and for eye movements. Observers performed a perceptual baseball task where they judged whether the target would intersect or miss a rectangular region (the plate).

Enantiomer-Dependent Supramolecular Antibacterial Therapy for Drug-Resistant Bacterial Keratitis.

Bacteria have the potential to exhibit divergent stereochemical preferences for different levels of chiral structures, including from molecule, supramolecule, to nanomicroscale helical structure. Accordingly, the structure-activity relationship between chirality and bactericidal activity remains uncertain. In this study, we seek to understand the multivalent molecular chirality effect of chiral supramolecular polymers on antibacterial activity.

Performance of Optic Disc Optical Coherence Tomography Normative Database in a Large, Diverse, Real-World Cohort.

Precis: Current optical coherence tomography normative sample data may not represent diverse human optic nerve anatomy to accurately classify all individuals with true glaucomatous optic neuropathy.

Purpose: To compare optic nerve head (ONH) measurements between published values from an optical coherence tomography (OCT) normative database and a more diverse cohort of healthy individuals.

Patients And Methods: ONH parameters from healthy participants of the Michigan Screening and Intervention for Glaucoma and Eye Health through Telemedicine (MI-SIGHT) program and the Topcon Maestro-1 normative cohort were compared.

The eyes have it: Alcohol-induced eye movement impairment and perceived impairment in older adults with and without alcohol use disorder.

Background: While alcohol has been shown to impair eye movements in young adults, little is known about alcohol-induced oculomotor impairment in older adults with longer histories of alcohol use. Here, we examined whether older adults with chronic alcohol use disorder (AUD) exhibit more acute tolerance than age-matched light drinkers (LD), evidenced by less alcohol-induced oculomotor impairment and perceived impairment.

Method: Two random-order, double-blinded laboratory sessions with administration of alcohol (0.

Laterality and performance in elite male golfers.

Human beings display laterilised behaviour. In sport, including golf, players adopt a right- or left-handed stance. There may be advantages in going against convention in the position of the dominant hand relative to golf stance.

Ocular injuries by less-lethal weapon: a view from Switzerland.

Dear Editor-in-chief: Thank you for focussing on this troubling subject in your issue 1/2024. It confirms that many of the difficulties involved are similar worldwide. Countries that use less-lethal weapons include Switzerland, the only Western European democracy besides France to employ multiple kinetic impact projectiles.

Acceptability and Preliminary Effects of Intensive Brief Trauma-Focused PTSD Treatment for Refugees.

Background: Post-Traumatic Stress Disorder (PTSD) is a significant mental health concern in refugee populations exposed to trauma and displacement. Traditional treatments for PTSD often involve lengthy interventions. However, there's a growing interest in exploring more condensed, intensive treatments to improve outcomes and accessibility for refugees.

Characterization of Optokinetic Nystagmus in Healthy Participants With a Novel Oculography Device.

Objective: To develop a proof-of-concept smart-phone-based eye-tracking algorithm to assess non-pathologic optokinetic (OKN) nystagmus in healthy participants. Current videonystagmography (VNG) is typically restricted to in-office use, and advances in portable vestibular diagnostics would yield immense public health benefits.

Study Design: Prospective cohort study.

Sleep spindles and slow oscillations predict cognition and biomarkers of neurodegeneration in mild to moderate Alzheimer's disease.

Introduction: Changes in sleep physiology can predate cognitive symptoms by decades in persons with Alzheimer's disease (AD), but it remains unclear which sleep characteristics predict cognitive and neurodegenerative changes after AD onset.

Methods: Using data from a prospective cohort of mild to moderate AD (n = 60), we analyzed non-rapid eye movement sleep spindles and slow oscillations (SOs) at baseline and their associations with baseline amyloid beta (Aβ) and tau and with cognition from baseline to 3-year follow-up.

Results: Higher spindle and SO activity predicted significant changes in Aβ and tau at baseline, lower Alzheimer's Disease Assessment Scale Cognitive Subscale (better cognitive performance) score, and higher Mini-Mental State Examination score from baseline to 36 months.

Histidine Tags in Human Recombinant Alpha B-Crystallin (HSPB5) Proteins Are Detrimental for Zinc Binding Studies.

The stability of α-crystallin, the major protein of the mammalian eye lens and a molecular chaperone, is one of the most crucial factors for its survival and function. The chaperone-like activity and stability of α-crystallin dramatically increased in the presence of Zn. Each subunit of α-crystallin could bind multiple zinc atoms through inter-subunit bridging and cause enhanced stability.

Retinal oculomics and risk of incident aortic aneurysm and aortic adverse events: a population-based cohort study.

Background: The asymptomatic onset and extremely high mortality rate of aortic aneurysm (AA) highlight the urgency of early detection and timely intervention. The alteration of retinal vascular features (RVFs) can reflect the systemic vascular properties, and be widely used as the biomarker for cardiovascular disease risk prediction. Therefore, we aimed to investigate associations of RVFs with AA and its progression.

Recognizing drivers' sleep onset by detecting slow eye movement using a parallel multimodal one-dimensional convolutional neural network.

Slow eye movements (SEMs) are a reliable physiological marker of drivers' sleep onset, often accompanied by EEG alpha wave attenuation. A parallel multimodal 1D convolutional neural network (PM-1D-CNN) model is proposed to classify SEMs. The model uses two parallel 1D-CNN blocks to extract features from EOG and EEG signals, which are then fused and fed into fully connected layers for classification.

A rare case of culture-negative infective endocarditis following cataract surgery.

A 70-year-old man developed intermittent fever with chills, severe anorexia, generalized weakness, and mild exertional difficulty in breathing following posterior chamber intraocular lens replacement surgery for a mature white cataract in the left eye. Laboratory tests revealed persistent negative blood cultures, normocytic and normochromic anemia, neutrophilia, and elevated inflammatory markers despite multiple courses of antibiotics. All other investigations conducted to identify the cause of prolonged fever, including transthoracic echocardiography, were negative.

Computational approaches to apply the String Edit Algorithm to create accurate visual scan paths.

Eye movement detection algorithms (e.g., I-VT) require the selection of thresholds to identify eye fixations and saccadic movements from gaze data.

An Eye-Tracking-Based Investigation on the Principle of Closure in Logo Design.

This study employs subjective evaluation and eye movement experiments to explore the application and conveyance of logo graphics design, which conforms to the Gestalt principle of closure, to understand the psychological process of this principle in the perception of a logo. The study found that there is no significant difference between completely enclosed logos and unenclosed ones that conform to the principle of closure in their influence on sightline behavior due to the effects of closure, but the subjective evaluation favors unenclosed logos as more attractive and comfortable to perceive, which agrees with modern logo design trends. In addition, the sightline distribution of the image-type logos is more scattered and has the most extended fixation duration.

Reading comics: The effect of expertise on eye movements.

The theory of expertise suggests that there should be observable differences in the eye movement patterns between experts and non-experts. Previous studies have investigated how expertise influences eye movement patterns during cognitive tasks like reading. However, the impact of expertise on eye movements in comics, a multimodal form of text, remains unexplored.

Eye Movement and Recall of Visual Elements in Eco-friendly Product.

This study aims to explore the distribution of visual attention on sustainability graphics when viewing an eco-friendly product and the recall of sustainability information afterward. Twenty-five students majoring in environmental studies and twenty-five students from non-environmental majors participated in the study. They were further divided into a higher group and a lower group based on their sustainability level.

Relationship Between Ocular Motility and Motor Skills.

The primary aim of this descriptive cross-sectional study was to examine the relationship between ocular motility and motor skills in school-age children. Participants included 142 schoolchildren (mean age: 7.08 ± 0.

Examining the Time to Diagnosis in Idiopathic Intracranial Hypertension Presentations in a Specialist Eye Emergency Department.

Idiopathic intracranial hypertension (IIH) is a neurological disorder characterized by chronic headaches, cognitive difficulties, reduced quality of life, and rarely irreversible visual loss. Community diagnosis is often challenging due to unfamiliarity with current guidelines and a lack of clinical experience, leading to misdiagnosis and treatment delays, which can negatively impact visual recovery and quality of life. Our study examined the time to diagnosis and investigated the barriers to timely diagnosis in adults with newly diagnosed IIH.

Acute transient choroidal elevation induced by hyperpermeability of asymmetrical pachyvessel over-crossed watershed zone.

Purpose: To describe a case of an elderly woman who presented with acute choroidal elevation, and the elevation disappeared without any treatment a month after the onset.

Observation: A 64-year-old woman presented to the clinic with complaint of blurred vision in her left eye. Her left visual acuity was 20/32 and choroidal elevation in the macular and subretinal fluid of the left eye was observed with optical coherence tomography (OCT), and no abnormalities in her right eye.

Serous retinal detachment secondary to bilateral choroidal osteoma successfully treated with subscleral sclerectomy: A case report.

Purpose: To report a case of bilateral choroidal osteoma successfully treated with subscleral sclerectomy for secondary serous retinal detachment (SRD).

Observations: A 52-year-old Japanese woman first diagnosed with Vogt-Koyanagi-Harada disease and treated with steroids for 9 years was referred to our clinic. SRD in both eyes recurred frequently and was uncontrolled with adalimumab subcutaneous injections and oral cyclosporine, in addition to steroids.

Ocular surface disease related to tisotumab vedotin-tftv.

Introduction: To report a series of patients who developed ocular surface disease related to tisotumab vedotin-tftv (TV), an antibody-drug conjugate (ADC) approved for the treatment of recurrent or metastatic cervical cancer.

Methods: This was a multicenter retrospective chart review study of patients who developed ocular surface disease related to TV between April 1st, 2022 to August 31st, 2023.

Results: Five patients were identified who developed ocular surface disease while on TV.