Extended depth-of-focus (EDOF) AcrySof® IQ Vivity® intraocular lens implant: a real-life experience

Graefe s Archive for Clinical and Experimental Ophthalmology, Journal Year: 2021, Volume and Issue: 259(9), P. 2717 - 2722

Published: May 29, 2021

Language: Английский

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Publication guidelines and recommendations for pupillary measurement in psychophysiological studies

Psychophysiology, Journal Year: 2022, Volume and Issue: 59(4)

Published: March 22, 2022

A variety of psychological and physical phenomena elicit variations in the diameter pupil eye. Changes size are mediated by relative activation sphincter pupillae muscle (decrease diameter) dilator (increase diameter), innervated parasympathetic sympathetic branches, respectively, autonomic nervous system. The current guidelines intended to inform guide psychophysiological research involving measurement (1) summarizing important aspects concerning physiology pupil, (2) providing methodological data-analytic recommendations, (3) briefly reviewing that modulate pupillary reactivity. Because increased ease tractability measurement, goal these is promote accurate recording, analysis, reporting data research.

Language: Английский

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Utility of Pupillary Light Reflex Metrics as a Physiologic Biomarker for Adolescent Sport-Related Concussion

JAMA Ophthalmology, Journal Year: 2020, Volume and Issue: 138(11), P. 1135 - 1135

Published: Sept. 24, 2020

Importance

Concussion diagnosis remains clinical, without objective diagnostic tests available for adolescents. Known deficits in visual accommodation and autonomic function after concussion make the pupillary light reflex (PLR) a promising target as an physiological biomarker concussion.

Objective

To determine potential utility of PLR metrics biomarkers

Design, Setting, Participants

Prospective cohort adolescent athletes between ages 12 18 years recruited August 1, 2017, December 31, 2018. The study took place at specialty program private suburban high school included healthy control individuals (n = 134) with sport-related (SRC) 98). Analysis was completed June 30, 2020.

Exposures

Sports-related pupillometry assessments.

Main Outcomes Measures

Pupillary (maximum minimum diameter, peak average constriction/dilation velocity, percentage constriction, time to 75% redilation [T75]).

Results

134 98 were obtained median 12.0 days following injury (interquartile range [IQR], 5.0-18.0 days). Eight 9 significantly greater among Bonferroni correction pupil diameter: 4.83 mm vs 4.01 mm; difference, 0.82; 99.44% CI, 0.53-1.11; 2.96 2.63 0.33; 99.4% 0.18-0.48; constriction: 38.23% 33.66%; 4.57; 2.60-6.55; constriction velocity: 3.08 mm/s 2.50 mm/s; 0.58; 0.36-0.81; 4.88 3.91 0.97; 0.63-1.31; dilation 1.32 1.22 0.10; 0.00-0.20; 1.83 1.64 0.19; 0.07-0.32; T75: 1.81 seconds 1.51 seconds; 0.30; 0.10-0.51). In exploratory analyses, sex-based differences observed, girls exhibiting longer T75 (1.96 1.63 0.02-0.65). Among individuals, diminished (eg, smaller maximum size 3.81 4.22 −0.41; −0.77 0.05) observed exercise.

Conclusions Relevance

These findings suggest that enhancement characterize acute concussion, while exercise produced sizes overall slowing metrics, presumably associated fatigue. Quantifiable measures may serve future physiologic athlete.

Language: Английский

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Assessing Saccadic Eye Movements With Head-Mounted Display Virtual Reality Technology

Frontiers in Psychiatry, Journal Year: 2020, Volume and Issue: 11

Published: Sept. 17, 2020

As our society is ageing globally, neurodegenerative disorders are becoming a relevant issue. Assessment of saccadic eye movement could provide objective values to help understand the symptoms disorders. HTC Corporation launched new virtual reality (VR) headset, VIVE Pro Eye, implementing an infrared-based tracking technique together with VR technology. The purpose this study evaluate whether device can be used as assessment tool and investigate technical features tracking. We developed measurement system simple environment on Unity design platform, following internationally proposed standard saccade protocol. then measured 7 healthy young adults analyse oculo-metrics latency, peak velocity, error rate pro- anti-saccade tasks: 120 trials in each task. calculated these parameters based detection algorithm that we have previous studies. Consequently, results revealed latency 220.40 ± 43.16 ms, velocity 357.90 111.99 ◦/s, 0.24 0.41 % for pro-saccade task, 343.35 76.42 318.79 116.69 0.66 0.76 In addition, observed pupil diameter 4.30 1.15 mm (left eye) 4.29 1.08 (right 4.21 1.04 4.22 0.97 Comparing between descriptive statistics studies suggests Eye function since range or close Nonetheless, found limitations especially about time-related parameters. Further improvements software hardware protocol, more measurements diverse age-groups people different health conditions warranted enhance whole movement.

Language: Английский

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SoundLock: A Novel User Authentication Scheme for VR Devices Using Auditory-Pupillary Response

Published: Jan. 1, 2023

Virtual Reality (VR) has shown promising potential in many applications, such as e-business, healthcare, and social networking.Rich information regarding users' activities online accounts is stored VR devices.If they are carelessly unattended, adversarial access will cause data breaches other critical consequences.Practical user authentication schemes for devices dire need.Current solutions, including passwords, digital PINs, pattern locks, mostly follow conventional approaches general personal devices.They have been criticized deficits both security usability.In this work, we propose SoundLock, a novel scheme using auditory-pupillary response biometrics.During authentication, auditory stimuli presented to the via headset.The corresponding pupillary captured by integrated eye tracker.User's legitimacy then determined comparing with template generated during enrollment stage.To strike balance between usability design, an optimization problem formulated.Due its nonlinearity, two-stage heuristic algorithm proposed solve it efficiently.The solution provides necessary guidance selecting effective determining their lengths.We demonstrate through extensive in-field experiments that SoundLock outperforms state-of-the-art biometric solutions FAR (FRR) low 0.76% (0.91%) well received among participants study.

Language: Английский

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Pupillometry as an Objective Measure of Sustained Attention in Young and Older Listeners

Trends in Hearing, Journal Year: 2019, Volume and Issue: 23

Published: Jan. 1, 2019

The ability to sustain attention on a task-relevant sound source while avoiding distraction from concurrent sounds is fundamental listening in crowded environments. We aimed (a) devise an experimental paradigm with which this aspect of can be isolated and (b) evaluate the applicability pupillometry as objective measure sustained young older populations. designed that continuously measured behavioral responses during 25-s trials. Stimuli contained number concurrent, spectrally distinct tone streams. On each trial, participants detected gaps one streams resisting others. Behavior demonstrated increasing difficulty time-on-task number/proximity distractor In listeners (N = 20; aged 18 35 years), pupil diameter (on group individual level) was dynamically modulated by instantaneous task difficulty: Periods where performance revealed strain were accompanied increased diameter. Only trials performed successfully included analysis so observed effects reflect demands opposed failure attend. line existing reports, we global changes dynamics 19; 63 79 years) including decreased diameter, limited dilation range, reduced temporal variability. However, despite these changes, showed similar attentive tracking those listeners. Overall, our results demonstrate reliable time-sensitive over long durations both (with caveats)

Language: Английский

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The effects of transcutaneous auricular vagal nerve stimulation on pupil size

Clinical Neurophysiology, Journal Year: 2021, Volume and Issue: 132(8), P. 1859 - 1865

Published: June 9, 2021

Language: Английский

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Systemic effect of sympathectomy in the treatment of localized hyperhidrosis

Updates in Surgery, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Abstract Hyperhidrosis is thought to result from excessive stimulation of sweat glands due increased sympathetic activity; however, data on systemic responses following bilateral thoracic sympathectomy as the definitive treatment have not yet been sufficiently evaluated. This study, designed a prospective cohort investigation, included 24 patients who underwent for palmar and axillary hyperhidrosis at our center in 2023, along with an age-matched control group equal size. In group, pupillometry measurements were performed 1 day before surgery 7th postoperative day, while corresponding intervals. Data analyzed both preoperatively postoperatively compared group. According Disease Severity Scale, all had severe hyperhidrosis. Sympathectomy was T3 level 9 T4 levels 15 patients. The satisfaction rate recorded 95.8%. No statistically significant differences observed between preoperative those However, when comparing within favoring parasympathetic activity noted latency contractions photopic low values ( p = 0.016 0.038, respectively). Our study one pioneering works objectively demonstrate, through quantitative method, that enhances system response ocular region.

Language: Английский

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Influence of Strategic Cortical Infarctions on Pupillary Function

Frontiers in Neurology, Journal Year: 2018, Volume and Issue: 9

Published: Oct. 29, 2018

Objective: Cortical activity, including cognitive and emotional processes, may influence pupillary function. The exact pathways the site of cortical innervation remain elusive, however. We investigated effects select strokes, i.e. ischemic infarcts affecting insular cortex prefrontal eye field, on Methods: Seventy-four patients with acute stroke, consecutively admitted to our institution from March July 2018, were assessed 24 h after endovascular recanalization therapy (i.e., day 2 stroke), using automated pupillometry. Stroke location volume clinical severity (estimated by Alberta Program Early CT Score National Institute Health Scale) recorded. excluded posterior circulation intracranial pathology other than midline shift computed tomography exceeding 5 millimeters or a history disease. Pupillometry data 25 neurologically normal myocardial infarction acquired for control. Results: Fifty stroke thrombectomy included analysis. Twenty-five (50%) had field involvement (group 1, strategic infarcts); located in cerebral areas 2, infarcts). light reflex, as measured constriction velocity maximal/minimal diameters, was within physiological limits all patients, controls. However, while size velocities correlated subjects, correlation dilatation absent right-hemispheric (left hemisphere infarcts, group 1 (r2 = 0.15, p 0.04), 0.41, 0.0007); right 0.008, 0.69); 0.12, 0.08); controls 0.29, ≤ 0.0001). Conclusions: insula do not impair reflex humans. subtle changes occur when pupils dilate back baseline, probably due autonomic dysfunction. Replication is needed explore possible hemispheric lateralization. suggest that serve research model study lesions

Language: Английский

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Pupillary dynamics in diabetic and nondiabetic patients following uneventful phacoemulsification

Clinical and Experimental Optometry, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 7

Published: Jan. 26, 2025

Clinical relevance Although laser refractive surgeries and multifocal intraocular lens implantation are generally avoided in patients with diabetic retinopathy, a substantial proportion of well-glycaemic-controlled type 2 diabetes mellitus considered for these procedures. Pupil dynamics play significant role determining postoperative satisfaction patients.

Language: Английский

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