Vision Research最新文献_第7页

Modulation of alerting and orienting attention on spatial suppression 空间抑制下警觉和定向注意的调制

IF 1.4 4区心理学

Vision Research Pub Date : 2025-11-01 Epub Date: 2025-08-16 DOI: 10.1016/j.visres.2025.108676

Yu-Wan Zhao , Jing-Wen Xiang , Yong-Chun Cai

{"title":"Modulation of alerting and orienting attention on spatial suppression","authors":"Yu-Wan Zhao , Jing-Wen Xiang , Yong-Chun Cai","doi":"10.1016/j.visres.2025.108676","DOIUrl":"10.1016/j.visres.2025.108676","url":null,"abstract":"<div><div>Spatial suppression is a phenomenon in which, for high-contrast stimuli, larger stimuli typically elicit weaker neural responses and produce worse perceptual performance compared to smaller stimuli. This phenomenon is thought to arise from inhibitory connections between neurons. Although recent studies have suggested that feedback connections from high areas can influence these inhibitory processes, implying that attention may modulate spatial suppression, direct evidence for such modulation remains scarce. In particular, the impact of an important component of attention, alerting, has been overlooked. The present study aimed to explore the effects of two distinct components of attention—alerting and orienting—on spatial suppression. Our results indicate that alerting enhances spatial suppression. Furthermore, upon isolating the influence of orienting after controlling for alerting levels, we discovered that the influence of orienting on spatial suppression is feature-dependent. Specifically, while orienting attention to orientation enhances spatial suppression, orienting to contrast does not elicit the same effect. Our results indicate that spatial suppression is a flexible processing mechanism subject to widespread high-level cognitive modulations.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"236 ","pages":"Article 108676"},"PeriodicalIF":1.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The metrics of regressive saccades during reading in 13 written languages 13种书面语言阅读中倒退扫视的度量

IF 1.4 4区心理学

Vision Research Pub Date : 2025-11-01 Epub Date: 2025-08-22 DOI: 10.1016/j.visres.2025.108678

Laura Schwalm , Ralph Radach , Victor Kuperman

{"title":"The metrics of regressive saccades during reading in 13 written languages","authors":"Laura Schwalm , Ralph Radach , Victor Kuperman","doi":"10.1016/j.visres.2025.108678","DOIUrl":"10.1016/j.visres.2025.108678","url":null,"abstract":"<div><div>A well-documented phenomenon in research on eye movement control during reading is the systematic relationship between the landing positions of forward saccades and target word characteristics. However, the behaviour of regressive saccades, which move the eyes in the opposite direction, remains less explored. This study delves into the landing positions of regressive saccades, emphasizing the distinction between intra-word and inter-word regressions, across diverse languages. Using data from the MECO L1 project, which includes eye-tracking data from 589 participants across 13 languages, we scrutinize the precise landing positions of regressions vis-à-vis forward saccades. Our analysis shows a robust effect of launch distance on landing positions for progressive saccades, with undershoots increasing as launch distance grows and overshoots with shorter launch distances. In contrast, regressive inter-word saccades show only minimal variation in landing positions, typically landing near the centre of the target word regardless of launch distance or word length. Intra-word regressions, however, display a pattern similar to progressive saccades, where the landing position is influenced by launch distance, tending to overshoot the optimal viewing position as the launch site moves away from the word’s end. This pattern is consistent across all languages. These findings support the notion of cross-linguistic universality in oculomotor control mechanisms during reading, particularly the precision of regressive saccades. They align with the spatial coding hypothesis, suggesting that precise spatial memory of word positions guides regressive saccades.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"236 ","pages":"Article 108678"},"PeriodicalIF":1.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Motion upside-down: Response priming with inverted biological primes 运动颠倒：反应启动与倒置的生物启动

IF 1.4 4区心理学

Vision Research Pub Date : 2025-11-01 Epub Date: 2025-08-19 DOI: 10.1016/j.visres.2025.108669

David Eckert , Christina Bermeitinger

{"title":"Motion upside-down: Response priming with inverted biological primes","authors":"David Eckert , Christina Bermeitinger","doi":"10.1016/j.visres.2025.108669","DOIUrl":"10.1016/j.visres.2025.108669","url":null,"abstract":"<div><div>The ability to perceive and quickly process biological motion is a key aspect in human information processing that allows for rapid reactions. Previous research demonstrated a strong activation elicited by biological movements as primes in response priming. Research has shown that for biological stimuli in general, a change in orientation can strongly affect perception, information extraction, and attention shifting. However, it is unclear whether motor activation is subject to this influence. The response priming paradigm is a suitable tool in cognitive psychology to investigate motor preactivations in general. Here, two experiments investigate the behavioral priming effects of upside-down presented biological movements on static targets in different SOA-steps. We use two stimuli for biological movements: a dynamic point-light walker (Experiment 1) and a face with a dynamic gaze (Experiment 2). Both stimuli are compared to their upright versions. While with upright biological movements, we replicate strong PCEs in both experiments, an upside-down PLW led to significantly weaker PCEs, suggesting an attenuation of priming effects through inversion. Interestingly, a scrambled-dot condition led to sustained PCEs, suggesting possible preserved local motion trajectories. As to gaze primes, both an upright and an upside-down version produced equally strong PCEs with a decline at a longer SOA. Motor activation elicited by gaze movement direction is sustained and independent from orientation. Our findings show that inversion can affect motor activation in biological motion processing. This influence, however, depends on the nature of the stimulus.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"236 ","pages":"Article 108669"},"PeriodicalIF":1.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144865181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determining fixation accuracy with optical coherence tomography and its implication on visual acuity in amblyopia 光学相干断层扫描测定弱视的注视精度及其对视力的影响

IF 1.5 4区心理学

Vision Research Pub Date : 2025-10-01 Epub Date: 2025-07-09 DOI: 10.1016/j.visres.2025.108659

Maureen D Plaumann , Wei Wei, Teng Leng Ooi

{"title":"Determining fixation accuracy with optical coherence tomography and its implication on visual acuity in amblyopia","authors":"Maureen D Plaumann , Wei Wei, Teng Leng Ooi","doi":"10.1016/j.visres.2025.108659","DOIUrl":"10.1016/j.visres.2025.108659","url":null,"abstract":"<div><div>Inaccurate fixation is a hallmark of strabismus and amblyopia. Recently, positional error of fixation in amblyopic children was assessed with Optical Coherence Tomography (OCT). This study extends the use of OCT to examine both positional error and stability of fixation in an adult population and investigates how lifelong impairment of fixation can impact visual acuity in amblyopia. Twenty macular cube scans per eye were acquired with the Cirrus HD-OCT in 30 amblyopes and 30 controls with normal binocular vision. The foveal location was identified with the instrument’s software as line scan coordinates to determine the distance between the fovea and the center of the scan. The average positional error and stability of fixation were calculated utilizing the foveal location measurements. Crowded monocular distance visual acuity (VA) was obtained from each eye. Amblyopic eyes demonstrated greater position error and fixation instability compared to fellow and control eyes. Simple linear regressions revealed a significant relationship between both position error and VA and fixation stability and VA. However, with multiple regression, position error alone was the significant predictor of VA. Fixation accuracy analysis from OCT imaging provides a quantitative assessment of fixation behavior, allowing for more comprehensive clinical management of amblyopia and predicting visual acuity.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"235 ","pages":"Article 108659"},"PeriodicalIF":1.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlation between parameters estimated by the colour assessment and diagnosis and the Cambridge colour test in color discrimination evaluation 色彩评价诊断参数与剑桥色彩测验在色彩判别评价中的相关性

IF 1.5 4区心理学

Vision Research Pub Date : 2025-10-01 Epub Date: 2025-07-26 DOI: 10.1016/j.visres.2025.108664

Joycianne Rodrigues Parente , Eliza Maria da Costa Brito Lacerda , Dora Fix Ventura , Paulo Roney Kilpp Goulart , Natália B. Dutra , Givago Silva Souza , Letícia Miquilini

{"title":"Correlation between parameters estimated by the colour assessment and diagnosis and the Cambridge colour test in color discrimination evaluation","authors":"Joycianne Rodrigues Parente , Eliza Maria da Costa Brito Lacerda , Dora Fix Ventura , Paulo Roney Kilpp Goulart , Natália B. Dutra , Givago Silva Souza , Letícia Miquilini","doi":"10.1016/j.visres.2025.108664","DOIUrl":"10.1016/j.visres.2025.108664","url":null,"abstract":"<div><div>The Colour Assessment and Diagnosis (CAD) and the Cambridge Colour Test (CCT) are computerized psychophysical tests widely used in the diagnosis of color vision deficiencies due to their high specificity and sensitivity. However, these tests differ substantially in the type of visual task, stimulus configuration, vectors, luminance, background composition, and presentation time. This study aimed to compare the evaluation parameters estimated by these tests in trichromatic and dichromatic individuals. A total of sixty-six participants (40 trichromats and 38 dichromat individuals −16 protans and 22 deutans; mean age: 26.3 ± 8.9 years) were evaluated. Color discrimination thresholds were fitted to elliptical functions, and parameters such as ellipse area, rotation angle, and the size of protan, deutan, and tritan vectors were analyzed. Results showed equivalence between the tests for: the deutan and tritan vector areas and sizes in the trichromat subgroup; tritan vector area and size in the protan subgroup; and protan and tritan vector sizes in the deutan subgroup. Differences in the central coordinates of the CAD and CCT tests and the spatial arrangement of vectors in the CIE 1976 color space (specific to the CCT test) may have influenced the results. Nonetheless, agreement was observed in the measures of ellipse area, rotation angle, and sizes of the protan and tritan vectors between the two tests. These findings suggest that, despite methodological differences, the CAD and CCT tests produce largely comparable results and can be considered complementary tools in the assessment of color discrimination in clinical and research settings.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"235 ","pages":"Article 108664"},"PeriodicalIF":1.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visual functions in non-overlapping visual field defects: dichoptic experiments in healthy subjects with simulated scotomas 非重叠视野缺陷的视觉功能：模拟暗斑的健康受试者的二分实验

IF 1.4 4区心理学

Vision Research Pub Date : 2025-10-01 Epub Date: 2025-08-04 DOI: 10.1016/j.visres.2025.108666

Mehrdad Gazanchian , Frans W. Cornelissen , Nomdo M. Jansonius

{"title":"Visual functions in non-overlapping visual field defects: dichoptic experiments in healthy subjects with simulated scotomas","authors":"Mehrdad Gazanchian , Frans W. Cornelissen , Nomdo M. Jansonius","doi":"10.1016/j.visres.2025.108666","DOIUrl":"10.1016/j.visres.2025.108666","url":null,"abstract":"<div><div>In clinical care, glaucoma patients are often assumed to have normal vision as long as each point of visual space is seen normally by at least one eye. Recent studies have challenged this assumption. In glaucoma, visual perception of spatially fragmented binocular input may be altered by long-term neural adaptation and by acute sensory effects. These two components cannot be disentangled easily in glaucoma patients, but the latter component can be isolated with simulated visual field defects in healthy subjects. Therefore, the aim of this study was to find out if simulated non-overlapping visual field defects (NOVFDs) can hamper certain aspects of visual perception in healthy subjects. We included 10 healthy subjects in this cross-sectional, observational study. Subjects underwent psychophysical experiments targeting contrast sensitivity, motion perception (line motion and coherent dot motion), and shape recognition. Experiments were done in three different viewing conditions using a stereoscope: (1) binocularly, (2) with simulated NOVFDs, and (3) monocularly. The NOVFDs viewing condition resulted in a decreased performance across all tested aspects of visual perception, when compared to the binocular viewing condition. The NOVFDs viewing condition resulted in a poorer performance in shape recognition compared to the monocular viewing condition. No other differences were observed between these two viewing conditions. Our results show that simulated NOVFDs impair certain visual functions. This contributes to the basic understanding of visual perception in healthy subjects and acts as a first step in the understanding of the relationship between disease stage and the visual problems that glaucoma patients may experience.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"235 ","pages":"Article 108666"},"PeriodicalIF":1.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring afterimage appearance with the natural color system 探索后像外观与自然色彩系统

IF 1.4 4区心理学

Vision Research Pub Date : 2025-10-01 Epub Date: 2025-08-01 DOI: 10.1016/j.visres.2025.108665

Vincent C. Sun , Ching Wei Peng , Ming Chuan Fu

{"title":"Exploring afterimage appearance with the natural color system","authors":"Vincent C. Sun , Ching Wei Peng , Ming Chuan Fu","doi":"10.1016/j.visres.2025.108665","DOIUrl":"10.1016/j.visres.2025.108665","url":null,"abstract":"<div><div>A color afterimage is the perceived hue in the visual field when viewing a blank background after an inducing or adapting chromatic stimulus has been presented in that area for a certain duration. Color afterimage experiences are triggered by physical stimuli but persist even without such stimuli. It is a private perceptual experience, yet it remains a significant focus of scientific investigations. Research on color afterimages usually focuses on the appearance of these afterimages, and various methods for measuring their appearance have been developed. The present study employs direct appearance matching and an intuitive color appearance system to explore afterimage appearances effectively. The authors adopted the Natural Color System (NCS) as the reference system for measuring and representing the color appearance of afterimages. The inducing stimuli consisted of selected color patches with various hues and nuances (blackness and chromaticness) according to the NCS notations, while the induced afterimage hues were determined by matching the perceived afterimages to a color circle comprised of 40 patches. These 40 patches were chosen from the standard 40 NCS hues, all with the same nuance value in the initial phase. After establishing the hue for a given induced patch, a second-stage matching task utilized a set of patches with reduced chromaticness to achieve a nuance match. The collected data were used to construct a color afterimage map in the NCS color space, providing empirical guidelines about color afterimages and their inducing colors within a well-constructed color space.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"235 ","pages":"Article 108665"},"PeriodicalIF":1.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Binocular summation of pupil light reflex with different light stimulation in each eye 不同光刺激下双眼瞳孔光反射的总和

IF 1.4 4区心理学

Vision Research Pub Date : 2025-10-01 Epub Date: 2025-08-01 DOI: 10.1016/j.visres.2025.108667

Yuto Oshika , Ariki Sato , Shintaro Nakatani

{"title":"Binocular summation of pupil light reflex with different light stimulation in each eye","authors":"Yuto Oshika , Ariki Sato , Shintaro Nakatani","doi":"10.1016/j.visres.2025.108667","DOIUrl":"10.1016/j.visres.2025.108667","url":null,"abstract":"<div><div>Binocular summation of the pupil light reflex refers to the phenomenon where the pupillary constriction elicited by binocular light stimulation is greater than the expected response based on monocular stimulation. An increase in the total flux reaching the retina influences pupil constriction. Under binocular conditions, the combined light entering both eyes is greater than that under monocular conditions, which can affect the pupil’s response. However, previous research indicates that equal luminance presented either to one eye or distributed equally between the two eyes cannot adequately explain the effect of binocular summation. This study aimed to investigate how pupil constriction differs when the total illuminance stimulating the eyes remains constant, but the distribution of illuminance between the left and right eyes varies. Nine participants viewed a flickering target stimulus at 1 Hz. We compared the average pupillary constriction across various interocular illuminance ratios, including a monocular condition (only one eye exposed to the total illuminance) and binocular conditions where the total illuminance was divided unequally or equally between the two eyes. The results showed that when the total illuminance stimulating the eyes was constant, pupil constriction was significantly stronger as the illuminance distribution between the eyes approached equality (i.e., a ratio closer to one), with binocular conditions generally causing stronger average constriction than monocular conditions. Furthermore, analysis of the power spectrum density at 1 Hz revealed no significant difference between the tested illuminance conditions, suggesting that the phasic response was similar despite differences in tonic constriction.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"235 ","pages":"Article 108667"},"PeriodicalIF":1.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

What are the most salient visuoperceptual reading symptoms to identify visual stress in adults? Using exploratory factor analysis to develop the Ulster visual stress questionnaire 识别成人视觉压力最显著的视觉知觉阅读症状是什么？采用探索性因素分析方法编制阿尔斯特视觉压力问卷

IF 1.4 4区心理学

Vision Research Pub Date : 2025-10-01 Epub Date: 2025-08-02 DOI: 10.1016/j.visres.2025.108668

Darragh L. Harkin, Julie-Anne Little, Sara J. McCullough

{"title":"What are the most salient visuoperceptual reading symptoms to identify visual stress in adults? Using exploratory factor analysis to develop the Ulster visual stress questionnaire","authors":"Darragh L. Harkin, Julie-Anne Little, Sara J. McCullough","doi":"10.1016/j.visres.2025.108668","DOIUrl":"10.1016/j.visres.2025.108668","url":null,"abstract":"<div><div><em>Visual Stress (</em>VS<em>)</em> is a reading disorder characterised by visuoperceptual distortion symptoms experienced when reading. VS diagnosis is on an ad-hoc basis, with symptomology and diagnostic criteria poorly understood. This study investigated reading symptoms in adults to develop a clinically useful questionnaire for VS diagnosis. A comprehensive 17-item questionnaire was developed probing reading symptoms derived from the existing literature. 1248 undergraduate students (aged 18–50 years) completed the questionnaire and pattern glare test. 294 participants (23.6 %) exhibited pattern glare (scores > 3 on a mid-spatial frequency pattern glare test) which was used as an indirect measure of cortical hyperexcitation. After exclusion of diagnosed migraineurs, data from 247 participants were analysed. Parallel analysis determined the number of distinct factors and exploratory factor analysis assigned symptoms to these factors. To ensure symptoms mapped to a single factor, retained items needed to satisfy three conditions: (i) load onto their primary factor if >0.40, (ii) cross-load onto alternative factors by <0.30 and (iii) exhibit a difference in item primary factor and subsequent factor loadings of >0.20. Five factors were identified and mapped well to aetiological theories proposed to explain visual stress: 1) Magnocellular Pathway Deficits 2) Cortical Hyperexcitability 3) Eye Movement/Tracking Issues 4) Aversion to High Temporal Frequency ‘Flicker’ and 5) Concurrent Pathologies associated with Visual Stress. Post-hoc item analysis reduced questionnaire content to ten items. Exploratory factor analysis enabled systematic creation of a robust 10-item questionnaire to aid visual stress diagnosis. The questionnaire will be applied in a clinical context and among different ages for validation purposes.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"235 ","pages":"Article 108668"},"PeriodicalIF":1.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144756995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accommodative forces in aging human eye 老化人眼中的调节力

IF 1.5 4区心理学

Vision Research Pub Date : 2025-10-01 Epub Date: 2025-07-12 DOI: 10.1016/j.visres.2025.108657

Leyla Nur Turhal Çalışkan, Samet Çıklaçandır, Ömer Pars Kocaoğlu

{"title":"Accommodative forces in aging human eye","authors":"Leyla Nur Turhal Çalışkan, Samet Çıklaçandır, Ömer Pars Kocaoğlu","doi":"10.1016/j.visres.2025.108657","DOIUrl":"10.1016/j.visres.2025.108657","url":null,"abstract":"<div><div>Changes in the mechanical properties of the human crystalline lens over the years result in a loss of accommodation amplitude and eventually in presbyopia. While some material property changes of the aging human crystalline lens have been mapped, challenges remain in their in vivo characterization. Conflicting findings in the literature highlight the complexity of accurately defining lens biomechanics. Young’s modulus, anterior and posterior lens curvatures, lens thickness, and refractive index are examples of these well-studied properties. However, knowledge of forces applied to the crystalline lens for generating corresponding accommodative amplitudes has been limited to a few age groups. A full mapping of these accommodative forces over decades for the aging human eye remains incomplete. We used mechanical properties available in the literature to develop a mechanical model of the crystalline lens for age groups between 10 and 70 years. Then, finite element modeling and optical power calculations obtained from lens deformation during simulated accommodation were used to create a map of accommodative forces over the human lifespan. We found an S-curve-shaped decline in total equatorial forces required on the capsule to achieve reported accommodative amplitudes. This decline does not indicate increased lens compliance but reflects the possibility of age-related weakening of the applied force. The total force ranged from 0.5 N at age 10 to near zero at age 70, with a steep drop between ages 30 and 50.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"235 ","pages":"Article 108657"},"PeriodicalIF":1.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0