{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T23:37:40Z","timestamp":1784763460107,"version":"3.55.0"},"reference-count":72,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T00:00:00Z","timestamp":1770076800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JEMR"],"abstract":"<jats:p>The purpose of the study was to analyze, characterize, and compare the measurements of saccades that occurred during the positive and negative fusional vergence test (PFV and NFV, respectively) as a function of the disparity vergence demand. Thirty-four participants\u2019 PFV and NFV amplitudes were measured in a haploscopic setup, recording eye movements with an Eyelink 1000 Plus (SR Research). The visual stimulus was a column of letters. Break and recovery points were determined objectively offline, and saccades were detected with a velocity-threshold-based method. A total of 13,103 and 14,381 saccades were detected during the measurement of the PFV and NFV ranges, respectively. Saccades followed the main sequence (\u03c1 = 0.97, p &lt; 0.001). The distributions of saccadic amplitudes during PFV and NFV differed significantly (U = 4.28, p &lt; 0.001). The amplitude of saccades that occurred while fusion was maintained (median (IQR) 0.73 (0.92) deg) was significantly smaller than that of saccades during diplopia (2.10 (3.90) deg) (U = \u221275.63, p &lt; 0.001). The distributions of saccade direction during the measurement of PFV and NFV amplitudes were statistically significantly different (p &lt; 0.01). These findings contribute to a better understanding of how the visual system adjusts saccades in response to different disparity vergence demand during fusional vergence amplitudes evaluation.<\/jats:p>","DOI":"10.3390\/jemr19010015","type":"journal-article","created":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T12:46:11Z","timestamp":1770122771000},"page":"15","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Analysis of Saccade Characteristics During Fusional Vergence Tests in Normal Binocular Vision Participants"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9765-1691","authenticated-orcid":false,"given":"Cristina","family":"Rovira-Gay","sequence":"first","affiliation":[{"name":"Centre for Sensors, Instruments, and Systems Development (CD6), Universitat Polit\u00e8cnica de Catalunya-BarcelonaTech (UPC), 08222 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0053-550X","authenticated-orcid":false,"given":"Clara","family":"Mestre","sequence":"additional","affiliation":[{"name":"Centre for Sensors, Instruments, and Systems Development (CD6), Universitat Polit\u00e8cnica de Catalunya-BarcelonaTech (UPC), 08222 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5474-9832","authenticated-orcid":false,"given":"Marc","family":"Argil\u00e9s","sequence":"additional","affiliation":[{"name":"Centre for Sensors, Instruments, and Systems Development (CD6), Universitat Polit\u00e8cnica de Catalunya-BarcelonaTech (UPC), 08222 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaume","family":"Pujol","sequence":"additional","affiliation":[{"name":"Centre for Sensors, Instruments, and Systems Development (CD6), Universitat Polit\u00e8cnica de Catalunya-BarcelonaTech (UPC), 08222 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,3]]},"reference":[{"key":"ref_1","unstructured":"Scheiman, M.M., and Wick, B. (2014). Clinical Management of Binocular Vision. Heterophoric, Accommodative, and Eye Movement Disorders, Lippincott Williams & Wilkins."},{"key":"ref_2","first-page":"895803","article-title":"Characterization of Visual Symptomatology Associated with Refractive, Accommodative, and Binocular Anomalies","volume":"2015","year":"2015","journal-title":"J. Ophthalmol."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Howard, I.P. (2012). Vergence Eye Movements. Perceiving in Depth: Volume 1 Basic Mechanisms, Oxford University Press.","DOI":"10.1093\/acprof:oso\/9780199764143.003.0299"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Stidwill, D., and Fletcher, R. (2011). Eye Movements. Normal Binocular Vision, Blackwell Publising.","DOI":"10.1002\/9781118788684"},{"key":"ref_5","unstructured":"Elliott, B.D. (2007). Assessment of Binocular Vision. Clinical Procedures in Primary Eye Care, Butterworth Heinemann Elsevier."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"628","DOI":"10.1097\/00006324-198208000-00002","article-title":"Normalization of Prism Bar Vergences","volume":"59","author":"Wesson","year":"1982","journal-title":"Am. J. Optom. Physiol. Opt."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1007\/s10792-016-0248-x","article-title":"The Effect of Convergence and Divergence Stress on near Stereoacuity","volume":"37","author":"Kucukceran","year":"2017","journal-title":"Int. Ophthalmol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1080\/01658107.2016.1217028","article-title":"Vergence Neural Pathways: A Systematic Narrative Literature Review","volume":"40","author":"Searle","year":"2016","journal-title":"Neuroophthalmology"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1167\/16.1.7","article-title":"Disparity Vergence Responses before versus after Repetitive Vergence Therapy in Binocularly Normal Controls","volume":"16","author":"Talasan","year":"2016","journal-title":"J. Vis."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1173","DOI":"10.1111\/opo.13528","article-title":"Objective Evaluation of Fusional Vergence after a Vision Therapy Protocol in Typical Binocular Vision","volume":"45","author":"Argiles","year":"2025","journal-title":"Ophthalmic Physiol. Opt."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"E583","DOI":"10.1097\/01.opx.0000171331.36871.2f","article-title":"A Randomized Clinical Trial of Vision Therapy\/Orthoptics versus Pencil Pushups for the Treatment of Convergence Insufficiency in Young Adults","volume":"82","author":"Scheiman","year":"2005","journal-title":"Optom. Vis. Sci."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"230","DOI":"10.1080\/2576117X.2022.2095192","article-title":"Evaluation and Management of Divergence Insufficiency-Type Esotropia","volume":"72","author":"Holmes","year":"2022","journal-title":"J. Binocul. Vis. Ocul. Motil."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"475","DOI":"10.1111\/j.1475-1313.2008.00583.x","article-title":"Repeatability and Agreement in the Measurement of Horizontal Fusional Vergences","volume":"28","author":"Antona","year":"2008","journal-title":"Ophthalmic Physiol. Opt."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1097\/00006324-198906000-00007","article-title":"Comparison of Fusional Ranges Measured by Risley Prisms, Vectograms, and Computer Orthopter","volume":"66","author":"Feldman","year":"1989","journal-title":"Optom. Vis. Sci."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"254","DOI":"10.1097\/00006324-200204000-00012","article-title":"Reliability of Binocular Vision Measurements Used in the Classification of Convergence Insufficiency","volume":"79","author":"Rouse","year":"2002","journal-title":"Optom. Vis. Sci."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"48","DOI":"10.3109\/09273971003758412","article-title":"Fusional Vergence Measures and Their Significance in Clinical Assessment","volume":"18","author":"Rowe","year":"2010","journal-title":"Strabismus"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"3271269","DOI":"10.1155\/2018\/3271269","article-title":"Quantitative Approach for the Analysis of Fusional Convergence Using Eye-Tracking and SacLab Toolbox","volume":"2018","author":"Cercenelli","year":"2018","journal-title":"J. Healthc. Eng."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Rovira-Gay, C., Mestre, C., Argiles, M., Vinuela-Navarro, V., and Pujol, J. (2023). Feasibility of Measuring Fusional Vergence Amplitudes Objectively. PLoS ONE, 18.","DOI":"10.1371\/journal.pone.0284552"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1097\/OPX.0000000000001320","article-title":"Objective Assessment of Disparity Vergence after Treatment of Symptomatic Convergence Insufficiency in Children","volume":"96","author":"Scheiman","year":"2019","journal-title":"Optom. Vis. Sci."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Otero-Millan, J., Macknik, S.L., and Martinez-Conde, S. (2014). Fixational Eye Movements and Binocular Vision. Front. Integr. Neurosci., 8.","DOI":"10.3389\/fnint.2014.00052"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1016\/j.visres.2021.06.001","article-title":"Characteristics of Saccades during the near Point of Convergence Test","volume":"187","author":"Mestre","year":"2021","journal-title":"Vis. Res."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"521","DOI":"10.1007\/s00417-007-0714-2","article-title":"Saccades during Symmetrical Vergence","volume":"246","author":"Coubard","year":"2008","journal-title":"Graefe\u2019s Arch. Clin. Exp. Ophthalmol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1038\/nrn1348","article-title":"The Role of Fixational Eye Movements in Visual Perception","volume":"5","author":"Macknik","year":"2004","journal-title":"Nat. Rev. Neurosci."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/S0079-6123(06)54008-7","article-title":"Fixational Eye Movements in Normal and Pathological Vision","volume":"Volume 154","author":"Macknik","year":"2006","journal-title":"Progress in Brain Research"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1167\/8.14.21","article-title":"Saccades and Microsaccades during Visual Fixation, Exploration, and Search: Foundations for a Common Saccadic Generator","volume":"8","author":"Troncoso","year":"2008","journal-title":"J. Vis."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1354","DOI":"10.1111\/opo.13384","article-title":"Does the Subjective Response during the Measurement of Fusional Reserves Affect the Clinical Diagnosis?","volume":"44","author":"Mestre","year":"2024","journal-title":"Ophthalmic Physiol. Opt."},{"key":"ref_27","first-page":"7","article-title":"Objective Assessment of Vergence and Accommodation After Vision Therapy for Convergence Insufficiency in a Child: A Case Report","volume":"2","author":"Scheiman","year":"2014","journal-title":"Optom. Vis. Sci."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"74","DOI":"10.1097\/OPX.0000000000000936","article-title":"Objective Assessment of Vergence after Treatment of Concussion-Related CI: A Pilot Study","volume":"94","author":"Scheiman","year":"2017","journal-title":"Optom. Vis. Sci."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1","DOI":"10.16910\/jemr.12.4.6","article-title":"Changes in the Disparity Vergence Main Sequence after Treatment of Symptomatic Convergence Insufficiency in Children","volume":"12","author":"Scheiman","year":"2019","journal-title":"J. Eye Mov. Res."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1097\/OPX.0000000000001626","article-title":"Negative Fusional Vergence Is Abnormal in Children with Symptomatic Convergence Insufficiency","volume":"98","author":"Scheiman","year":"2021","journal-title":"Optom. Vis. Sci."},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Alvarez, T.L. (2015). A Pilot Study of Disparity Vergence and Near Dissociated Phoria in Convergence Insufficiency Patients Before vs. After Vergence Therapy. Front. Hum. Neurosci., 9.","DOI":"10.3389\/fnhum.2015.00419"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"4122","DOI":"10.1167\/iovs.13-11797","article-title":"Analysis of Saccades and Peak Velocity to Symmetrical Convergence Stimuli: Binocularly Normal Controls Compared to Convergence Insufficiency Patients","volume":"54","author":"Alvarez","year":"2013","journal-title":"Investig. Ophthalmol. Vis. Sci."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1845","DOI":"10.1016\/j.visres.2011.06.014","article-title":"Changes in Vergence Dynamics Due to Repetition","volume":"51","author":"Jainta","year":"2011","journal-title":"Vis. Res."},{"key":"ref_34","first-page":"2939","article-title":"The Latency of Saccades, Vergence, and Combined Eye Movements in Children and in Adults","volume":"43","author":"Yang","year":"2002","journal-title":"Investig. Ophthalmol. Vis. Sci."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1035","DOI":"10.1016\/S0042-6989(03)00084-1","article-title":"Microsaccades Uncover the Orientation of Covert Attention","volume":"43","author":"Engbert","year":"2003","journal-title":"Vis. Res."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"7192","DOI":"10.1073\/pnas.0509557103","article-title":"Microsaccades Are Triggered by Low Retinal Image Slip","volume":"103","author":"Engbert","year":"2006","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"188","DOI":"10.3758\/BRM.42.1.188","article-title":"An Adaptive Algorithm for Fixation, Saccade, and Glissade Detection in Eyetracking Data","volume":"42","author":"Holmqvist","year":"2010","journal-title":"Behav. Res. Methods"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1167\/14.2.18","article-title":"Unsupervised Clustering Method to Detect Microsaccades","volume":"14","author":"Castro","year":"2014","journal-title":"J. Vis."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1016\/j.optom.2023.04.002","article-title":"Impact of Strabismus and Binocular Dysfunctions in the Developmental Eye Movement Test and Test of Visual Perception Skills: A Multicentric and Retrospective Study","volume":"16","author":"Gispets","year":"2023","journal-title":"J. Optom."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Convergence Insufficiency Treatment Trial Investigator Group (2008). The Convergence Insufficiency Treatment Trial: Design, Methods, and Baseline Data. Ophthalmic Epidemiol., 15, 24\u201336.","DOI":"10.1080\/09286580701772037"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"433","DOI":"10.1163\/156856897X00357","article-title":"The Psychophysics Toolbox","volume":"10","author":"Brainard","year":"1997","journal-title":"Spat. Vis."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"437","DOI":"10.1163\/156856897X00366","article-title":"The VideoToolbox Software for Visual Psychophysics: Transforming Numbers into Movies","volume":"10","author":"Pelli","year":"1997","journal-title":"Spat. Vis."},{"key":"ref_43","first-page":"1","article-title":"What\u2019s New in Psychtoolbox-3?","volume":"36","author":"Kleiner","year":"2007","journal-title":"Perception"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"41","DOI":"10.3368\/aoj.63.1.41","article-title":"Fusional Amplitudes: Exploring Where Fusion Falters","volume":"63","author":"Fray","year":"2013","journal-title":"Am. Orthopt. J."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1097\/00006324-199504000-00001","article-title":"Vergence Adaptation and the Order of Clinical Vergence Range Testing","volume":"72","author":"Rosenfield","year":"1995","journal-title":"Optom. Vis. Sci."},{"key":"ref_46","first-page":"1","article-title":"CircStat: A MATLAB Toolbox for Circular Statistics","volume":"31","author":"Philipp","year":"2009","journal-title":"J. Stat. Softw."},{"key":"ref_47","unstructured":"Agostinelli, C., and Lund, U. (R Package: Circular Statistics, 2017). R Package: Circular Statistics, Version 0.4-3."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"1197","DOI":"10.1016\/S0042-6989(97)00271-X","article-title":"Convergence and Divergence Exhibit Different Response Characteristics to Symmetric Stimuli","volume":"37","author":"Hung","year":"1997","journal-title":"Vis. Res."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1795","DOI":"10.1016\/j.visres.2009.04.015","article-title":"The Influence of Vergence Adaptation on Open-Loop Vergence Dynamics","volume":"49","author":"Satgunam","year":"2009","journal-title":"Vis. Res."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/j.visres.2012.04.013","article-title":"The Frequency of Horizontal Saccades in near and Far Symmetrical Disparity Vergence","volume":"63","author":"Kim","year":"2012","journal-title":"Vis. Res."},{"key":"ref_51","first-page":"1","article-title":"Review: Behaviors, Models, and Clinical Applications of Vergence Eye Movements","volume":"30","author":"Chen","year":"2010","journal-title":"J. Med. Biol. Eng."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"618","DOI":"10.1097\/00006324-198009000-00013","article-title":"Fixation of Disparity: A Steady State Error of Disparity-Induced Vergence","volume":"57","author":"Schor","year":"1980","journal-title":"Am. J. Optom. Physiol. Opt."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"3089","DOI":"10.1016\/S0042-6989(00)00162-0","article-title":"The Influence of Repetitive Eye Movements on Vergence Performance","volume":"40","author":"Yuan","year":"2000","journal-title":"Vis. Res."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1016\/0014-4886(75)90225-3","article-title":"Overlapping Saccades and Glissades Are Produced by Fatigue in the Saccadic Eye Movement System","volume":"48","author":"Bahill","year":"1975","journal-title":"Exp. Neurol."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1167\/17.5.4","article-title":"Asymmetries between Convergence and Divergence Reveal Tonic Vergence Is Dependent upon Phasic Vergence Function","volume":"17","author":"Erkelens","year":"2017","journal-title":"J. Vis."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"1624","DOI":"10.1152\/jn.1992.68.5.1624","article-title":"Saccade-Vergence Interactions in Humans","volume":"68","author":"Zee","year":"1992","journal-title":"J. Neurophysiol."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1136\/bjo.72.3.162","article-title":"Disordered Vergence Control in Dyslexic Children","volume":"72","author":"Stein","year":"1988","journal-title":"Br. J. Ophthalmol."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"433","DOI":"10.1038\/eye.1987.66","article-title":"Fine Binocular Control in Dyslexic Children","volume":"1","author":"Stein","year":"1987","journal-title":"Eye"},{"key":"ref_59","doi-asserted-by":"crossref","unstructured":"Bucci, M.P., Nassibi, N., Gerard, C.-L., Bui-Quoc, E., and Seassau, M. (2012). Immaturity of the Oculomotor Saccade and Vergence Interaction in Dyslexic Children: Evidence from a Reading and Visual Search Study. PLoS ONE, 7.","DOI":"10.1371\/journal.pone.0033458"},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"E985","DOI":"10.1097\/OPX.0b013e3181fef1aa","article-title":"Vision Therapy in Adults with Convergence Insufficiency: Clinical and Functional Magnetic Resonance Imaging Measures","volume":"87","author":"Alvarez","year":"2010","journal-title":"Optom. Vis. Sci."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"3936","DOI":"10.1364\/BOE.489037","article-title":"Eye Movements in Patients with Post-COVID Condition","volume":"14","author":"Goset","year":"2023","journal-title":"Biomed. Opt. Express"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"1697","DOI":"10.1007\/s10072-020-04310-y","article-title":"Eye Tracking Metrics to Screen and Assess Cognitive Impairment in Patients with Neurological Disorders","volume":"41","author":"Tao","year":"2020","journal-title":"Neurol. Sci."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1001\/jamaophthalmol.2015.4486","article-title":"Variability of Ocular Deviation in Strabismus","volume":"134","author":"Economides","year":"2016","journal-title":"JAMA Ophthalmol."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"914","DOI":"10.1167\/iovs.16-20727","article-title":"Effects of Reduced Acuity and Stereo Acuity on Saccades and Reaching Movements in Adults with Amblyopia and Strabismus","volume":"58","author":"Goltz","year":"2017","journal-title":"Investig. Ophthalmol. Vis. Sci."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"22116","DOI":"10.1038\/s41598-020-79089-1","article-title":"Differential Diagnosis of Vergence and Saccade Disorders in Dyslexia","volume":"10","author":"Ward","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"125","DOI":"10.14196\/mjiri.31.125","article-title":"Oculomotor Rehabilitation in Children with Dyslexia","volume":"31","author":"Jafarlou","year":"2017","journal-title":"Med. J. Islam. Repub. Iran."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"442","DOI":"10.1097\/WNO.0000000000001422","article-title":"Effects of Parkinson Disease on Blur-Driven and Disparity-Driven Vergence Eye Movements","volume":"41","author":"Gupta","year":"2021","journal-title":"J. Neuro-Ophthalmol."},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"1677","DOI":"10.1016\/0042-6989(92)90160-K","article-title":"The Conjugacy of Human Saccadic Eye Movements","volume":"32","author":"Bains","year":"1992","journal-title":"Vis. Res."},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"586","DOI":"10.1097\/00006324-198009000-00009","article-title":"Unequal Saccades during Vergence","volume":"57","author":"Kenyon","year":"1980","journal-title":"Optom. Vis. Sci."},{"key":"ref_70","first-page":"441","article-title":"Ocular Vergence under Natural Conditions. II. Gaze Shifts between Real Targets Differing in Distance and Direction","volume":"236","author":"Erkelens","year":"1989","journal-title":"Proc. R. Soc. B Biol. Sci."},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"1772","DOI":"10.1152\/jn.00621.2001","article-title":"Quantitative Analysis of Catch-up Saccades during Sustained Pursuit","volume":"87","author":"Missal","year":"2002","journal-title":"J. Neurophysiol."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"293","DOI":"10.1016\/j.optom.2021.12.001","article-title":"Extent of Foveal Fixation with Eye Rotation in Emmetropes and Myopes","volume":"15","author":"Abdullah","year":"2022","journal-title":"J. Optom."}],"container-title":["Journal of Eye Movement Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1995-8692\/19\/1\/15\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T05:21:12Z","timestamp":1770268872000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1995-8692\/19\/1\/15"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,3]]},"references-count":72,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026,2]]}},"alternative-id":["jemr19010015"],"URL":"https:\/\/doi.org\/10.3390\/jemr19010015","relation":{},"ISSN":["1995-8692"],"issn-type":[{"value":"1995-8692","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,3]]}}}