125327 20241125101202.0 doi 10.3390/life13030773 sideral 132981 ART-2023-132981 eng Orduna-Hospital, Elvira Universidad de Zaragoza (orcid)0000-0003-2710-1875 Eye-tracker study of the developmental eye movement test in young people without binocular dysfunctions 2023 Access copy available to the general public Unrestricted Background: The purpose of this study was to evaluate ocular motility in normal young adults when performing the Developmental Eye Movement (DEM) test using an infrared eye-tracker in a sample of young subjects without visual dysfunctions. Methods: An optometric evaluation was carried out on 52 participants with a mean age of 21.00 ± 3.22 years to verify they did not have any binocular dysfunction, by completing a computerized version of the DEM test while their eye movements were recorded with an eye-tracker. A custom-written software was developed to analyse some specific parameters of ocular motility while performing each subtest (Test A, Test B and Test C) of the complete DEM test. Results: The mean duration of the fixations was shorter in Test C (243.56 ± 46.18 s) than in Test A (493.52 ± 171.41 s) and Test B (484.20 ± 156.59 s). The mean adjusted horizontal (AdjHT: 35.24 ± 6.68 s) and vertical (VT: 33.58 ± 5.56 s) times were at the 45th and at the 40th percentile, respectively. In Test C, there was a high positive significant correlation between the saccadic speed (cc: 0.77; p < 0.001) and the saccadic length (cc: 0.74; p < 0.001) of both eyes. Conclusions: The eye-tracker is an objective method to evaluate the DEM test in subjects without binocular dysfunctions, measuring and quantifying ocular motility parameters that are impossible with the traditional subjective method. The eye movements of both eyes are conjugated in each subject, having saccades of the same length and speed. info:eu-repo/grantAgreement/ES/DGA/LMP39_21 info:eu-repo/grantAgreement/ES/MICINN/PID2019-107058RB-I00 info:eu-repo/grantAgreement/ES/UZ/JIUZ-2021-CIE-03 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.2 2023 BIOLOGY 26 / 109 = 0.239 2023 Q1 T1 0.713 2023 Paleontology 2023 Q1 Space and Planetary Science 2023 Q2 Biochemistry, Genetics and Molecular Biology (miscellaneous) 2023 Q2 Ecology, Evolution, Behavior and Systematics 2023 Q2 4.3 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Navarro-Marqués, Aitana López-de-la-Fuente, Carmen Universidad de Zaragoza (orcid)0000-0002-7471-5362 Sanchez-Cano, Ana Universidad de Zaragoza (orcid)0000-0002-5621-1937 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 13, 3 (2023), 773 [13 pp.] Life (Basel) Life 2075-1729 3250291 http://zaguan.unizar.es/record/125327/files/texto_completo.pdf Versión publicada 2725260 http://zaguan.unizar.es/record/125327/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:125327 articulos driver 2024-11-22-12:12:19 ARTICLE