{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T17:42:47Z","timestamp":1791999767835,"version":"4.4.0"},"reference-count":76,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,2,5]],"date-time":"2020-02-05T00:00:00Z","timestamp":1580860800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100011596","name":"Conselleria d'Educaci\u00f3, Investigaci\u00f3, Cultura i Esport","doi-asserted-by":"publisher","award":["GV\/2017\/187"],"award-info":[{"award-number":["GV\/2017\/187"]}],"id":[{"id":"10.13039\/501100011596","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>This cross-sectional study estimated computer vision syndrome (CVS) prevalence and analysed its relationship with video display terminal (VDT) exposure, as well as sociodemographic, refractive, environmental, and ergonomic characteristics in 109 presbyopic VDT workers wearing progressive addition lenses (PALs). Usual spectacles were measured with a lens analyser, and subjective refraction was performed by an optometrist. CVS was measured with the CVS-Q\u00a9. VDT exposure was collected. Ergonomic evaluations were conducted in a normal working posture looking at the screen. Air temperature and relative humidity were measured (thermohygrometer), and illumination was measured (luxmeter). Descriptive analysis and differences in CVS prevalence, as a function of the explanatory variables, were performed (chi-square test). Multivariate logistic regression was used to identify factors associated with CVS (OR and 95% CI). The mean age was 54.0 \u00b1 4.8 years, and 43.1% were women. The mean hours of VDT use at work was 6.5 \u00b1 1.3 hours\/day. The prevalence of CVS was 74.3%. CVS was significantly associated with women (OR 3.40; 95% CI, 1.12\u201310.33), non-neutral neck posture (OR 3.27; 95% CI, 1.03\u201310.41) and altered workplace lighting (OR 3.64; 95% CI, 1.22\u201310.81). Providing training and information to workers regarding the importance of adequate lighting and ergonomic postures during VDT use is advised to decrease CVS and increase workplace quality of life.<\/jats:p>","DOI":"10.3390\/ijerph17031003","type":"journal-article","created":{"date-parts":[[2020,2,6]],"date-time":"2020-02-06T02:59:18Z","timestamp":1580957958000},"page":"1003","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":71,"title":["Prevalence of Computer Vision Syndrome and Its Relationship with Ergonomic and Individual Factors in Presbyopic VDT Workers Using Progressive Addition Lenses"],"prefix":"10.3390","volume":"17","author":[{"given":"Mar","family":"S\u00e1nchez-Brau","sequence":"first","affiliation":[{"name":"Doctoral Programme in Health Sciences, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9771-7336","authenticated-orcid":false,"given":"Bego\u00f1a","family":"Domenech-Amigot","sequence":"additional","affiliation":[{"name":"Department of Optics, Pharmacology and Anatomy, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain"},{"name":"University Institute of Physics Applied to Sciences and Technologies, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1802-8760","authenticated-orcid":false,"given":"Francisco","family":"Brocal-Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"University Institute of Physics Applied to Sciences and Technologies, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain"},{"name":"Department of Physics, Systems Engineering and Signal Theory, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose Antonio","family":"Quesada-Rico","sequence":"additional","affiliation":[{"name":"Department of Clinical Medicine, University Miguel Hern\u00e1ndez, 03550 San Juan de Alicante, Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar","family":"Segu\u00ed-Crespo","sequence":"additional","affiliation":[{"name":"Department of Optics, Pharmacology and Anatomy, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain"},{"name":"Public Health Research Group, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,5]]},"reference":[{"key":"ref_1","unstructured":"Eurofound (2019, December 20). Sixth European Working Conditions Survey. Available online: https:\/\/www.eurofound.europa.eu\/sites\/default\/files\/ef_publication\/field_ef_document\/ef1634en.pdf."},{"key":"ref_2","unstructured":"European Commission (2019, December 20). Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions on an EU Strategic Framework on Health and Safety at Work 2014\u20132020. Available online: https:\/\/bit.ly\/2D7qLwp."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"253","DOI":"10.1016\/j.survophthal.2005.02.008","article-title":"Computer vision syndrome: A review","volume":"50","author":"Blehm","year":"2005","journal-title":"Surv. Ophthalmol."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"502","DOI":"10.1111\/j.1475-1313.2011.00834.x","article-title":"Computer vision syndrome: A review of ocular causes and potential treatments","volume":"31","author":"Rosenfield","year":"2011","journal-title":"Ophthalmic Physiol. Opt."},{"key":"ref_5","unstructured":"Instituto Nacional de Seguridad y Salud en el Trabajo (INSST) (2016). Gu\u00eda T\u00e9cnica De Evaluaci\u00f3n Y Prevenci\u00f3n De Los Riesgos Relativos A La Utilizaci\u00f3n De Equipos Con Pantallas De Visualizaci\u00f3n, Ministerio de Trabajo y Asuntos Sociales. Available online: https:\/\/bit.ly\/2qryCT3."},{"key":"ref_6","unstructured":"Helander, M.G., Landauer, T.K., and Prabhu, P.V. (1997). Design of the Computer Workstation. Handbook of Human-Computer Interaction, Elsevier. [2nd ed.]."},{"key":"ref_7","first-page":"531","article-title":"Accommodative and binocular vision disorders associated with video display terminals: Diagnosis and management issues","volume":"67","author":"Scheiman","year":"1996","journal-title":"J. Am. Optom. Assoc."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"190","DOI":"10.3109\/02713683.2010.544442","article-title":"Blink rate, blink amplitude, and tear film integrity during dynamic visual display terminal tasks","volume":"36","author":"Cardona","year":"2011","journal-title":"Curr. Eye Res."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1136\/oem.58.4.267","article-title":"Psychological factors and visual fatigue in working with video display terminals","volume":"58","author":"Mocci","year":"2001","journal-title":"Occup. Environ. Med."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1093\/occmed\/kqi029","article-title":"Musculoskeletal disorders and visual strain in intensive data processing workers","volume":"55","author":"Woods","year":"2005","journal-title":"Occup. Med."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"51","DOI":"10.4103\/0301-4738.37596","article-title":"A community-based study of asthenopia in computer operators","volume":"56","author":"Bhanderi","year":"2008","journal-title":"Indian J. Ophthalmol."},{"key":"ref_12","first-page":"662","article-title":"A reliable and valid questionnaire was developed to measure computer vision syndrome at the workplace","volume":"38","author":"Crespo","year":"2015","journal-title":"J. Clin. Epidemiol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1111\/opo.12275","article-title":"Effect of contact lens use on Computer Vision Syndrome","volume":"36","author":"Tauste","year":"2016","journal-title":"Ophthalmic Physiol. Opt."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"228","DOI":"10.1111\/cxo.12248","article-title":"Computer vision syndrome in presbyopia and beginning presbyopia: Effect of spectacle lens type","volume":"98","author":"Jaschinski","year":"2015","journal-title":"Clin. Exp. Optom."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"244","DOI":"10.1111\/cxo.12274","article-title":"How to place the computer monitor: Measurements on vertical zones of clear vision with presbyopic corrections","volume":"98","author":"Haensel","year":"2015","journal-title":"Clin. Exp. Optom."},{"key":"ref_16","unstructured":"(2019, December 20). Sample Size and Power Calculator GRANMO, Version 7.12, April 2012. Available online: https:\/\/www.imim.cat\/ofertadeserveis\/software-public\/granmo\/."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"367","DOI":"10.1097\/00006324-199706000-00019","article-title":"Power vectors: An application of Fourier analysis to the description and statistical analysis of refractive error","volume":"74","author":"Thibos","year":"1997","journal-title":"Optom. Vis. Sci."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1007\/s10654-015-0010-0","article-title":"Prevalence of refractive error in Europe: The European Eye Epidemiology (E(3)) Consortium","volume":"30","author":"Williams","year":"2015","journal-title":"Eur. J. Epidemiol."},{"key":"ref_19","unstructured":"International Organization for Standardization (ISO) (2019, December 20). Ergonomics-Evaluation of Static Working Postures (ISO 11226:2000). Available online: https:\/\/www.iso.org\/standard\/25573.html."},{"key":"ref_20","unstructured":"RibbonSoft GmbH (2019, December 20). QCAD Opensource CAD, Trial Version 3.19.2. Available online: https:\/\/www.qcad.org\/en\/."},{"key":"ref_21","unstructured":"Seguridad de las M\u00e1quinas (2019, December 20). Comportamiento F\u00edsico del ser Humano. Parte 5: Evaluaci\u00f3n del Riesgo por Manipulaci\u00f3n Repetitiva de Alta Frecuencia. UNE-EN 1005-5:2007. Available online: https:\/\/bit.ly\/2MfLdAe."},{"key":"ref_22","unstructured":"International Organization for Standardization (ISO) (2019, December 20). Ergonomic Requirements for Office Work with Visual Display Terminals (VDTs)\u2014Part 5: Workstation Layout and Postural Requirements (ISO 9241-5:1998). Available online: https:\/\/www.iso.org\/standard\/16877.html."},{"key":"ref_23","unstructured":"(2019, December 20). Real Decreto 486\/1997, de 14 de Abril, por el que se Establecen las Disposiciones M\u00ednimas de Seguridad y Salud en los Lugares de Trabajo. BOE n\u00b0 97, 23\/04\/1997. Available online: https:\/\/www.boe.es\/eli\/es\/rd\/1997\/04\/14\/486\/con."},{"key":"ref_24","unstructured":"(1990). Council Directive 90\/270\/EEC of 29 May 1990 on the Minimum Safety and Health Requirements for Work with Display Screen Equipment. Off. J. Eur. Commun., L156, 14\u201318. Available online: http:\/\/data.europa.eu\/eli\/dir\/1990\/270\/oj."},{"key":"ref_25","unstructured":"IBM Corp (2019, December 20). IBM SPSS Statistics for Windows, Version 24.0. Available online: https:\/\/www.ibm.com\/us-en\/."},{"key":"ref_26","unstructured":"R Core Team (2019, December 20). R: A language and Environment for Statistical Computing, Version 3.5.1. Available online: https:\/\/www.R-project.org\/."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"270","DOI":"10.1016\/j.mjafi.2016.03.016","article-title":"Computer and Visual Display Terminals (VDT) Vision Syndrome (CVDTS)","volume":"72","author":"Parihar","year":"2016","journal-title":"Med. J. Armed Forces India"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"303","DOI":"10.3233\/WOR-152162","article-title":"Computer vision syndrome: A review","volume":"52","author":"Gowrisankaran","year":"2015","journal-title":"Work"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"e000146","DOI":"10.1136\/bmjophth-2018-000146","article-title":"Digital eye strain: Prevalence, measurement and amelioration","volume":"3","author":"Sheppard","year":"2018","journal-title":"BMJ Open Ophthalmol."},{"key":"ref_30","first-page":"459","article-title":"Anxiety, musculoskeletal and visual disorders in video display terminal workers","volume":"97","author":"Tomei","year":"2006","journal-title":"Minerva Med."},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Larese Filon, F., Drusian, A., Ronchese, F., and Negro, C. (2019). Video Display Operator Complaints: A 10-Year Follow-Up of Visual Fatigue and Refractive Disorders. Int. J. Environ. Res. Public Health, 16.","DOI":"10.3390\/ijerph16142501"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1186\/s12199-017-0611-1","article-title":"The impact of different lenses on visual and musculoskeletal complaints in VDU workers with work-related neck complaints: A randomized controlled trial","volume":"22","author":"Cagnie","year":"2017","journal-title":"Environ. Health Prev. Med."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"105","DOI":"10.2486\/indhealth.46.105","article-title":"Effects of VDT workstation lighting conditions on operator visual workload","volume":"46","author":"Lin","year":"2008","journal-title":"Ind. Health"},{"key":"ref_34","first-page":"123","article-title":"Influence of different lighting levels at workstations with video display terminals on operators\u2019 work efficiency","volume":"54","author":"Janosik","year":"2003","journal-title":"Med. Pracy"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"493","DOI":"10.1177\/154193120905300802","article-title":"Computer Display Placement for progressive addition lens wearers: A field observation of multiple display conditions","volume":"53","author":"Allie","year":"2009","journal-title":"Proc. Hum. Factors Ergon. Soc. Annu. Meet."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"329","DOI":"10.3233\/WOR-152158","article-title":"Field observations of display placement requirements and character size for presbyopic and prepresbyopic computer users","volume":"52","author":"Bartha","year":"2015","journal-title":"Work"},{"key":"ref_37","first-page":"680","article-title":"Visual discomfort and astigmatic refractive errors in VDT use","volume":"62","author":"Wiggins","year":"1991","journal-title":"J. Am. Optom. Assoc."},{"key":"ref_38","first-page":"177","article-title":"Effects of residual astigmatism in contact lens wear on visual discomfort in VDT use","volume":"63","author":"Wiggins","year":"1992","journal-title":"J. Am. Optom. Assoc."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/S1529-1839(04)70009-3","article-title":"Productivity associated with visual status of computer users","volume":"75","author":"Daum","year":"2004","journal-title":"Optometry"},{"key":"ref_40","first-page":"118","article-title":"Editing performance-VDT vs. hard copy, black on white vs. white on black","volume":"66","author":"Sheedy","year":"1989","journal-title":"Optom. Vis. Sci."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1080\/01449298708901822","article-title":"Proof-reading: VDU and paper text compared for speed, accuracy and fatigue","volume":"6","author":"Wilkinson","year":"1987","journal-title":"Behav. Inf. Technol."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1080\/01449298308914479","article-title":"Proof-reading texts on screen and paper","volume":"2","author":"Wright","year":"1983","journal-title":"Behav. Inf. Technol."},{"key":"ref_43","first-page":"105244","article-title":"Effects of font size and display quality on reading performance and visual discomfort of developmental readers","volume":"87","author":"Yang","year":"2010","journal-title":"Optom. Vis. Sci."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"1093","DOI":"10.1097\/OPX.0000000000000893","article-title":"The effects of age, refractive status, and luminance on pupil size","volume":"93","author":"Guillon","year":"2016","journal-title":"Optom. Vis. Sci."},{"key":"ref_45","first-page":"1132","article-title":"Factors affecting light-adapted pupil size in normal human subjects","volume":"35","author":"Winn","year":"1994","journal-title":"Investig. Ophthalmol. Vis. Sci."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"541","DOI":"10.1016\/0042-6989(90)90066-T","article-title":"Neural contribution to spatiotemporal contrast sensitivity decline in healthy ageing eyes","volume":"30","author":"Elliott","year":"1990","journal-title":"Vision Res."},{"key":"ref_47","first-page":"CR296","article-title":"Association between occupational asthenopia and psycho-physiological indicators of visual strain in workers using video display terminals","volume":"12","author":"Ustinaviciene","year":"2006","journal-title":"Med. Sci. Monit."},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Ranasinghe, P., Wathurapatha, W.S., Perera, Y.S., Lamabadusuriya, D.A., Kulatunga, S., Jayawardana, N., and Katulanda, P. (2016). Computer vision syndrome among computer office workers in a developing country: An evaluation of prevalence and risk factors. BMC Res. Notes, 9.","DOI":"10.1186\/s13104-016-1962-1"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1111\/j.1475-1313.2012.00925.x","article-title":"Computer-related visual symptoms in office workers","volume":"32","author":"Portello","year":"2012","journal-title":"Ophthalmic Physiol. Opt."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"291","DOI":"10.3233\/WOR-131778","article-title":"Risk factors, incidence and persistent of symptoms from the eyes among professional computer users","volume":"47","author":"Toomingas","year":"2014","journal-title":"Work"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"738","DOI":"10.1097\/OPX.0b013e31812f7546","article-title":"Computer use, symptoms, and quality of life","volume":"84","author":"Hayes","year":"2007","journal-title":"Optom. Vis. Sci."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"457","DOI":"10.5271\/sjweh.2200","article-title":"Work with video display terminals among office employees. I. Subjective symptoms and discomfort","volume":"11","author":"Knave","year":"1985","journal-title":"Scand. J. Work Environ. Health"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1016\/j.clae.2010.03.002","article-title":"Tear film evaporation\u2014Effect of age and gender","volume":"33","author":"Guillon","year":"2010","journal-title":"Contact Lens Anterior Eye"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"176","DOI":"10.1016\/j.clae.2010.03.002","article-title":"Tear film dynamics and lipid layer characteristics\u2014Effect of age and gender","volume":"33","author":"Guillon","year":"2010","journal-title":"Contact Lens Anterior Eye"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"318","DOI":"10.1016\/S0002-9394(03)00218-6","article-title":"Prevalence of dry eye syndrome among US women","volume":"136","author":"Schaumberg","year":"2003","journal-title":"Am. J. Ophthalmol."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"763","DOI":"10.1001\/archophthalmol.2009.103","article-title":"Prevalence of dry eye disease among US men: Estimates from the Physicians\u2019 Health Studies","volume":"127","author":"Schaumberg","year":"2009","journal-title":"Arch. Ophthalmol."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"732","DOI":"10.1097\/00006324-200311000-00008","article-title":"Is all asthenopia the same?","volume":"80","author":"Sheedy","year":"2003","journal-title":"Optom. Vis. Sci."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1016\/j.ajo.2017.06.033","article-title":"Prevalence of diagnosed dry eye disease in the United States among adults aged 18 years and older","volume":"182","author":"Farrand","year":"2017","journal-title":"Am. J. Ophthalmol."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1016\/j.ajo.2019.01.026","article-title":"Estimated Prevalence and Incidence of Dry Eye Disease Based on Coding Analysis of a Large, All-age United States Health Care System","volume":"202","author":"Dana","year":"2019","journal-title":"Am. J. Ophthalmol."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1001\/archopht.122.2.151","article-title":"Dry eye signs and symptoms in women with premature ovarian failure","volume":"122","author":"Smith","year":"2004","journal-title":"Arch. Ophthalmol."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"1304","DOI":"10.1001\/jamaophthalmol.2013.4399","article-title":"Relationship between dry eye symptoms and pain sensitivity","volume":"131","author":"Vehof","year":"2013","journal-title":"JAMA Ophthalmol."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1186\/s13293-015-0037-7","article-title":"Sex differences in Sj\u00f6gren\u2019s syndrome: A comprehensive review of immune mechanisms","volume":"6","author":"Brandt","year":"2015","journal-title":"Biol. Sex Differ."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"284","DOI":"10.1016\/j.jtos.2017.04.001","article-title":"TFOS DEWS II Sex, Gender, and Hormones Report","volume":"15","author":"Sullivan","year":"2017","journal-title":"Ocul. Surf."},{"key":"ref_64","first-page":"51","article-title":"Dry eye syndrome in menopause and perimenopausal age group","volume":"8","author":"Peck","year":"2017","journal-title":"J. Midlife Health"},{"key":"ref_65","doi-asserted-by":"crossref","unstructured":"Soria-Oliver, M., L\u00f3pez, J.S., Torrano, F., Garc\u00eda-Gonz\u00e1lez, G., and Lara, \u00c1. (2019). New Patterns of Information and Communication Technologies Usage at Work and Their Relationships with Visual Discomfort and Musculoskeletal Diseases: Results of a Cross-Sectional Study of Spanish Organizations. Int. J. Environ. Res. Public Health, 16.","DOI":"10.3390\/ijerph16173166"},{"key":"ref_66","first-page":"155","article-title":"Temporary myopia and subjective symptoms in video display terminal operators","volume":"80","author":"Luberto","year":"1989","journal-title":"Med. Lav."},{"key":"ref_67","first-page":"466","article-title":"Relation of asthenopia and some ophthalmological, neuropsychological, and musculoskeletal parameters in workers assigned to video display terminals","volume":"94","author":"Carta","year":"2003","journal-title":"La Medicina del Lavoro"},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"328","DOI":"10.2486\/indhealth.45.328","article-title":"Influence of work duration or physical symptoms on mental health among Japanese visual display terminal users","volume":"45","author":"Ye","year":"2007","journal-title":"Ind. Health"},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1177\/216507990205001102","article-title":"Office workers and video display terminals: Physical, psychological and ergonomic factors","volume":"50","author":"Travers","year":"2002","journal-title":"AAOHN J."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"234","DOI":"10.1111\/cxo.12259","article-title":"Comparison of progressive addition lenses for general purpose and for computer vision: An office field study","volume":"98","author":"Jaschinski","year":"2015","journal-title":"Clin. Exp. Optom."},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"1046","DOI":"10.1097\/OPX.0000000000001295","article-title":"Presbyopic Personal Computer Work: A Comparison of Progressive Addition Lenses for General Purpose and Personal Computer Work","volume":"95","author":"Kolbe","year":"2018","journal-title":"Optom. Vis. Sci."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"341","DOI":"10.1097\/01.opx.0000134908.44145.49","article-title":"Will visual discomfort among visual display unit (VDU) users change in development when moving from single vision lenses to specially designed VDU progressive lenses?","volume":"81","author":"Horgen","year":"2004","journal-title":"Optom. Vis. Sci."},{"key":"ref_73","doi-asserted-by":"crossref","first-page":"854","DOI":"10.1080\/00140139.2012.681808","article-title":"Effects of job-related stress and burnout on asthenopia among high-tech workers","volume":"55","author":"Ostrovsky","year":"2012","journal-title":"Ergonomics"},{"key":"ref_74","doi-asserted-by":"crossref","unstructured":"S\u00e1nchez-Brau, M.M., Domenech-Amigot, B., Brocal-Fern\u00e1ndez, F., Quesada-Rico, J.A., and Segu\u00ed-Crespo, M.M. (2020). Decrease in Computer Vision Syndrome in Presbyopic VDT Workers According to Ophthalmic Progressive Lens Design, in press.","DOI":"10.1111\/opo.12832"},{"key":"ref_75","doi-asserted-by":"crossref","first-page":"18","DOI":"10.5271\/sjweh.642","article-title":"Effects of ergonomic intervention in work with video display units","volume":"28","author":"Ketola","year":"2002","journal-title":"Scand. J. Work Environ. Health"},{"key":"ref_76","doi-asserted-by":"crossref","unstructured":"Stringham, J.M., Stringham, N.T., and O\u2019Brien, K.J. (2017). Macular carotenoid supplementation improves visual performance, sleep quality, and adverse physical symptoms in those with high screen time exposure. Foods, 6.","DOI":"10.3390\/foods6070047"}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/17\/3\/1003\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T08:54:55Z","timestamp":1760172895000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/17\/3\/1003"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,2,5]]},"references-count":76,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2020,2]]}},"alternative-id":["ijerph17031003"],"URL":"https:\/\/doi.org\/10.3390\/ijerph17031003","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,2,5]]}}}