Comparing Binocular Vision Suppression on an e-Reader versus a Smartphone.
Purpose: Normal binocular vision is an important factor that influences visual performance. Hence, this study aims to determine the differences in binocular vision suppression when using common handheld devices compared with a hard copy control. Methods: In this experimental study, 11 subjects were...
| Publicado en: | Journal of Behavioral Optometry Vol. 23; no. 5/6; pp. 152 - 156 |
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| Autores principales: | , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Optometric Extension Program
2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=85506425&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 85506425 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10458395 6MY5 jtl: Journal of Behavioral Optometry issn: 10458395 maglogo: N pubinfo: dt: 2012 vid: 23 iid: 5/6 pid: 46881 pub: Optometric Extension Program place: Lutherville Timonium, Maryland artinfo: ui: 85506425 85506425 108030056 85506425 ppf: 152 ppct: 4 formats: fmt: @attributes: type: P tig: atl: Comparing Binocular Vision Suppression on an e-Reader versus a Smartphone. aug: au: Kundart, James Momeni-Moghadam, Hamed Nguyen, Jessica Hayes, John R. affil: College of Optometry, Pacific University, Forest Grove, Oregon sug: subj: Vision Physiology Wireless Communications Computers, Portable Vision Disorders Risk Factors Human Reading Vision Disorders Epidemiology Incidence Repeated Measures Analysis of Variance Data Analysis Software Mann-Whitney U Test T-Tests Male Female Adult Descriptive Statistics Post Hoc Analysis Adult: 19-44 years Male Female ab: Purpose: Normal binocular vision is an important factor that influences visual performance. Hence, this study aims to determine the differences in binocular vision suppression when using common handheld devices compared with a hard copy control. Methods: In this experimental study, 11 subjects were asked to read the same text on a backlit smartphone, non-back-lit display e-reader, and hard copy (black text on white paper). Suppression was determined by subjective reporting using anaglyphic bar readers and glasses. The viewing distance was measured with a millimeter rule. Results: The incidence of suppression was 72.7% for the e-reader, 27.2% for the hardcopy, and 18.1% for the smart-phone. There were significant differences between the e-reader and hard copy by repeated measurement ANOVA for each reading condition. The working distance was farthest with the hard copy and closest with the smartphone. The mean working distances were significantly different by repeated measurement ANOVA with all three devices, with hard copy being read at 32.9± 3.0 cm, the e-reader at 29.9+5.3 cm, and the smartphone at 28.6±5.8 cm. Conclusions: Suppression of binocular vision is more likely on an e-reader and hard copy. This occurs despite a farther working distance than the smartphone and a closer working distance on an e-reader than a hard copy. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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