hig.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Effect of reduced visual acuity on precision of two-dimensional tracing movements
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research.
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research.
Örebro County Council, Örebro, Sweden; Örebro University, Örebro, Sweden.
Örebro County Council, Örebro, Sweden; Örebro University, Örebro, Sweden.
2016 (English)In: Journal of Optometry, ISSN 1888-4296, Vol. 9, no 2, 93-101 p.Article in journal (Refereed) Published
Abstract [en]

Purpose

We intended to assess consequences of reduced visual acuity for performance in a natural simple motor task (tracing) using objective kinematic performance measures. Specifically, we intended to elucidate the kind of relationship between the task performance and best corrected binocular visual acuity and to determine the threshold of visual acuity when task performance starts to deteriorate.

Methods

Ninety-five individuals with different best corrected visual acuity participated in the study (age 49 ± 12 years, mean ± SD, 27 men and 68 women). The participants manually traced maze-like visual patterns of different spatial complexity presented on the screen of a portable notebook computer using Clinical Kinematic Assessment Tool software. Tracing error was computed as performance measure in each trial with a spatial pattern matching technique – rigid point set registration method.

Results

The segmented linear regression analysis showed that the relation between visual acuity and tracing errors was best described with a regression function having a break point between two data segments. Tracing performance was unaffected by values of visual acuity below 0.2 on logMAR scale, but when logMAR values increased above this critical limit (i.e. when visual acuity is further reduced), tracing errors linearly increased. The rate of the increase of the tracing error correlated with the complexity of visual stimulus shape.

Conclusion

Testing of fine motor functions with objective kinematic measures during visuomotor tasks may help differentiating between actual effects of reduced visual acuity on eye–hand coordination in individuals with similar levels of impairment of visual acuity.

Place, publisher, year, edition, pages
2016. Vol. 9, no 2, 93-101 p.
Keyword [en]
eye-hand coordination, tracing, visual acuity, low vision
National Category
Other Medical Sciences not elsewhere specified
Identifiers
URN: urn:nbn:se:hig:diva-17478DOI: 10.1016/j.optom.2015.03.003Scopus ID: 2-s2.0-84929603184OAI: oai:DiVA.org:hig-17478DiVA: diva2:744895
Available from: 2014-09-09 Created: 2014-09-09 Last updated: 2017-02-06Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Domkin, DmitryRichter, Hans
By organisation
Occupational health scienceCentre for Musculoskeletal Research
In the same journal
Journal of Optometry
Other Medical Sciences not elsewhere specified

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 729 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf