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Effect of reduced v...
Effect of reduced visual acuity on precision of two-dimensional tracing movements
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- Domkin, Dmitry (författare)
- Högskolan i Gävle,Arbetshälsovetenskap,Centrum för belastningsskadeforskning
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- Richter, Hans, 1961- (författare)
- Högskolan i Gävle,Arbetshälsovetenskap,Centrum för belastningsskadeforskning
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- Zetterlund, Christina, 1956- (författare)
- Örebro universitet,Institutionen för hälsovetenskap och medicin,Low Vision Centre, Örebro County Council, Örebro, Sweden; Centre for Rehabilitation Research, Örebro County Council, Örebro, Sweden;,Örebro County Council, Örebro, Sweden; Örebro University, Örebro, Sweden
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- Lundqvist, Lars-Olov, 1958- (författare)
- Örebro universitet,Institutionen för hälsovetenskaper,Centre for Rehabilitation Research, Örebro County Council, Örebro, Sweden,Örebro County Council, Örebro, Sweden; Örebro University, Örebro, Sweden
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(creator_code:org_t)
- Madrid, España : Spanish Council of Optometry, 2016
- 2016
- Engelska.
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Ingår i: Journal of Optometry. - Madrid, España : Spanish Council of Optometry. - 1888-4296. ; 9:2, s. 93-101
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Oftalmologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Ophthalmology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Annan medicin och hälsovetenskap -- Övrig annan medicin och hälsovetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Other Medical and Health Sciences -- Other Medical and Health Sciences not elsewhere specified (hsv//eng)
Nyckelord
- Eye-hand coordination
- tracing
- Visual acuity
- low vision
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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