The resilience of natural interceptive actions to refractive blur

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Mann, David, Abernethy, B and Farrow, Damian ORCID: 0000-0002-5020-7910 (2010) The resilience of natural interceptive actions to refractive blur. Human Movement Science, 29 (3). pp. 386-400. ISSN 0167-9457


The impact of refractive visual blur on interceptive skill was examined for a series of highly-demanding striking tasks. Ten skilled cricket batsmen were required to intercept balls projected by either a ball projection-machine (medium-pace only) or cricket bowlers (two velocities; medium-pace and fast-pace) under each of four systematically varied visual conditions. Contact lenses were fitted to simulate increments in refractive blur (habitual, +1.00, +2.00, +3.00 D), with changes in interceptive performance evaluated on three concurrent measures of performance relevant to cricket batting (quality of bat–ball contact, forcefulness of bat-swing, and likelihood of dismissal). For the projection-machine condition, results replicate those reported previously (Mann, Ho, De Souza, Watson, & Taylor, 2007) with blur needing to reach +3.00 D before any significant decreases in performance were evident, a finding further replicated when facing bowlers of comparable velocity. The influence of blur on interception was found to interact with ball-velocity, with the increased temporal demands of fast-paced trials resulting in decreased performance becoming evident at a lower level of blur (+2.00 D). The findings demonstrate that even when presented with a situation replicating highly-demanding performance conditions, substantial degradation of visual clarity is possible before acuity is a limiting factor for interceptive performance.

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Item type Article
DOI 10.1016/j.humov.2010.02.007
Official URL
Subjects Historical > Faculty/School/Research Centre/Department > Institute of Sport, Exercise and Active Living (ISEAL)
Historical > FOR Classification > 1106 Human Movement and Sports Science
Historical > SEO Classification > 970117 Expanding Knowledge in Psychology and Cognitive Sciences
Keywords ResPubID21116, myopia, sport, visual acuity, contact lenses, cricket
Citations in Scopus 50 - View on Scopus
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