TY  - JOUR
PY  - 2007//
TI  - Is optimal vision required for the successful execution of an interceptive task?
JO  - Human movement science
A1  - Mann, David L.
A1  - Ho, Nathan Y.
A1  - De Souza, Neilsen J.
A1  - Watson, Damien R.
A1  - Taylor, Scott J.
SP  - 343
EP  - 356
VL  - 26
IS  - 3
N2  - The importance of optimal visual function in demanding interceptive tasks is far from established. The aim of the study was to determine whether induced myopic blur and hence sub-optimal visual function would give rise to a detrimental effect on performance in the execution of an interceptive task. The batting performance of grade level cricket players was assessed facing a bowling machine whilst wearing contact lenses of four different refractive conditions (plano (nil), +1.00, +2.00 and +3.00D over-refraction), inducing increasing amounts of myopic blur. Performance for each condition was assessed based both on the shot quality against each delivery judged by a qualified cricket coach blind to each condition, along with an evaluation of the quality of ball-bat contact for each delivery. No significant change was found in batting performance with the introduction of +1.00 and +2.00D of induced myopic blur. A +3.00D over-correction was required before any significant decrease in batting performance was detected, demonstrating that batters needed to be essentially legally blind (as simulated through the use of the +3.00D over-refraction) before there was any significant measurable decrement in batting performance. We concluded that optimal visual correction is not necessarily required for optimal performance in a demanding interceptive task, and that the human perceptual-motor system is capable of compensating for marked alterations in input.<p /> <p>Language: en</p>
LA  - en
SN  - 0167-9457
UR  - http://dx.doi.org/10.1016/j.humov.2006.12.003
ID  - ref1
ER  -