Although research until now has employed computer monitors for stimulation presentation to measure visual information, the size of those monitors has not been called into question. In order to better stimulate the situation on the playing field, this study compared the visual search strategies in both high presence (large-size screen monitor) and limited area reflection (small-size screen monitor). The purpose of this study, then, was to examine the difference in the visual information processing by assigning athletes the task of smooth pursuit eye movement using monitors of different sizes. The experiment employed 2 stimulus presentation size (60×60 cm, 180×180 cm) coordinated by a projector. We investigated accuracy and distance while participant were pursuing a moving fixation point. With regard to monitory size, no significant difference was observed in the accuracy of the smooth pursuit eye movement. In addition we calculated the distance of the fixation point from the convergence angle and found that when participants in the study set their eyes upon a narrow field, the fixation point was further than when looking at a wider field. Participants who continued to set their eyes upon a point close in distance to themselves demonstrated a high degree of fatigue. This study found that the visual information processing by difference in size had multiple visual strategies. This suggest that by employing a larger monitors which better stimulate the situation on actual playing fields may be able to better bring out the visual search strategies of athletes. The results of this study may become fundamental data in the development of a visual training system.
