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Abstract
Virtual reality (VR) is a new technology that creates a video game system that relies on three dimensional movements to cue real-time responses within the software; it is also named as Wii therapy. This study was to evaluate the effect of virtual reality on improving balance in hemiparetic cerebral palsied children. Forty spastic hemiparetic cerebral palsied children age ranged from five to seven years participated in this study. They were classified randomly into two groups of equal numbers, control and study groups. Biodex balance system (BBS) used to evaluate balance in the two groups before and after three successive months of application of the treatment programs. The control group received a selected physical therapy program. The study group received the same selected physical therapy program given to the control group in addition to virtual reality (Wii therapy). The results of the pre-treatment revealed no significant difference in all measuring variables between the two groups. In comparing the pre and post-treatment results for the control and study groups{u2019} revealed significant improvement in all variables. Post treatment significant improvement was recorded in balance of the study group. It was conclude that the selected Wii therapy had a significant effect in improving the balance of the hemiparetic cerebral palsy children participated in this study