The present study was aimed at investigating the effect of presenting visual stimuli with a random arrangement on visual reaction time. Fifty female students (with an average age of 11.23±2.14 years) with superior right hand and without visual impairment were selected by a purposive convenience sampling method. Their visual reaction was measured and recorded using a response time measuring device. In the end, variance analysis with repeated measures was employed to examine the difference in time of reaction to the visual stimuli. Testing the study hypotheses showed that there was no difference between the mean times of reaction to blue visual stimulus with stable status and average size and yellow stimulus with stable status and average size. There was a significant difference between the mean times of visual reaction in two methods of presenting blue and yellow stimuli with stable statuses and average size and the method of presenting the variable. The results indicated that there was a significant difference between a time of reaction to the presented stimuli with a random arrangement, and that changing the status of presenting the stimulus from a stable to changing led to an increase in visual reaction time (p≤0.05). Therefore, there was no significant relationship between a change in stimulus color and visual reaction time. The results of the present study indicated that the speed of reaction to visual stimuli with stable status is higher in than visual stimuli with changing status.