Unilateral neglect has been the most considerable problem that affects the functional prognosis of CVA patients. The approaches to this symptom are both remedial and compensatory approach. Remedial approach is more valuable method than compensatory approach in terms of reducing the unilateral neglect originally. One of the method of remedial approach is controlled sensory stimulation. The purpose of this study was to investigate the effects of left visual stimuli for reducing the severity of unilateral neglect. The subject was a 40-year-old male patient who had left unilateral neglect. We have put blinking light in the left space of the patient while he performed the line bisection test before and after the stimulation. As a result, the stimulation was not distinctively effective to release the neglect. For further study. it is considered that the environment when stimulating, the strength and duration of stimulation must be controlled.