To compare a computer exercise program (Mitii) with conservative home-training according to printed instructions in the rehabilitation of patients with vistibular dysfunction in an outpatient clinic To investigate whether the effect of vestibular rehabilitation is preserved three months after the completion of supervised training in an outpatient clinic for specific vestibular rehabilitation and whether a computer assisted home training program (Mitii) is superior to printed instructions in this respect To evaluate patient experience and barriers for the use fo the computer assisted rehabilitation of patients with vestibular dysfunction