A 73-year-old morbidly obese female patient (weight 125 kg, height 156 cm) was scheduled for cataract surgery of her right eye. Due to a number of severe co-morbidities general anaesthesia was contraindicated. However the patient was very anxious and requested sedation if the procedure was to be undertaken under local anaesthesia. She responded very positively to the proposal of utilising perioperative hypnosis. Hypnotic induction was achieved with the heavy eyelid technique, putting the patient into trance within 30 seconds. Continuous relaxing suggestions as described by the patient herself the day before surgery were used to maintain the trance state. She later reported that she was not aware of being in the operating room, but experienced profound relaxation during the procedure. Perioperative hypnosis proved to be a satisfactory option for sedation in this high-risk patient and should be actively considered for similar easily suggestible patients who are undergoing minor surgery.