- Perforators Visit A2 (Retreatment Visit) On the day of treatment the participant will undergo their original randomised treatment as per the protocol unless the participant requests a different treatment or the responsible clinician feels that this is not in the patient's interest. If symptoms are related to incompetent tributaries, the tributary varicose vein treatment protocol will be used for treatment. Technical and non-technical measurements will be recorded. Participants will again also be given a 1-week Visual Analogue Diary and 1-week Analgesia Diary at this visit to be returned at visit A3 (1 week) Technical treatment measurements