Study on Treatment of Varicose Veins by Endovenous Laser (1940 nm vs 1470 nm)

The goal of this clinical trial is to compare efficacy of two wavelength for EndoVenous Laser Ablation (EVLA) in treatment of varicose veins of the lower limbs.The main questions it aims to answers are :Is the increase of wavelength form 1470 nm to 1940 nm affect the efficacy of varicose veins treatment ?Is the increase of wavelength reduce complication or pain ? Participants are patients with varicose veins of lower limbs and candidate for endovenous laser ablation.After laser ablation patients will be followed during 5 years for clinical evaluation, recording potential treatment complications and quality of life evaluation.Researchers will compare strategy 1(EVLA with an endovenous laser at 1940 nm) vs strategy 2 (EVLA with an endovenous laser at 1470 nm) in varicose veins treatment to see if efficacy of treatment is not reduce, and to see if complications of EVLA treatment can be reduced.

Inclusion Criteria:Primary insufficiency of the great saphenous vein (GSV) and/or small saphenous vein (SSV)Patient candidate for endothermic treatment of the lower limbsCEAP: C2 - C6Patient with a target vein diameter (GSV and/or SSV) >= 3 mm throughout the target vein segmentPatient affiliated or beneficiary of a social security schemePatient having signed the informed consentExclusion Criteria:Patient with a current serious pathology and/or a life expectancy of less than 5 yearsPatient who has had a deep or superficial vein thrombosis in the previous 6 monthsObliterating arteriopathy of the lower limb concerned, with an IPS < 0.8 or > 1.3Patient with post-thrombotic obstructive syndrome at the popliteal and/or femoral and/or iliac stage on the ipsilateral lower limbPatient with primary or post-thrombotic axial deep venous reflux on the ipsilateral lower limbSuspicion of non-post-thrombotic iliac compression on echo-dopplerContraindication to the planned treatment techniquePatient whose geographical distance is not compatible with the follow-up of the studyPregnant or breastfeeding womenPatient linguistically or psychologically unable to understand the information given, to give informed consent or to answer the study questionnaires.Protected patients: Adults under guardianship, or other legal protection; Hospitalized without consent.