To collect comparative evidence on patient reported outcomes of Varithena compared to ETA when used to treat the incompetent great saphenous vein (GSV). ETA will include either radiofrequency ablation or endovenous laser ablation according to the site's standard practice. To provide long term (1-year, 2-year, and 3-year) outcomes.
The purpose of this study is to observe insights into the benefits of Varithena compared to Endothermal Ablation (ETA) in the treatment of the great saphenous vein.