<unk>  involves Doppler ultrasonography to assess the hemodynamics. Specifically the ultrasound study is to figure out where in the venous system the reflux begins. Then an operation is performed under local anesthesia, consisting of a few incisions and tying off of veins (usually one to four), without venous ablation. The ties are placed according to the ultrasound mapping. Areas where the veins are varicose may also be removed.
CHIVA method
NDR Method
Shettles method
Kick chart
Tessys method
LogMAR chart
Monocular estimate method
Consensus error grid