Varicose veins are a common chronic venous disorder affecting 20 to 60% of adults worldwide. However, the disease occurrence varies significantly by geographical region; with comparatively lowered incidence of 19% in Asian ethnic group than the other ethnic groups.

Varicose veins are superficial, dilated, tortuous and enlarged veins, generally larger than 3mm in  diameter,  occuring due to loss of valvular efficiency which is a product of the resultant venous hypertension in standing position

Various Venous outcomes assessment tools have been used to evaluate the severity of venous disease and provide standardized evaluation of treatment effectiveness.

To standardize the diverse clinical manifestations of CVI, clinical, etiological, anatomical, and pathological (CEAP) classification was developed by American Venous Forum at the sixth annual meeting in 1994.[4] It lacks the ability to assess disease severity. An Ad hoc Committee of the American Venous Forum on Venous Outcome Assessment proposed venous clinical severity score (VCSS) on March 2000.

Venous valvular incompetence/reflux assessed by venous doppler study using the Valsalva test and calf compression (manual or with a pneumatic cuff) is the most frequently used ultrasound criterion for significant reflux in many studies. It is a semi-quantitative grading (1=mild, 2=moderate and 3=severe) based on blood flow velocity and duration of reflux shown by reversed flow during decompression.

They have been used as independent determinants of venous disease severity, but correlation between these tools has not been tested.

This study is undertaken to correlate VCSS (venous clinical severity score) with grading of VRS (venous reflux score) by using the standard colour Doppler in lower limb varicose veins