Endovenous laser and radiofrequency ablation are very similar: both seal the faulty vein with heat from inside through a needle puncture under local anaesthetic, with comparable results. The difference is the heat source and some recovery details; the choice depends on vein size and shape and the doctor's experience.
If your doctor says the varicose vein needs to be closed, you will probably hear two options: endovenous laser or radiofrequency. What is the difference, and which is better?
The shared idea
In both, a thin catheter or fibre is passed into the faulty vein (usually the saphenous vein) through a small puncture under ultrasound guidance. Anaesthetic fluid is injected around the vein, and a heat source seals it from inside. Blood then naturally reroutes through healthy veins.
Endovenous laser
- A laser fibre is slowly withdrawn through the vein, delivering heat energy.
- Modern devices with higher wavelengths and radial fibres have greatly reduced pain and bruising compared with early generations.
- Flexible for tortuous veins or varying diameters.
Radiofrequency ablation
- A catheter heats the vein wall at a controlled temperature in successive segments.
- Known for low post-procedure pain and bruising.
- Very well suited to straight, medium-diameter veins.
Key similarities
- Both under local anaesthetic, usually as day cases.
- No surgical incision or stitches in most cases.
- Walking immediately, and back to work within a few days usually.
- High, comparable closure rates in studies.
How does the doctor choose?
It depends on vein diameter, tortuosity and depth, whether side-branch varicose veins need extra treatment by sclerotherapy or micro-phlebectomy, and the doctor's experience and equipment. More important than the device is an accurate Doppler that identifies every refluxing vein.
After the procedure
- Compression stockings for a period set by the doctor.
- Daily walking, avoiding long standing and strenuous exercise for some days.
- A follow-up Doppler to confirm closure and check the deep veins.
Read more on the varicose veins page.
Frequently asked questions
Which is less painful: laser or radiofrequency?
Both are done under local anaesthetic; radiofrequency and modern laser both usually cause only mild pain, and the difference is small.
Can the vein reopen after laser?
Rarely. Permanent closure rates are high with both techniques, and Doppler follow-up catches problems early.
When can I return to work?
Most patients return within a day to several days, depending on the job.
Content on this website is for awareness only and does not replace a specialist medical examination.