Laser, Radiofrequency or Glue for Varicose Veins: Which Is Right for You?
The three keyhole ways of closing a faulty vein compared, and why the ultrasound scan, not the device, should make the decision.
Short answer: endovenous laser (EVLA), radiofrequency ablation (RFA) and medical glue (VenaSeal) all close the refluxing vein from the inside through a single needle puncture, and for a typical straight saphenous vein the results are similar. Laser and radiofrequency use heat and need local anaesthetic along the vein; glue needs no heat, less anaesthetic and usually no compression stockings afterwards, but costs more in consumables and is not suitable for every vein. The right choice depends on the vein's size, depth and course on your duplex ultrasound, on your skin and medical history, and on how quickly you need to be back to normal.
What do the three treatments have in common?
All three are endovenous ablation: a thin catheter is passed into the faulty vein under ultrasound guidance, the vein is closed along its length, and the body reroutes blood through healthy veins and gradually absorbs the treated one. None requires a general anaesthetic or a hospital stay. All three are recommended by international guidelines ahead of traditional stripping surgery for a suitable saphenous vein, and all three depend on the same thing for a good result: closing the correct vein, identified on a careful duplex scan, together with any branches that feed from it.
How do laser, radiofrequency and glue differ?
| Endovenous laser (EVLA) | Radiofrequency ablation (RFA) | VenaSeal glue | |
|---|---|---|---|
| How the vein is closed | Laser fibre heats the vein wall | Radiofrequency catheter heats the vein wall in segments | Medical adhesive seals the vein; no heat |
| Anaesthetic | Local anaesthetic fluid injected along the whole vein (tumescent) | Local anaesthetic fluid along the whole vein | A single local anaesthetic injection at the entry point |
| Sensation during treatment | Pressure and mild warmth; the injections are the main discomfort | As for laser | Mild pressure; few injections |
| Bruising and tightness afterwards | Common for one to two weeks | Usually a little less than laser in comparative studies | Usually least; some people have a short-lived inflammatory skin reaction over the vein |
| Compression stockings | Commonly one to two weeks | Commonly one to two weeks | Often not required |
| Return to desk work | One to three days | One to three days | Same or next day |
| Veins it suits less well | Very superficial or tortuous veins; veins close to a nerve | Very superficial or tortuous veins; veins close to a nerve | Very large veins; known adhesive sensitivity; some tortuous veins |
| Long-term closure | High and durable in published series | High and durable in published series | High in published series; longest follow-up is shorter because the technique is newer |
| Consumable cost | Single-use fibre | Single-use catheter | Single-use kit; higher than the heat devices |
Figures are typical ranges from the published literature and guidelines, not promises. Individual recovery varies.
Why does heat matter?
Heat is effective, but it has to be kept away from the skin and the nerves that run close to the vein in the lower leg. That is why laser and radiofrequency need a cushion of dilute local anaesthetic fluid injected along the entire vein before treatment, and why they are used more cautiously for a vein that lies very close to the skin or in the lower calf. Glue avoids the heat and the fluid, which is why it tends to be the gentler experience on the day and why it can be used in some veins where heat would be a concern. The trade-off is a small risk of a reaction to the adhesive and a higher material cost.
How do we choose for you?
The decision is made on the scan, not in a brochure. The duplex ultrasound maps which veins are refluxing, how large they are, how deep they lie, how straight they run and whether the deep veins are healthy. From that map:
- A straight great saphenous vein of moderate size can be treated well with any of the three; the choice then rests on your preference about anaesthetic injections, stockings and cost.
- A very large vein is generally better suited to a heat device than to glue.
- A vein close to the skin or running down the calf may favour glue, or foam sclerotherapy, over heat.
- Many visible surface branches usually need treatment in their own right, by microphlebectomy or foam sclerotherapy, whichever method closes the main vein.
- Previous treatment or a tortuous vein may change the plan altogether; occasionally surgery remains the sensible choice.
Dr Choong has used radiofrequency ablation since 2008 and was an early adopter of VenaSeal in Singapore, so the recommendation is not driven by which device is available. Read more about radiofrequency and laser ablation and VenaSeal.
Common questions about laser, radiofrequency and glue
Is one method more effective than the others?
For a suitable saphenous vein, the published closure rates for laser, radiofrequency and glue are all high and broadly comparable. The differences that matter to most people are in comfort on the day, bruising, stockings and cost, not in whether the vein closes.
Which one hurts least?
Glue usually involves the fewest injections and the least bruising. With laser and radiofrequency most people describe pressure rather than pain during treatment, and tightness along the vein for a week or two afterwards that simple pain relief covers.
Can the vein come back after any of them?
The treated vein very rarely reopens, but new veins can develop over the years whichever method is used, because treatment does not change the tendency of other valves to fail. A follow-up scan at around six weeks confirms closure, and returning symptoms years later should be assessed with a new scan rather than assumed to be the old vein.
Does insurance cover these treatments?
Treatment of varicose veins that cause symptoms or skin changes is usually claimable under Integrated Shield plans and corporate schemes, subject to the insurer's assessment; purely cosmetic treatment generally is not. Our fees are governed by the panels we participate in, and the clinic team will give you a written estimate and help check your cover before anything is booked. See payment and insurance.
Scan first, then decide
The right question is not "which device?" but "which veins are faulty, and what is the best way to close them?" A duplex ultrasound at a first visit answers that, usually on the same day, and you leave with a plan rather than a sales pitch. Read about what a first visit for varicose veins involves, or arrange one:
Sources: European Society for Vascular Surgery 2022 clinical practice guidelines on chronic venous disease; NICE CG168 Varicose veins: diagnosis and management. Full references are listed at the end of the varicose veins page.