Blog > Diagnosis and Treatment > CLACS: Modern Breakthrough for Varicose Veins
CLACS: Modern Breakthrough for Varicose Veins
18-October-2025Category: Diagnosis and Treatment
Varicose veins affect millions worldwide, causing both cosmetic concerns and potential health
complications. In recent years, a groundbreaking treatment called CLACS (Cryo-Laser and
Cryo-Sclerotherapy) has emerged as a game-changer in vascular medicine, offering new hope to
patients seeking effective, minimally invasive solutions.
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Understanding CLACS: A Revolutionary Approach
CLACS, developed by Dr. Kasuo Miyake in Brazil, represents a significant advancement in vein
therapy. This innovative treatment combines the precision of laser therapy with the
effectiveness of sclerotherapy, while incorporating cryotherapy for enhanced patient comfort.
Unlike traditional surgical approaches, CLACS specifically targets spider veins and small
varicose veins with remarkable precision.
Evidence-Based Efficacy
Recent research has demonstrated impressive outcomes for CLACS treatment. Studies conducted at
the Federal University of São Paulo have shown superior vein clearance compared to conventional
sclerotherapy. A comprehensive European multicentre study has reported sustained results with
minimal recurrence over a five-year follow-up period. The University of São Paulo’s
safety-focused research has further confirmed CLACS’s favorable safety profile, documenting
minimal complications.
Confused about treatment options? Our experts will guide you step by step.
The Treatment Process
The CLACS procedure typically takes 30-60 minutes and follows a systematic approach:
• Initial consultation and vein assessment • Application of cryotherapy for local numbing • Initial consultation and vein assessment • Precise vein mapping using transdermal vein light or ultrasound • Many insurers cover varicose vein treatments deemed medically necessary,but
coverage for VenaSeal® varies.
Advantages Over Traditional Treatments
CLACS offers several distinct advantages:
• Minimally invasive nature reduces recovery time • Enhanced comfort through cold air application • High success rates in treating superficial veins • Quick return to daily activities • Reduced risk of complications
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Looking to the Future
As CLACS continues to gain recognition worldwide, its adoption in various countries, including
India, demonstrates its potential to revolutionize varicose vein treatment. The combination of
high efficacy rates, minimal invasiveness, and patient comfort makes it an attractive option for
both practitioners and patients.
The treatment’s success in clinical studies, coupled with positive long-term outcomes, suggests
that CLACS may become the gold standard for treating superficial venous conditions. However, as
with any medical procedure, consultation with a qualified vascular specialist remains essential
for determining the most appropriate treatment approach for individual cases.
For patients seeking a balance between effective treatment and minimal downtime, CLACS
represents a significant advancement in vascular medicine. As research continues and techniques
are refined, this innovative approach promises to remain at the forefront of modern vein
therapy.
For any unanswered questions, reach out to our support team via
email. We’ll respond as soon as possible to assist you.
For Enquiry
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info@avisvascularcentre.com
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+ 91 80089 49900
What makes CLACS different from regular laser or sclerotherapy treatments?
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CLACS is a hybrid technique that combines laser energy, sclerotherapy, and cryotherapy in a single
session. Unlike standalone laser or injection-based treatments, CLACS uses cold air to numb the
skin, laser energy to target tiny veins, and a sclerosing agent to permanently close them. This
multi-layered approach improves precision, comfort, and cosmetic results.
Which types of veins respond best to CLACS treatment?
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CLACS is most effective for spider veins and small varicose veins located close to the skin’s
surface. These veins are often difficult to treat completely with conventional methods alone. CLACS
allows accurate targeting of very fine veins that may otherwise recur after standard sclerotherapy.
Is CLACS painful compared to other vein treatments?
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CLACS is generally better tolerated than traditional sclerotherapy because it uses continuous cold
air to numb the treatment area. Most patients report only mild discomfort or a cooling sensation
during the procedure, without the burning or stinging often associated with injections alone.
How many CLACS sessions are usually required?
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The number of sessions depends on the extent and distribution of the veins. Many patients see
visible improvement after one session, but multiple sessions may be needed for complete clearance,
especially when veins are widespread or dense. Your vascular specialist will determine the optimal
plan after vein mapping.
How soon can normal activities be resumed after CLACS?
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Patients can typically return to routine daily activities the same day or the next day. There is no
need for hospital admission or prolonged rest. Minor redness or swelling may occur temporarily, but
it usually resolves quickly without affecting work or lifestyle.