A permanent drainage pathway for glaucoma that has not responded to other treatments.
Tube shunt surgery is the fallback when drops, laser, and even trabeculectomy have failed to control glaucoma. A silicone tube channels aqueous fluid from inside the eye to a reservoir plate beneath the conjunctiva, creating a permanent drainage route that lowers intraocular pressure. It is the procedure of choice for refractory, neovascular, and uveitic glaucoma — the cases where other options have been exhausted or are unlikely to work.
Free, no-obligation — you pay the hospital directly with no markup.
A tube shunt consists of a silicone tube connected to an end-plate. The tube is inserted into the anterior chamber, and the plate is sutured to the sclera beneath the conjunctiva. Aqueous fluid drains through the tube to the plate, where a fibrous capsule forms and absorbs the fluid into surrounding tissue, bypassing the blocked natural drainage entirely.
This is not a first-line procedure. It is reserved for eyes where the standard approach — trabeculectomy — has failed or is unlikely to succeed because of scarred conjunctiva, neovascularisation, uveitis, or prior multiple surgeries. The TVT study confirmed comparable long-term success to trabeculectomy with a lower reoperation rate, which is why tube shunts have become the preferred option in complex glaucoma.
Tube shunt surgery requires a surgeon who manages complex glaucoma routinely and a facility equipped for the intensive post-operative monitoring the first two weeks demand. Thailand's glaucoma centres deliver both at a fraction of what this surgery costs at home.
Subspecialist
Complex Glaucoma Expertise
Our partner surgeons are fellowship-trained glaucoma specialists who perform tube shunt implantation as a regular part of their surgical practice — not a rare procedure done a few times a year.
40–60%
Major Cost Savings
Tube shunt surgery in Thailand costs 40–60% less than in the US, UK, or Australia. The implant cost is comparable globally — the difference is in surgical and facility fees.
10–14 Days
Intensive Follow-Up Built In
The longer stay required for tube shunt recovery is more affordable in Bangkok. Daily follow-up during the critical first week is included in your package, not billed as separate visits.
Full
Donor Tissue Availability
Patch graft material — donor sclera or pericardium to cover the tube — is readily available at our partner hospitals. No delays waiting for tissue procurement.
We do not charge for our service — you pay the hospital directly with no markup. Tube shunt surgery involves specialised devices and a longer recovery stay, but the total cost in Thailand is still substantially lower than at home.
Your Quote Will Include
Prices are approximate and vary by technique, surgeon, and hospital. Your personalised quote will include a full cost breakdown.
Tube shunt surgery in Thailand typically costs between $4,000 and $7,200. The range covers both Ahmed and Baerveldt devices, the donor tissue patch graft, all post-operative medications, and intensive follow-up during your 10–14 day stay. More complex cases — pars plana insertion or combined procedures — sit toward the upper end.
The total includes the glaucoma surgeon's fee, the drainage implant device, donor tissue patch graft, anaesthesia, operating theatre, hospital facility charges, all post-operative steroid and antibiotic drops, and multiple follow-up appointments including pressure checks and imaging.
Case complexity drives the price more than device choice. Pars plana tube insertion costs more because it requires vitreoretinal surgical involvement. Eyes with extensive prior surgery or abnormal anatomy take longer to operate on. The Ahmed and Baerveldt devices are similarly priced. Bilateral cases are quoted at a package rate.
Pricing varies by the complexity and scope of the procedure. Typical ranges at our partner hospitals in Thailand:
Exact pricing is confirmed after your consultation and treatment plan are finalised.
Tube shunt surgery in Thailand costs 40–60% less than in the US ($10,000–$16,000), Australia (A$9,200–A$15,200), and UK (£8,000–£14,000). The implant and donor tissue costs are comparable worldwide. The savings are in surgeon fees, facility charges, and the cost of the intensive follow-up period.
Two devices dominate worldwide — the Ahmed valve and the Baerveldt implant. They share the same basic design but differ in how they manage flow in the critical early weeks. The choice depends on how urgently pressure needs to come down and the acceptable risk of hypotony.
A built-in flow restrictor limits drainage from the moment the tube is opened, providing immediate pressure control and reducing the risk of dangerous post-operative hypotony. Particularly suited to eyes that need urgent pressure lowering or are at higher risk of low-pressure complications.
A non-valved device with a larger end-plate, relying on a temporary suture ligature to block flow until a fibrous capsule forms around the plate. The larger surface area typically achieves lower long-term pressures and higher rates of medication-free control than the Ahmed.
The surgical steps are broadly similar for both devices, but the post-operative flow management and capsule maturation differ. Here is what determines technique selection beyond the device itself.
The tube is inserted into the anterior chamber through a needle track, angled to avoid the cornea and iris. A donor tissue patch graft — sclera or pericardium — is sutured over the exposed portion of the tube to prevent erosion through the conjunctiva, the most common long-term complication.
In eyes with anterior chamber abnormalities — shallow chambers, extensive synechiae, or prior failed anterior tube placement — the tube is inserted through the pars plana into the vitreous cavity instead. This requires coordination with a vitreoretinal surgeon and prior vitrectomy.
Frequent antibiotic and steroid drops begin immediately. The eye will be sore, red, and swollen. A protective shield is worn at night. Pressure, tube position, and anterior chamber depth are monitored at daily follow-up visits. With the Ahmed valve, drainage begins immediately; with the Baerveldt, the ligature keeps the tube closed.
Swelling and redness gradually decrease. Pressure may fluctuate as the capsule forms around the plate — this is expected and monitored closely. Follow-up visits continue every few days before you travel home. Avoid heavy lifting, bending, and swimming.
The fibrous capsule matures and pressure control becomes more predictable. For the Baerveldt, the ligature suture dissolves around week 4–6, allowing flow to begin. Steroid drops are tapered on a set schedule. Light activities can resume, but contact sports and strenuous exercise should wait.
Long-term pressure stabilisation is established. Your glaucoma specialist at home monitors pressure, adjusts any remaining medications, and checks the implant at regular intervals. Many patients reach their target pressure with fewer drops than they were using before surgery.
Most patients can fly home 10–14 days after surgery, once pressure is stable, the tube is well-positioned, and the anterior chamber is formed. Cabin pressure at cruising altitude does not affect the drainage implant. Continue your prescribed drops during travel and arrange glaucoma follow-up at home within the first week of returning.
Light desk work can resume after 2–3 weeks, depending on comfort and vision. Avoid heavy lifting, bending below the waist, and straining for at least 6 weeks — these activities increase venous pressure around the eye and can stress the healing capsule. Swimming and contact sports should wait until your surgeon gives explicit clearance.
Between 4 and 12 weeks after surgery, many patients experience a temporary rise in pressure as the fibrous capsule around the plate thickens. This hypertensive phase is common and usually managed by temporarily restarting or increasing glaucoma drops. It resolves as the capsule settles. Awareness of this phase prevents unnecessary alarm when pressure rises during an otherwise normal recovery.
Tube shunt surgery is a more extensive operation than trabeculectomy or MIGS, reflecting the severity of the glaucoma it treats. The risks are real but well understood, and most are manageable with close monitoring.
Tube erosion and corneal contact are the two most important long-term risks. Donor patch grafting prevents erosion in the vast majority of cases, and careful tube positioning away from the corneal endothelium minimises contact risk. Regular long-term monitoring by your home specialist catches these issues early if they develop.
Yes. Thailand's glaucoma centres hold JCI accreditation and follow the same surgical protocols published in the TVT and ABC studies. Our partner surgeons are fellowship-trained glaucoma subspecialists who perform tube shunt implantation routinely, not as an occasional procedure. Donor tissue for patch grafting is readily available through established tissue banks.
The most important preventive measures are precise tube positioning to avoid corneal contact, adequate patch grafting to prevent erosion, and intensive follow-up during the critical first two weeks. Choosing a surgeon who manages complex glaucoma regularly — not just occasional cases — is the single best risk-reduction step. Post-operative compliance with the drop schedule also matters.
If the capsule thickens excessively and pressure rises beyond what drops can control, needling of the capsule may restore function. Tube repositioning is occasionally needed if the tube migrates or contacts the cornea. A second implant in a different quadrant is possible if the first fails completely. Ongoing monitoring at home catches these situations before optic nerve damage progresses.
Tube shunt surgery is a subspecialist procedure. The surgeon's experience with complex glaucoma directly affects the outcome. Here is what distinguishes our partner centres.
Our partner hospitals have dedicated glaucoma departments with slit-lamp suites, anterior segment OCT, ultrasound biomicroscopy for tube position assessment, and ready access to donor tissue. They handle the full spectrum of glaucoma surgery — MIGS, trabeculectomy, and tube shunts — under one roof.
Our partner surgeons completed glaucoma fellowships and manage refractory glaucoma as a core part of their practice. They implant both Ahmed and Baerveldt devices and select between them based on clinical need, not familiarity with one device alone. Pars plana insertion is available when anterior placement is not feasible.
Ask about their experience with the specific type of glaucoma you have — neovascular, uveitic, and post-surgical glaucoma all present different challenges. Ask which device they would recommend and why. Check that they have access to donor tissue for patch grafting and that follow-up frequency in the first two weeks matches the level this surgery demands.
Tube shunt surgery does not restore lost vision. It lowers the pressure that is causing ongoing optic nerve damage, protecting whatever sight remains.
The TVT study showed tube shunts maintain adequate pressure control in approximately 68% of cases at five years — comparable to trabeculectomy but with a lower reoperation rate. Many patients reduce their drop burden significantly, and some achieve medication-free pressure control. The degree of success depends on the severity and type of glaucoma being treated.
Your surgeon sets a target pressure based on the extent of optic nerve damage and the rate of progression. More advanced damage demands lower targets. The consultation covers what is realistically achievable — including the possibility that drops may still be needed, that a hypertensive phase is likely, and that long-term monitoring is non-negotiable.
Tube shunt surgery requires a longer stay than most eye procedures — 10–14 days — because the early post-operative monitoring is intensive and cannot be shortened safely.
Plan for 10–14 days. The first week involves daily or near-daily pressure checks. With the Baerveldt implant, the ligature is not released until week 4–6 — but by that point you are home and managed by your local specialist. Your surgeon confirms readiness to fly at the final Bangkok follow-up.
Your care coordinator manages all scheduling, hospital transfers, and follow-up logistics. The surgical quote covers the surgeon's fee, drainage implant, donor tissue patch graft, anaesthesia, operating theatre, all post-operative medications, and intensive follow-up appointments during your stay.
Your surgical team prepares a detailed handover report before departure — device type and position, current IOP, capsule status, medication schedule, and recommended follow-up frequency. This goes directly to your home glaucoma specialist. Lifelong monitoring is essential. Tube shunt surgery manages glaucoma; it does not cure it.
Common questions about glaucoma tube shunts
Patient Care Director
Last reviewed: March 25, 2026
Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice. Individual results, recovery times, and suitability vary. Always consult a qualified ophthalmologist before making decisions about treatment.
Speak with our care coordinators to discuss your glaucoma history and find out whether tube shunt surgery could deliver the pressure control other treatments have not achieved.
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