Silicone Oil Injection, Endolaser and Retinectomy — Cost, Top Hospitals & Success Rates | MyMedicPlus

Silicone oil injection, endolaser photocoagulation, and retinectomy are vitreoretinal surgical techniques used — usually in combination — to treat complex retinal detachments that cannot be managed by simpler approaches such as scleral buckling or short-term gas tamponade alone. Together they form part of the most technically demanding tier of posterior segment eye surgery, reserved for cases where the retina has become contracted, scarred, or otherwise difficult to flatten and reattach.

Pars plana vitrectomy (PPV) is the foundation of all three interventions: the vitreous gel is removed to eliminate traction on the retina and provide intraocular access. Once the retina is mobilised:

• Endolaser photocoagulation applies focused laser energy (typically 532 nm green or 810 nm infrared diode) through a fibre-optic probe introduced into the vitreous cavity, creating chorioretinal burns that seal all retinal breaks and demarcate atrophic areas to prevent recurrent detachment.
• Relaxing retinectomy (peripheral circumferential retinectomy) cuts and removes a band of contracted, stiffened peripheral retina that cannot be flattened by conventional manipulation due to proliferative vitreoretinopathy (PVR), massive haemorrhage, or severe trauma. Removing the offending tissue allows the central retina to relax and lie flat against the retinal pigment epithelium.
• Silicone oil injection fills the vitreous cavity with a long-acting, transparent, inert tamponade agent that holds the retina in apposition for months while laser scars consolidate. Unlike gas bubbles (sulphur hexafluoride, perfluoropropane), silicone oil does not resorb and can support the retina for 3–6 months or longer in the most complex cases.

The procedure is performed under general or local anaesthesia with intravenous sedation and typically lasts 1–3 hours. Silicone oil must be removed in a planned second operation once adequate retinal stability is confirmed — usually 3–6 months after the primary surgery.

This combined surgical approach is reserved for severe posterior segment pathology where standard vitreoretinal techniques alone are unlikely to achieve lasting retinal reattachment:

• Proliferative vitreoretinopathy (PVR): The most common indication. PVR is characterised by migration and proliferation of retinal pigment epithelial cells and glial cells across the retinal surface and under the retina, forming contractile membranes that pucker and detach the retina. Grade C and D PVR (Retina Society Classification) with stiff, immobile retina typically requires retinectomy and silicone oil.
• Complex rhegmatogenous retinal detachment: Detachments with multiple breaks, giant retinal tears (GRTs — circumferential tears spanning 90 degrees or more), or detachments involving the posterior pole where gas tamponade is inadequate or poorly tolerated.
• Diabetic tractional retinal detachment: Fibrovascular proliferation in advanced proliferative diabetic retinopathy can create traction bands pulling the retina off the pigment epithelium. Silicone oil may be used when traction cannot be fully relieved or when the patient cannot maintain prone positioning required for gas tamponade.
• Traumatic retinal detachment: Blunt or penetrating ocular trauma causing multiple retinal breaks, vitreous haemorrhage, and retinal incarceration in a wound. Silicone oil provides stable long-term support after retinal mobilisation and repair.
• Hypotony with retinal pathology: Severe ocular hypotony (very low intraocular pressure) secondary to ciliary body damage can be stabilised with silicone oil, which mechanically supports the intraocular structures.
• Failed prior retinal surgery: Recurrent retinal detachment following prior vitrectomy, scleral buckle, or pneumatic retinopexy, particularly when PVR has developed as a complication of the initial procedure.
• Endophthalmitis with retinal detachment: Selected cases of severe intraocular infection complicated by retinal detachment may benefit from silicone oil tamponade to support retinal reattachment during the infectious period.

Patient selection for silicone oil vitrectomy with endolaser and retinectomy requires careful assessment of ocular anatomy, systemic health, and functional prognosis:

Ocular Criteria Favouring Surgery

• Complex retinal detachment involving the posterior pole or macula with reasonable visual potential in the affected eye
• Proliferative vitreoretinopathy grade C or higher with stiff, contracted peripheral retina that cannot be managed with gas tamponade
• Giant retinal tear or multiple breaks requiring broad laser support beyond gas capabilities
• Inability to maintain appropriate positioning (face-down or head-tilted) required for intraocular gas tamponade due to physical disability, work demands, or sleep apnoea
• Need for bilateral same-session surgery or early post-operative air travel

Factors Influencing Patient Selection

• Duration and extent of macular detachment (shorter duration correlates with better visual recovery)
• Status of the fellow eye (surgery is more aggressively pursued when the affected eye is the better-seeing eye)
• Presence of phakic lens — the crystalline lens may be removed (combined vitrectomy-phacoemulsification) if it obstructs surgical access or if silicone oil-related cataract is anticipated
• Intraocular pressure and angle anatomy — open-angle glaucoma and emulsified silicone oil can complicate management
• Patient's ability to comply with post-operative positioning and follow-up requirements

Relative Contraindications

• Eyes with no light perception and no surgical potential (although surgery may still be offered for hypotony or pain relief)
• Severe uncontrolled systemic disease that substantially elevates anaesthetic risk
• Active or poorly controlled ocular surface disease that may compromise wound healing

A detailed pre-operative assessment includes B-scan ultrasonography (to assess extent of detachment and vitreous pathology when the fundus is not visible), wide-field fluorescein angiography, optical coherence tomography of the macula, and intraocular pressure measurement.

The combined vitrectomy, endolaser, retinectomy, and silicone oil procedure is tailored to each patient's specific intraocular anatomy and pathology. Key steps and technical variations include:

Pars Plana Vitrectomy

Three self-sealing microincisions (typically 23-gauge or 25-gauge instruments) are made 3.5–4 mm posterior to the limbus through the pars plana. The vitreous cutter removes the vitreous gel under direct visualisation using a wide-angle viewing system. Posterior vitreous detachment is induced if not already present, and epiretinal and sub-retinal membranes are carefully peeled using end-gripping forceps and micro-scissors to relieve all tangential traction.

Retinectomy

When contractile peripheral retinal tissue prevents adequate retinal mobilisation even after complete membrane removal, a circumferential or segmental retinectomy is performed using the vitreous cutter or scissors. The incision is typically placed 1–2 disc diameters posterior to the ora serrata. A 180-degree retinectomy releases most cases; in extreme PVR, 270- or 360-degree retinectomy (total retinectomy) is occasionally required.

Fluid-Air Exchange and Endolaser

After the retina has been mobilised, a perfluorocarbon liquid (PFCL, such as perfluoro-n-octane) may be used to stabilise the posterior retina while peripheral membranes are removed. Fluid-air exchange then unfolds and flattens the retina. Endolaser burns are applied to all visible breaks, areas of thin retina, the retinectomy edge, and the optic disc margin to create adhesive barriers. A confluent treatment of 2–3 laser spot widths from all retinal breaks and the retinectomy margin is standard practice.

Silicone Oil Injection

Silicone oil (typically 1,000 centistoke viscosity for most cases, or 5,000 centistoke heavy oil for inferior pathology) is injected through one of the trocar cannulae to replace the vitreous cavity and tamponade the retina against the pigment epithelium. The oil fills the eye to approximately 90–95% capacity, with a small perfluorocarbon liquid bubble retained in some centres to support the inferior retina in the early post-operative period.

Silicone Oil Removal

Planned secondary surgery to remove the silicone oil is performed 3–6 months after the primary operation once retinal stability is confirmed on examination. Earlier removal may be indicated if emulsification, elevated intraocular pressure, or keratopathy develop.

Combined vitrectomy with endolaser, retinectomy, and silicone oil tamponade achieves retinal reattachment in conditions that were historically associated with very poor visual prognosis:

• Retinal reattachment rates: Primary anatomical success (retina attached with oil in situ) is achieved in approximately 70–90% of complex retinal detachments with PVR using modern surgical techniques. Final attachment rates after oil removal and any necessary revision procedures reach 75–85%.
• Visual improvement: Even in severe cases, meaningful visual improvement — sufficient for orientation, detecting movement, or reading large print — is achieved in 40–60% of patients when the macula can be successfully reattached. Pre-operative macular status is the strongest predictor of final visual acuity.
• Prevention of phthisis bulbi: In eyes at risk of phthisis (end-stage shrinkage and blindness from severe hypotony), silicone oil maintains intraocular volume and pressure, preserving the eye and avoiding the need for enucleation or evisceration in many cases.
• Flexibility for special populations: Unlike intraocular gas, silicone oil does not restrict air travel, does not require strict head positioning for extended periods, and is compatible with general anaesthesia for other concurrent procedures — important advantages for elderly, disabled, or medically complex patients.
• Manageable second surgery: Silicone oil removal is a much simpler and lower-risk procedure than the primary vitrectomy, typically performed as a day case under local or general anaesthesia through a single microincision.

Prognosis is significantly influenced by the extent of PVR at the time of surgery, duration of macular detachment, and surgeon experience with complex vitreoretinal cases. Centres performing high volumes of complex retinal surgery consistently report better outcomes.

Vitreoretinal surgery with silicone oil is among the most demanding procedures in ophthalmic surgery, and the underlying disease itself carries a guarded visual prognosis. Patients should be counselled on the following risks:

Intraoperative Risks

• Iatrogenic retinal breaks introduced during membrane peeling or retinectomy
• Intraoperative haemorrhage from neovascular fronds in diabetic cases or from choroidal vessels
• Posterior capsule rupture if combined phacoemulsification is performed simultaneously

Post-Operative Complications

• Recurrent retinal detachment: The most common complication, occurring in 15–30% of silicone oil cases due to ongoing or recurrent PVR, new retinal breaks, or incomplete laser treatment. May require further vitreoretinal surgery.
• Silicone oil emulsification: Over time (typically after 6–18 months), silicone oil breaks into fine droplets that can migrate to the anterior chamber, trabeculae, and subretinal space, causing secondary glaucoma and corneal decompensation. This is the principal reason planned removal is essential.
• Elevated intraocular pressure: Occurs in approximately 10–30% of eyes with silicone oil; managed with topical or systemic pressure-lowering medications or early oil removal.
• Cataract formation: Contact between silicone oil and the crystalline lens rapidly accelerates cataract formation in phakic patients (within 6–24 months). Combined phacoemulsification is often performed simultaneously for this reason.
• Corneal decompensation (band keratopathy): Silicone oil migrating to the anterior segment can cause calcium deposits in the cornea and irreversible endothelial cell loss, particularly in aphakic eyes.
• Subretinal silicone oil migration: Uncommon; can occur through a large retinal break and may require additional surgery to remove the oil from the subretinal space.
• Glaucoma: Both elevated pressure from silicone oil and hypotony after oil removal can lead to permanent optic nerve damage; regular monitoring is essential.
• Persistent ocular hypotony: Despite surgery, severely damaged ciliary bodies may not recover adequate aqueous production, resulting in chronic low pressure and progressive visual loss.

Patients must understand that the goal in complex PVR cases is often preservation of useful vision and prevention of phthisis, rather than restoration of normal sight.

Post-operative management after silicone oil vitrectomy is intensive, and close compliance with follow-up is critical to long-term outcomes:

Immediate Post-Operative Period (Days 1–7)

The eye is patched overnight. Intraocular pressure is checked within 24 hours of surgery to identify early hypertension from silicone oil over-fill. Topical antibiotic, steroid, and cycloplegic drops are prescribed. Patients experience blurred vision, mild discomfort, and a sensation of 'oil' moving in the visual field, which gradually diminishes.

Positioning

If the retinectomy or major break is in the superior retina, face-up (supine) positioning for 1–2 weeks post-operatively helps silicone oil float upward to support the superior retina. For inferior pathology, heavy silicone oil (higher density than vitreous fluid) provides inferior tamponade without face-down positioning — an important advantage in elderly patients.

Visual Recovery

Vision is significantly blurred with silicone oil in the eye due to refractive changes. A silicone oil contact lens may partially correct this temporarily. Visual recovery is gradual, often continuing for 6–12 months after oil removal as the macula heals and post-operative inflammation settles.

Scheduled Follow-Up

Outpatient review is required at 1 day, 1 week, 1 month, 3 months, and prior to oil removal. Each visit includes visual acuity measurement, intraocular pressure assessment, slit-lamp biomicroscopy, and indirect ophthalmoscopy. Wide-field fundus photography and OCT imaging monitor macular structural recovery and retinal attachment status.

Silicone Oil Removal

A planned second operation to remove the silicone oil is scheduled at 3–6 months post-operatively. After oil removal, intraocular pressure may fluctuate and visual acuity may temporarily worsen before stabilising. Long-term surveillance for glaucoma and re-detachment continues annually.

The combined vitreoretinal procedure is one of the more costly ophthalmic surgeries due to its complexity, specialised instruments, and the requirement for a planned second procedure (oil removal). Costs include the primary vitrectomy, consumables (silicone oil, laser, PFCL), and the oil removal surgery.

Estimated Costs by Country

• United States: USD 8,000–20,000 for the primary procedure (facility, surgeon, anaesthesia); silicone oil removal adds USD 3,000–8,000
• United Kingdom (private): GBP 5,000–12,000 per procedure
• Australia: AUD 6,000–15,000 per procedure (private)
• India: USD 1,200–3,500 for the primary procedure at accredited centres; USD 600–1,500 for oil removal
• Thailand: USD 2,500–6,000 for the primary procedure
• Turkey: USD 2,000–5,500
• Singapore: SGD 6,000–15,000

Factors Affecting Cost

• Complexity of pathology: PVR requiring retinectomy is technically more demanding and time-consuming than straightforward vitrectomy, increasing operating room, surgeon, and anaesthesia costs
• Consumable costs: Silicone oil, perfluorocarbon liquids, endolaser probes, and premium vitrectomy systems (23- or 25-gauge) contribute significantly to case cost
• Combined procedures: Simultaneous phacoemulsification and intraocular lens implantation adds procedure cost but avoids a separate surgical episode
• Number of procedures required: Recurrent detachment may necessitate additional vitreoretinal surgery, each adding incremental cost
• Surgeon subspecialty training: Complex vitreoretinal surgery should only be performed by a fellowship-trained vitreoretinal specialist; their higher fees reflect the advanced skill and training required

Medical tourism to India, Thailand, or Turkey can reduce the total cost of primary vitrectomy and oil removal to USD 2,000–5,000 — a 70–80% saving compared to US private rates — while accessing internationally trained vitreoretinal surgeons at JCI-accredited centres.

For less severe retinal detachments or specific anatomical configurations, less invasive alternatives to silicone oil vitrectomy may be considered:

Intraocular Gas Tamponade

Short-acting sulphur hexafluoride (SF6, lasting 2–3 weeks) or longer-acting perfluoropropane (C3F8, lasting 6–8 weeks) are injected into the vitreous cavity instead of silicone oil. Gas is preferred for retinal detachments without PVR that can be managed with head positioning, as it avoids the need for oil removal surgery. Gas is contraindicated if the patient cannot position appropriately, needs to fly, or requires general anaesthesia soon after surgery.

Pneumatic Retinopexy

An office-based procedure in which a small gas bubble is injected into the vitreous through a fine needle, combined with cryotherapy or laser. Suitable only for simple, superiorly placed single retinal breaks in phakic patients without significant vitreoretinopathy. Not applicable to PVR or complex detachments.

Scleral Buckle

A silicone band or explant is sutured externally around the sclera (the white of the eye) to indent the eye wall and relieve vitreoretinal traction. Effective for uncomplicated retinal detachments, particularly in younger phakic patients with peripheral breaks, but cannot address severe intraocular traction or PVR.

Combined Scleral Buckle and Vitrectomy

In moderate-complexity cases — particularly those with inferior pathology, previous failed scleral buckle, or moderate PVR — combining an external buckle with vitrectomy provides both intraocular membrane relief and external retinal support, reducing the reliance on silicone oil tamponade.

Heavy Silicone Oil vs. Standard Silicone Oil

Heavy silicone oil (densiron 68, oxane HD) is denser than vitreous fluid and sinks to the bottom of the eye, providing inferior tamponade that would otherwise require face-down positioning with standard (lighter) oil. It is particularly useful for inferior giant retinal tears, inferior retinectomy, or patients who cannot position face-down.

Selection among these alternatives depends on the complexity and location of the retinal pathology, the degree of PVR, patient factors, and the surgeon's experience and institutional capabilities.