Treatment Overview
iStent Implantation in Korea is a minimally invasive glaucoma surgery (MIGS) designed to enhance the natural outflow of aqueous humor and lower intraocular pressure (IOP) in patients with mild to moderate open-angle glaucoma. The iStent is one of the world’s smallest medical implants—placed inside Schlemm’s canal to create a permanent channel that improves fluid drainage.
Korean ophthalmology centers excel in MIGS procedures, utilizing AI-guided angle visualization, OCT-based canal mapping, and precise micro-incision techniques to ensure safe, accurate iStent placement with rapid recovery.
Purpose & Benefits
Purpose
- Lower IOP by improving the natural drainage through Schlemm’s canal.
- Reduce or eliminate the need for glaucoma medications.
- Provide a safe, early intervention option for mild to moderate glaucoma.
- Complement cataract surgery to enhance overall vision outcomes.
Benefits
- Minimally Invasive: Tiny micro-incision with minimal tissue disruption.
- High Safety Profile: One of the safest glaucoma procedures available.
- Fast Recovery: Most patients resume normal activities quickly.
- Medication Reduction: Many individuals reduce or discontinue eye drops.
- Durable Pressure Control: Restores physiological outflow pathways.
- Compatible With Cataract Surgery: Often implanted during phacoemulsification.
Ideal Candidates
iStent implantation in Korea is ideal for:
- Patients with mild to moderate primary open-angle glaucoma (POAG).
- Individuals undergoing cataract surgery who also have glaucoma.
- Patients who want to reduce their reliance on glaucoma medications.
- Those intolerant to or non-compliant with daily eye drops.
- Individuals needing a safe, early-stage surgical option.
Possible Risks & Complications
Although iStent is very safe, potential risks include:
- Mild postoperative inflammation
- Transient IOP fluctuation
- Stent obstruction (rare)
- Stent malposition (very rare due to imaging guidance)
- Temporary blurred vision
- Small risk of hyphema (blood in the anterior chamber)
Korean clinics minimize complications with high-resolution angle imaging, AI-assisted stent positioning, and precision micro-surgical tools.
Types of iStent Procedures in Korea
iStent (First Generation)
Single stent to enhance trabecular outflow.
iStent inject
Two small stents implanted to provide multiple drainage pathways.
iStent inject W
Improved version with enhanced visualization and implantation control.
iStent With Cataract Surgery
Performed during phacoemulsification for better combined results.
iStent Hybrid Procedures
Combined with SLT or other MIGS (e.g., canaloplasty, goniotomy) for additional control.
Surgical Techniques
Angle-Based Imaging
OCT and gonioscopy allow accurate visualization of Schlemm’s canal.
Micro-Incision Entry
A tiny corneal incision provides access to the angle.
Stent Implantation
Stent inserted directly into Schlemm’s canal using a precise injector.
AI-Guided Positioning
Ensures optimal placement at areas of highest outflow resistance.
Multiple Stent Placement (iStent inject)
Two stents positioned to maximize the outflow network.
Post-Implant Verification
Surgeon confirms proper seating and patency using real-time imaging.
Treatment Process in Korea
Step 1 – Comprehensive Evaluation
Includes OCT imaging, IOP measurement, visual fields, and angle assessment.
Step 2 – Surgical Planning
Choice of iStent model and placement strategy determined.
Step 3 – iStent Implantation
Stents implanted during cataract surgery or as a standalone MIGS procedure.
Step 4 – Immediate Aftercare
Anti-inflammatory drops initiated; IOP checked within hours.
Step 5 – Ongoing Monitoring
Follow-ups to ensure proper stent function and pressure reduction.
Treatment Duration: 10–15 minutes (often combined with cataract surgery)
Setting: Outpatient micro-surgery suite
Recovery & After-Care
After-Care Guidelines
- Use prescribed antibiotic and anti-inflammatory drops.
- Avoid eye rubbing and heavy exertion for a few days.
- Wear protective eyewear after surgery.
- Continue glaucoma medications only if advised.
- Attend all follow-up visits for stent monitoring.
Recovery Timeline
- Days 1–3: Mild irritation or redness; early IOP reduction begins.
- Week 1: Vision stabilizes; inflammation decreases.
- Weeks 2–4: Stents fully functional; optimal IOP reduction achieved.
- Months 1–3: Long-term stability established.
Results & Longevity
Expected Results
- 20–30% IOP reduction for many patients.
- Significant reduction in glaucoma medication use.
- Improved outflow through natural pathways.
- Excellent outcomes when combined with cataract surgery.
Longevity
- iStent results often last many years, with long-term stability observed in most patients.
- Korean imaging-guided placement enhances durability.
- Can be combined with additional MIGS later if needed.
Why Korea Is a Top Destination
- Leaders in MIGS technology with extensive iStent expertise.
- AI-enhanced angle analysis improves accuracy of stent placement.
- Advanced imaging systems (OCT, UBM) ensure precise canal targeting.
- High surgical success rates with low complication profiles.
- Patient-centered care emphasizing safety, comfort, and long-term outcomes.
Unique Korean Innovations
- Multi-stent optimization using AI flow mapping.
- Hybrid iStent + canaloplasty or GATT strategies.
- OCT-based verification during and after surgery.
- Enhanced injector control systems for perfect placement.
- Predictive modeling of long-term IOP behavior.
Cost Range (Indicative Estimate)
| Treatment Package | Price (KRW) | Approx. USD | Inclusions |
|---|---|---|---|
| iStent Standalone MIGS | ₩2,500,000 – ₩3,800,000 | ~$1,900 – $2,900 | Single or dual stents + follow-up care |
| iStent With Cataract Surgery | ₩4,500,000 – ₩6,500,000 | ~$3,400 – $4,900 | Phaco + iStent placement + extended aftercare |
| iStent inject W Premium Package | ₩5,500,000 – ₩7,000,000+ | ~$4,100 – $5,300+ | Dual stents + advanced imaging + AI planning |
Popular Clinics in Korea
- B&VIIT Eye Center (Seoul) – Experts in MIGS and iStent implantation.
- Dream Eye Center (Seoul) – Specialists in angle-based MIGS procedures.
- BGN Eye Clinic (Busan & Seoul) – Advanced imaging-guided iStent placement.
- Glory Seoul Eye Clinic – Leaders in MIGS + cataract combined surgery.
- K-Cure Vision Center (Gangnam) – Innovators in AI-assisted MIGS techniques.
