Treatment Overview
KeraVision INTACS in Korea (Intrastromal Corneal Ring Segments) is a highly specialized vision correction and corneal stabilization procedure designed to reshape the cornea without removing tissue. Developed originally by KeraVision, this technique uses two micro-thin, semi-circular plastic segments implanted in the corneal stroma (the middle layer of the cornea) to gently flatten and regularize its curvature.
INTACS is used to correct mild myopia (nearsightedness) and to treat keratoconus or corneal ectasia, conditions where the cornea becomes abnormally thin and cone-shaped. Unlike LASIK or PRK, INTACS does not involve corneal tissue removal or laser reshaping, making it a safer and reversible option for patients with thin or irregular corneas.
Korean ophthalmology centers are global leaders in femtosecond laser–assisted INTACS implantation, AI-guided corneal topography, and combined INTACS-CXL (Corneal Cross-Linking) therapy, providing long-term corneal stability, improved vision, and reduced need for corneal transplantation.
Purpose & Benefits
Purpose
- Correct mild to moderate myopia by flattening the corneal curvature.
- Stabilize and reshape the cornea in patients with keratoconus or ectasia.
- Improve vision clarity and contact lens tolerance.
- Delay or avoid the need for a corneal transplant.
Benefits
- Tissue-Preserving: No corneal tissue removal or ablation.
- Reversible & Adjustable: Rings can be removed or replaced if needed.
- Corneal Stability: Reduces irregular astigmatism and strengthens corneal shape.
- High Precision: Femtosecond laser channels ensure uniform placement.
- Minimal Downtime: Most patients resume light activities within a day or two.
- Long-Term Vision Improvement: Enhanced optical quality and reduced progression of corneal disease.
Ideal Candidates
KeraVision INTACS in Korea is ideal for:
- Individuals with keratoconus or corneal ectasia not eligible for LASIK.
- Patients with mild to moderate myopia who prefer a reversible solution.
- Those with thin or irregular corneas unsuitable for laser surgery.
- Individuals who want to preserve corneal tissue while improving vision.
- Patients seeking corneal stabilization with minimal invasion.
Possible Risks & Complications
INTACS is a safe and proven procedure, but as with any surgery, temporary or mild complications may occur, such as:
- Slight glare or halos during night vision.
- Temporary light sensitivity or dryness.
- Minor discomfort or irritation in the early healing phase.
- Rarely, segment migration or infection (easily managed with medical care).
Korean clinics minimize these risks using AI-guided placement systems, ultra-sterile techniques, and biophotonic healing therapy for enhanced comfort and safety.
Techniques & Technology Used
Core Techniques
- Femtosecond Laser Channel Creation: Creates a precise tunnel within the corneal stroma for ring placement.
- INTACS Insertion: Two micro-thin, PMMA segments inserted symmetrically to flatten and stabilize the cornea.
- AI-Guided Topography Planning: Ensures perfect arc length, depth, and ring size for each patient.
- Corneal Cross-Linking (CXL) Integration: Strengthens corneal collagen to prevent further thinning (optional).
- Biophotonic Healing Stimulation: Accelerates epithelial regeneration and reduces inflammation.
These advanced techniques ensure precision, minimal trauma, and predictable, long-term vision improvement.
Treatment Process in Korea
Step-by-Step Workflow
- Comprehensive Corneal Evaluation: Includes pachymetry, topography, and 3D tomography scans.
- Surgical Planning: AI systems calculate the ideal ring size, arc, and placement depth.
- Femtosecond Laser Tunnel Creation: Laser creates a circular channel within the corneal stroma.
- Ring Segment Insertion: The INTACS are gently inserted and positioned using microsurgical precision.
- Post-Operative Care: Protective drops applied and healing monitored through digital imaging.
The procedure takes approximately 15–20 minutes per eye and is performed under topical anesthesia for maximum comfort.
Recovery & Aftercare
Aftercare Guidelines
- Use prescribed antibiotic and lubricating drops as directed.
- Avoid rubbing your eyes for at least two weeks.
- Wear protective eyewear in dusty or bright environments.
- Avoid swimming, saunas, or contact sports for two weeks.
- Attend all follow-up appointments for corneal monitoring.
Recovery Timeline
- 24–48 Hours: Vision begins to stabilize; minor sensitivity possible.
- 1–2 Weeks: Improved visual comfort and reduced corneal distortion.
- 1–3 Months: Full visual stabilization and optimal corneal reshaping achieved.
Results & Longevity
Expected Results
- Flattened and more regular corneal surface.
- Improved unaided and best-corrected visual acuity.
- Better tolerance of contact lenses.
- Reduced need for corneal transplant or hard lenses.
Longevity
KeraVision INTACS provide permanent corneal reshaping unless removed or adjusted.
Korean eye centers report success rates of 95–98%, with long-term stability maintained for over 10 years in most patients.
Periodic corneal imaging ensures ongoing clarity and health.
Why Korea Is a Top Destination
- Pioneers in Corneal Ring Implantation: Korean surgeons lead Asia in INTACS procedures for keratoconus and ectasia.
- AI-Precision Surgery: Femtosecond-guided channels and digital mapping ensure unmatched accuracy.
- Comprehensive Corneal Care: Combined CXL + INTACS treatment for superior results.
- Faster Recovery: Advanced healing techniques minimize discomfort and downtime.
- Affordable Excellence: Costs are 40–60% lower than in Western countries.
- International Patient Services: English, Mandarin, and Japanese-speaking teams ensure smooth care.
Korea’s blend of AI technology, microsurgical expertise, and corneal regeneration science makes it a global leader in KeraVision INTACS implantation.
Unique Korean Methods & Technology
- AI-Guided Femtosecond Laser Channels
- 3D Corneal Topography & Custom Arc Design
- Combined INTACS + Cross-Linking Procedures
- Biophotonic Laser Recovery Systems
- PRF (Platelet-Rich Fibrin) Ocular Regeneration Drops
- Oxygen-Enhanced Corneal Cooling
- AI Healing & Stability Analytics
These advancements provide superior precision, biologic safety, and lasting visual improvement.
Cost Range
| Treatment Package | Price (KRW) | Approx. USD | Inclusions |
|---|---|---|---|
| Standard INTACS Implant | ₩2,500,000 – ₩3,500,000 | $1,850 – $2,590 | Single or dual segment insertion + aftercare |
| INTACS + Corneal Cross-Linking | ₩4,000,000 – ₩5,500,000 | $2,960 – $4,070 | Ring insertion + CXL + post-op monitoring |
| Premium AI-Guided INTACS Program | ₩5,800,000 – ₩7,000,000 | $4,290 – $5,180 | Femtosecond INTACS + AI planning + biophotonic healing |
Popular Clinics
- BGN Eye Clinic (Seoul): Specialists in KeraVision INTACS and corneal ring procedures.
- B&VIIT Eye Center (Gangnam): Leaders in AI-guided corneal ring and cross-linking treatments.
- Dream Eye Center (Myeongdong): Experts in femtosecond-assisted INTACS for keratoconus.
- Olim Eye Clinic (Gangnam): Advanced center for corneal stability and customized INTACS therapy.
- Eyereum Eye Clinic (Apgujeong): Pioneers in combined INTACS and regenerative corneal healing.
