Keratoconus patients face a frustrating double problem: their cornea is progressively distorting (the disease itself), and the resulting irregular astigmatism makes it nearly impossible to achieve clear vision with glasses or soft contact lenses. Rigid gas permeable (RGP) lenses or scleral lenses can help, but many patients find them uncomfortable, difficult to maintain, or simply intolerable for all-day wear.
The two-stage approach — corneal crosslinking (CXL) to halt progression, followed by ICL implantation to correct the residual refractive error — has emerged as one of the most effective strategies for restoring functional vision in keratoconus patients. And Colombia makes the combined treatment financially accessible.
Stage 1: Corneal Crosslinking
The first step is always stabilization. Crosslinking strengthens the corneal collagen bonds, preventing further thinning and bulging. Without this step, any corrective procedure risks becoming ineffective as the cornea continues to change shape.
After crosslinking, you'll need to wait at least 6 to 12 months before proceeding to ICL. This waiting period allows the cornea to heal fully, the refraction to stabilize, and your surgeon to confirm that progression has genuinely halted. Repeat corneal topography at three, six, and twelve months documents stability.
Stage 2: ICL for Vision Correction
Once the cornea is confirmed stable, ICL addresses the residual refractive error. Why ICL rather than LASIK or PRK? Because keratoconus corneas are inherently thin and biomechanically weak — removing additional tissue with a laser (as LASIK and PRK do) would further compromise an already fragile structure. ICL adds a lens inside the eye without touching the cornea, making it the only safe refractive surgery option for most keratoconus patients.
The toric version of the EVO Visian ICL can correct up to 4 diopters of astigmatism in addition to high myopia, addressing both components of the visual distortion that keratoconus causes. For patients who've spent years struggling with rigid contacts or living with blurred vision, the improvement in visual quality is often life-changing.
Trip Planning: One Trip or Two?
| Approach | Pros | Cons |
|---|---|---|
| Two separate trips (6–12 months apart) | Each trip is short (4–5 days); time to confirm stability between stages | Two sets of flights and accommodation costs |
| One extended trip (rare) | Possible only if crosslinking was done elsewhere and stability is confirmed | Requires pre-existing CXL + documented stability |
Most patients plan two trips. The first trip (four to five days) covers the crosslinking procedure. After returning home, you'll have follow-up appointments with your local ophthalmologist at three, six, and twelve months to document corneal stability via topography. Once stability is confirmed, you return to Colombia for the ICL implantation (four to five days).
Some patients who had crosslinking performed elsewhere (in the US or another country) and already have documented stability can schedule their ICL trip to Colombia as a single visit. Bring your complete records — topography series, pachymetry, refraction history — so the Colombian surgeon can make an informed decision without repeating the stabilization waiting period.
Keratoconus? There's a Path to Clear Vision
Connect with a corneal specialist in Colombia to discuss the CXL + ICL two-stage approach. Free virtual evaluation to assess your candidacy.
- Stage 1 (crosslinking) stabilizes the cornea; Stage 2 (ICL) corrects residual refractive error
- Wait 6–12 months between stages to confirm stability
- Combined cost in Colombia: $3K–$5K per eye vs $8K–$13K in the US
- ICL is chosen over LASIK/PRK because it doesn't remove tissue from an already-thin cornea
- Toric ICL can correct up to 4 diopters of keratoconus-related astigmatism