Reshape Your Cornea & Improve Vision

The cornea is the transparent, dome-shaped front surface of your eye that provides most of its focusing power. To produce a clear vision, it must maintain a smooth, symmetrical curvature. Conditions such as keratoconus can weaken the cornea's collagen framework, causing it to bulge forward and become irregular. This distortion creates irregular astigmatism that cannot always be fully corrected with glasses or contact lenses.

CTAK, or Corneal Tissue Addition for Keratoplasty, is an advanced corneal procedure that reshapes the eye by implanting precisely customized donor corneal tissue into laser-created channels within the cornea. Rather than removing tissue, CTAK adds tissue to restore a more regular corneal contour, reduce irregular astigmatism, and improve vision while preserving as much of your natural cornea as possible.

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What Are the Benefits of CTAK?

CTAK offers a unique approach to treating irregular corneal shape by adding, rather than removing, corneal tissue. It can help improve corneal symmetry while preserving as much of your natural anatomy as possible. Potential benefits of CTAK include:

  • Preservation of healthy corneal tissue
  • Reduction of irregular astigmatism
  • Improvement in corneal shape and symmetry
  • Better quality of vision and visual function
  • Greater comfort with specialty contact lenses
  • Maintenance of corneal structural integrity
  • Compatibility with corneal cross-linking when appropriate
  • Potential to delay or reduce the need for corneal transplantation
  • Minimally invasive treatment with a tissue-preserving approach

Am I a Candidate for CTAK?

CTAK is meant for carefully selected patients with corneal irregularities that affect vision. If glasses or contact lenses no longer provide clear, comfortable vision, this tissue-preserving procedure may help improve the shape of your cornea and reduce irregular astigmatism. You may be a candidate for CTAK if:

  • You have keratoconus or another corneal ectatic disorder
  • You have blurred, distorted, ghosted, or double vision caused by an irregular cornea
  • You have irregular astigmatism that cannot be corrected with glasses or contact lenses
  • You have sufficient corneal thickness to safely accommodate tissue implantation
  • You have a clear central cornea without significant scarring that would limit visual results
  • You want a tissue-preserving alternative that reshapes rather than removes tissue
  • You are in good overall eye health without active infection or ocular inflammation
  • You understand the benefits, limitations, and recovery process of the procedure

Your candidacy is determined through an eye examination using advanced diagnostic technology, including corneal topography and tomography, pachymetry, and an evaluation of your vision, corneal anatomy, and overall ocular health. These findings allow our specialists to determine whether CTAK is the most appropriate treatment for your individual needs.

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Why Choose The Vision Institute?

  • Leaders in Corneal Care- Internationally recognized corneal expertise backed by academic leadership and research.
  • Precision-Driven Planning- Advanced diagnostic imaging guiding highly individualized treatment decisions.
  • Collaborative Expertise- Seven renowned ophthalmologists working together to solve complex eye conditions.
  • Personalized Every Step- Concierge-level care tailored to your vision, goals, and long-term eye health.

Your Complete CTAK Experience

Consultation

Your evaluation begins with a comprehensive assessment of your corneal structure and visual function. Advanced corneal topography, tomography, pachymetry, and wavefront analysis create a detailed three-dimensional map of your cornea. Your ophthalmologist also measures corneal thickness, evaluates disease stability, and determines whether CTAK is the most appropriate treatment based on your anatomy and visual goals.

Procedure

On the day of treatment, your eye is numbed with anesthetic drops. A femtosecond laser is used to create precise channels within the cornea without removing tissue. Customized donor corneal segments are then carefully implanted into these channels to reshape the cornea and reduce irregular astigmatism. The procedure is typically completed in less than an hour.

Recovery

You can expect mild irritation, light sensitivity, and blurry vision during the first several days as your cornea heals. Prescription eye drops help prevent infection and control inflammation while the implanted tissue integrates with your cornea. Follow-up visits allow your surgeon to monitor healing and determine whether additional treatments or specialty lenses are needed.

Results

Visual improvement occurs gradually as the cornea stabilizes and adopts a more regular shape. Many patients experience reduced irregular astigmatism, improved visual quality, and better tolerance of specialty contact lenses. Every cornea heals differently, but you can expect continued improvements for several months after the procedure.

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CTAK Frequently Asked Questions

Is CTAK a treatment for keratoconus?

Yes. CTAK was developed to help treat vision problems caused by keratoconus. By adding customized donor corneal tissue, the procedure reshapes the cornea to reduce irregular astigmatism and improve its optical quality while preserving your own corneal tissue.

Will CTAK cure keratoconus?

No. CTAK does not cure the underlying disease or stop its progression. If your keratoconus is progressing, your ophthalmologist may recommend corneal cross-linking to strengthen the cornea before or in combination with CTAK. The goal of CTAK is to improve corneal shape.

Will I still need glasses or contact lenses?

Possibly. Many patients experience better vision after CTAK, but some still benefit from glasses or specialty contact lenses to achieve their sharpest possible vision. Your visual outcome depends on the severity of your corneal irregularity and how your eye heals.

What are the risks of CTAK?

As with any corneal procedure, CTAK carries potential risks, including infection, inflammation, delayed healing, glare, persistent visual distortion, and implant-related complications. Your surgeon discusses these risks with you before recommending treatment.

How long do the results last?

The structural changes created by CTAK are intended to provide long-term improvement, although your results depend on the stability of your underlying corneal condition. Regular follow-ups help monitor your cornea and ensure your vision remains as stable as possible.

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