Corneal Tissue Addition for Keratoplasty (CTAK™ ) is an innovative procedure for the treatment of keratoconus. It involves the use of custom tissue inlays, designed to optimize corneal flattening, improve visual acuity, and add thickness to the cornea.
Get Started with CTAKCTAK is the latest advancement in keratoconus treatment, focused on accuracy and precision for both patients and surgeons. This innovative procedure involves the use custom tissue inlays, designed to optimize corneal flattening, improve visual acuity, and add thickness to the cornea.
Using a Ziemer Neo Z8 Femtosecond Laser, CorneaGen processes tissue to the precise parameters for each patient. The tissue is sterilized, packaged and shipped with custom surgical plan options.
CTAK is designed to improve visual outcomes, greater surgical precision, and faster recovery times.
Moderate keratoconus: 50D-75D.
Patients with ectasia need more care and can schedule a consultation.
Long-term clinical outcomes of
keratoplasty using gamma-irradiated
corneal lenticules
Corneal tissue addition keratoplasty for the treatment of keratoconus
Adding Corneal Reshaping to Your Practice by Kamran M. Riaz, M.D. | Ophthalmology Management
Best CTAK candidates have worse visual acuity, central cones by Alex Young | Helio
CTAK for Keratoconus by Evan Schoenberg, MD | Eyes On Eyecare
Corneal Customization by Joshua Black, OD and Neha Srinivasan, OD | Review of Optometry
We’re excited to help you take the first step toward offering this innovative procedure by offering a short 15-20 minute online training course for surgeons interested in offering CTAK in their practice.
The online CTAK training will:
Have a patient who may be a candidate for CTAK? Send us the case. CorneaGen partners with you from patient evaluation and customized surgical planning through training, tissue preparation and your first procedure.
If you have a patient with keratoconus or corneal ectasia who may benefit from CTAK, CorneaGen can help you evaluate the case before treatment is scheduled.
If you have questions about patient selection or the CTAK process, contact our team.
Send the patient’s corneal imaging and required clinical information to CorneaGen for review.
The submitted diagnostic information will be used to begin developing personalized CTAK surgical plan options based on the patient’s individual corneal anatomy and treatment needs.
Patient information can be securely submitted through the CorneaGen Online Surgeon Portal or sent to CTAK@CorneaGen.com.
CorneaGen will provide customized surgical plan options for your consideration. Review the options and select the plan you determine is most appropriate for your patient.
While your patient’s case moves forward, CorneaGen will help prepare you and your team to offer CTAK.
Online training covers patient selection, surgical planning and procedural technique, with hands-on wet lab opportunities available at select ophthalmology conferences. A CorneaGen Surgical Product Specialist can help guide you through the onboarding process and prepare your practice for your first CTAK procedure.
CTAK onboarding must be completed before customized tissue can be ordered.
Once onboarding is complete and you have selected a surgical plan, submit the CTAK Order Form along with a copy of the selected surgical plan to tissue@corneagen.com.
Please allow at least three weeks from order submission to delivery for customized tissue processing and quality controls.
With onboarding complete and your customized tissue and surgical plan in place, you’re ready to complete your first CTAK surgery.
Your personalized CorneaGen customer and sales team will coordinate with you throughout the process, help ensure your tissue is delivered on time, and answer any questions leading up to your procedure. You’ll also have access to CorneaGen resources and ongoing support as you begin incorporating CTAK into your practice.
CorneaGen will help your practice prepare for CTAK as you move through the onboarding process, including:
CorneaGen offers world-class surgeon educational offerings including Webinars, Surgical footage, and pearls videos.
We partner with leading surgeons and experts to share insights and pearls from their successes and experiences.
Learn something today!
From Referral to Recovery: CTAK and the OD:MD Relationship
In this recorded CorneaGen webinar, Dr. Katie Greiner, Dr. William...
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CTAK for Keratoconus: Dr. Rahul Tonk’s Full Presentation at AAO 2025
Learn about CTAK (Corneal Tissue Addition Keratoconus) in this full...
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CTAK: Surgical and Clinical Pearls Booth Talk at ASCRS 2025
CTAK creator, Peter Hersh, M.D., is joined by Elizabeth Davis,...
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If you have had any complications occur in your recipients, we ask you please file a report with us so that we may comply with EBAA and FDA regulations.
CorneaGen’s labs maintain the highest levels of quality through review by the U.S. Food and Drug Administration. For more information, please contact our Quality Assurance and Regulatory Affairs Department at (877) 682-8502.
