Investigator Initiated, Prospective Study of Xenia Corneal Lenticule

This study is evaluating a corneal lenticule called the Xenia Corneal Lenticule as an alternative to corneal transplant surgery for people with severe keratoconus or post-LASIK ectasia. Keratoconus is a condition where the cornea (the clear front of the eye) progressively thins and bulges outward into a cone shape, causing distorted and blurry vision. Post-LASIK ectasia is a similar complication that can occur after laser eye surgery. In severe cases, a corneal transplant is usually the final option, but it is a major surgery with a long recovery. The Xenia lenticule is a small piece of donor corneal tissue that can be surgically inserted into the patient's cornea to strengthen and reshape it — potentially avoiding or delaying the need for full corneal transplantation. This study tracks vision outcomes, safety, and patient satisfaction over time. You may be eligible if: - You are between 18 and 79 years old - You have severe keratoconus or severe post-LASIK ectasia - You prefer to avoid corneal transplant surgery - You are generally in good health with a life expectancy of at least 2 years - You have removed contact lenses for at least 1 week (soft) or 2 weeks (hard) before surgery You may NOT be eligible if: - You have had a previous corneal transplant or corneal implant - You have other eye diseases that may affect the surgery - You have intraocular pressure outside the normal range (below 10 or above 21 mmHg) - You have active eye inflammation or infection - You are on immunosuppressive therapy - You have had a blood transfusion in the past 12 months - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.