What Is Tectonic Keratoplasty?

Why Tectonic Keratoplasty Is Done

The main goal is to keep the globe intact and create a safer, more stable corneal surface. It is often considered when medical treatment cannot stop thinning or when the cornea has already developed a hole. Because it prioritizes structural support, the graft size and location are chosen based on the weak area, not only the optical zone.

Common Indications

Tectonic keratoplasty is typically used for conditions that threaten corneal integrity.

• Corneal melt or severe thinning from infection or inflammation
• Descemetocele or impending perforation
• Actual corneal perforation from trauma or ulceration

The procedure may be urgent if the eye is at risk of collapsing or developing severe infection.

How the Procedure Is Performed

The surgeon removes unstable or necrotic tissue and prepares a host bed that can hold a graft securely. Donor tissue is shaped as a patch graft or a larger transplant depending on the size and depth of the defect. The graft is sutured into place, and additional measures such as tissue adhesive or a bandage contact lens may be used when appropriate. Treatment of the underlying cause continues alongside surgery to reduce the risk of recurrent melt.

Recovery and Risks

Healing depends on the cause of thinning, ocular surface health, and postoperative inflammation control. Risks include infection, persistent epithelial defects, graft melt, high astigmatism, and graft failure. Because many cases are already inflamed or infected, outcomes can be less predictable than elective optical transplants. Prompt evaluation is important for increasing pain, redness, discharge, or sudden vision worsening.