Keratoplasty

Keratoplasty refers to corneal transplantation procedures designed to restore transparency, structural stability, and visual function in patients with severe corneal disease. As a cornerstone topic at a global Ophthalmology Conference, this field highlights surgical innovation, graft survival optimization, and advances in lamellar and endothelial techniques. Corneal transplantation remains one of the most successful forms of tissue transplantation, yet it continues to evolve with refinements that improve precision and reduce complications. Modern approaches focus on selective layer replacement, minimizing rejection risk, and enhancing long-term visual outcomes in patients affected by advanced corneal transplantation indications.

Indications for keratoplasty include keratoconus with scarring, corneal dystrophies, infectious keratitis with stromal damage, bullous keratopathy, trauma, and graft failure. Traditional penetrating keratoplasty replaces the full thickness of the cornea, but contemporary practice increasingly favors lamellar procedures that target only diseased layers. Deep anterior lamellar keratoplasty preserves healthy endothelium, while Descemet membrane endothelial keratoplasty selectively replaces dysfunctional endothelial cells. These selective techniques reduce immunologic rejection risk and accelerate visual rehabilitation.

Preoperative evaluation involves corneal imaging, endothelial cell count analysis, and assessment of ocular surface stability. Donor tissue quality, preservation methods, and eye banking standards are essential to ensure graft viability. Intraoperative precision using femtosecond laser technology and microkeratomes enhances graft-host alignment and wound integrity. Postoperative management includes corticosteroid therapy, infection prevention, and careful monitoring for rejection signs such as redness, pain, or decreased vision.

Emerging innovations in tissue engineering are expanding the scope of keratoplasty. Bioengineered corneal substitutes, decellularized scaffolds, and cell-based regenerative therapies aim to reduce reliance on donor tissue. Artificial corneal implants, or keratoprostheses, provide alternatives in high-risk graft failure cases. Advances in immunomodulatory therapy are improving graft survival rates, particularly in inflamed or vascularized corneas.

Global disparities in donor tissue availability remain a significant public health concern. International eye banking collaboration and improved preservation techniques are critical to expanding access. Through continued surgical refinement and translational research, keratoplasty remains a transformative intervention for restoring vision in patients with advanced corneal disease.