BoardVitals Intra-Op Practice Test

In keratoplasty, which is a surgical procedure to transplant corneal tissue, the choice of suture is crucial for the healing process and maintaining the structural integrity of the cornea. The 10-0 nylon suture is particularly well-suited for this procedure due to its thinness, strength, and biocompatibility.

Nylon sutures are monofilament, which means they have a smooth surface that reduces friction against the tissues during placement and healing. This is essential in the delicate environment of the eye where minimizing tissue irritation and inflammation is vital to achieving optimal outcomes. The 10-0 size indicates a very fine gauge, allowing for precise closure of the corneal incision and minimizing the risk of astigmatism postoperatively.

In contrast, the other suture options do not provide the same benefits for such a delicate area. For instance, 5-0 silk, while strong, is thicker and braided, which can create more tissue drag and potentially lead to increased inflammation or scarring. Similarly, 4-0 Vicryl, being a multifilament suture, may also provoke a greater inflammatory response, and its absorption over time may not suit the long-term needs of a corneal transplant. The