Deep lamellar keratoplasty with trypan blue intrastromal staining

Abstract
This technique was developed to facilitate removal of the deep stromal layers during deep lamellar keratoplasty. A trypan blue 0.02% solution is injected into the stromal fibers, enabling the surgeon to visualize and remove the posterior stromal layers. This decreases the risk of perforation of Descemet's membrane and the endothelium.

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