To report the endothelial survival over a 2-year period after 2 techniques of deep lamellar endothelial keratoplasty (DLEK) in the treatment of endothelial dysfunction.

• 实验目的：用两种深板层角膜移植术式治疗角膜内皮功能失代偿的患者，并随访2年，研究其角膜内皮的存活情况。