Descemetocoele and acute perforation of the cornea are a common eye problem in dogs. Lamellar keratoplastyand nictitating membrane flap were used in 20 dogs with progressive ulceration of the cornea (21 eyes). Sixteen dogswere brachycephalic or had a physiological exophthalmos, and 4 dogs were dolichocephalic. In all cases, after flapremoval, the transplant showed edema and vascularization. In addition, the transplant became granulated, though thisgranulation gradually cleared up later on. As for the post-operative complications, focal wound dehiscence wasobserved in one case and pigmentation was seen in all cases, though the pigmentation was more pronounced in thebrachycephalic dogs. Enucleation of an eye was performed in 1 dog because of glaucoma. In 17 of the dogs, completerestoration of vision occurred, while in 2 dogs the vision remained diminished due to pigmentation. Lamellarkeratoplasty is an adequate technique in the treatment of deep ulcerations of the cornea in dogs.