EN
In this study, 121 dogs with lachrymal duct obstructions were treated surgically. For diagnostic and therapeutic purposes, dogs with inherited atresia and a narrowing of the lachrymal punctum were treated by cutting off triangular fragments of conjunctiva microsurgically right over them. In cases where the lachrymal duct was absent, dogs were operated with the insertion of a silicone implant. Eight weeks after surgery the lachrymal duct was opened. In all dogs, follow-up observations confirmed their full recovery.