Coloboma palpebral em felino doméstico: retalho miocutâneo local e transposição da comissura labial

Abstract

The palpebral coloboma is characterized by a congenital alteration in the failure of the partial anatomical formation of the palpebral margins, which has a predilection for the feline species, and may also occur in dogs. Several secondary ophthalmic problems may be associated, such as microphthalmia, persistence of the pupillary membrane, keratitis, corneal vascularization, conjunctivitis, enophthalmos, symblepharon, and is generally marked by a painful process. This paper presents two case reports of bilateral palpebral coloboma in cats, both located in the upper eyelids, both of which were surgically corrected using a blepharoplasty technique using a myocutaneous flap of the lower eyelid, and the other using a myocutaneous transposition of the labial commissure. From these cases, these techniques were compared and discussed in order to verify positive and negative points in relation to the use of each one of them.