Ectropion

From Dog
Ectropion in a Basset Hound[1]

Ectropion, defined as an outward rolling of the eyelid, is relatively infrequent in dogs compared with entropion[2].

This condition is commonly observed as a genetic condition in certain breeds such as bassetts and bloodhounds[3].

Ectropion also occurs following excessive blepharoplasty repair of entropion, and in association with severe facial scarring due to burns[4] and dermatopathies such as squamous cell carcinoma[5], facial pyoderma, demodicosis[6] and chronic third-eyelid eversion (cherry eye)[7].

Clinical affected dogs have visibly everted eyelid(s), and common complications include conjunctivitis, corneal ulcers and keratoconjunctivitis sicca.

Diagnosis is based on ophthalmic examination of the eye.

Treatment usually requires wedge-resection of the eyelid to tighten the eyelid commissures[8].

References

  1. Pet MD
  2. Barnett KC (1976) Comparative aspects of canine hereditary eye disease. Adv Vet Sci Comp Med 20:39-67
  3. Bouw J (1991) Genetic eye defects in the dog. Tijdschr Diergeneeskd 116(18):898-905
  4. Hamilton HL et al (1998) Surgical reconstruction of severe cicatricial ectropion in a puppy. J Am Anim Hosp Assoc 34(3):212-218
  5. Longaker MT et al (1997) Deep-plane cervicofacial "hike": anatomic basis with dog-ear blepharoplasty. Plast Reconstr Surg 99(1):16-21
  6. Donaldson D et al (2005) Surgical management of cicatricial ectropion following scarring dermatopathies in two dogs. Vet Ophthalmol 8(5):361-366
  7. Mañé MC et al (1990) Results and histological development of various surgical techniques for correcting eversion of the third eyelid in dogs. Histol Histopathol 5(4):415-425
  8. Lackner PA et al (2001) Techniques for surgical correction of adnexal disease. Clin Tech Small Anim Pract 16(1):40-50