Issue Description Medical condition in which the eyelids fold
inward. It is very uncomfortable, as the eyelashes rub against the
cornea constantly. Entropion is usually caused by genetic factors and
may be congenital. Trachoma infection may cause scarring of the inner
eyelid, which may cause entropion.
Symptoms Most pet owners notice that the affected eye is
partially held shut and has excessive tearing. Both eyes are usually
affected simultaneously. Breed related entropion usually affects dogs
under 1 year of age.
Diagnosis A thorough examination of the eye is performed
to make certain there are no other painful conditions present that are
causing an eyelid spasm. If the eye has no other problem, then a
diagnosis of inherited entropion is made.
Treatment Most dogs with entropion require surgical
correction, which involves removing a small portion of the skin to
tighten the eyelid. More than one surgical procedure may be necessary.
Temporary eyelid tacking may be used in very young dogs. Definitive
surgical correction is often delayed until the dog has a more mature
head conformation at 6 months of age. If uncorrected, subsequent
corneal ulceration, pigmentation, and scarring may produce vision
Entropion In Dogs Entropion has been documented in most dog
breeds, although there are some breeds (particularly purebreds) that
are more commonly affected than others. These include the Akita, Pug,
Chow Chow, Shar Pei, St. Bernard, Cocker Spaniel, Boxer, Springer
Spaniel, Labrador Retriever, Cavalier King Charles Spaniel, Neapolitan
Mastiff, Bull Mastiff, Great Dane, Irish Setter, Rottweiler, Poodle
and particularly Bloodhound. The condition is usually present by six
months of age. Entropion can also occur secondary to pain in the eye,
scarring of the eyelid, or nerve damage. The upper or lower eyelid can
be involved, and one or both eyes may be affected. When entropion
occurs in both eyes, this is known as "bilateral entropion."
Upper lid entropion involves the eyelashes rubbing on the eye, but the
lower lid usually has no eyelashes, so hair rubs on the eye. Surgical
correction is used in more severe cases. A strip of skin and
orbicularis oculi muscle are removed parallel to the affected portion
of the lid and then the skin is sutured. Shar Peis, who often are
affected as young as two or three weeks old, respond well to temporary
eyelid tacking. The entropion is often corrected after three to four
weeks, and the sutures are removed.