Entropion and Ectropion

By Diane Morgan
Author of The Basset Hound Owner's Survival Guide

Entropion is a genetically based disease of the eyelid. It is common in Basset Hounds and
other wrinkled face dogs. Short snouted dogs like Pugs can also be victims. Dogs with entropion
have eyelids that "roll in" or invert. Both the upper and lower eyelid can be affected, but it
is most common on the lower. Ectropion, having eyelids that "roll out," is the opposite
condition to entropion. It is not unknown for a dog to have one eyelid with entropion, and
one with ectropion -- on the same eye!

Entropion can be very serious in some dogs, even causing corneal ulcers. These dogs are
also in a lot of pain. Some can suffer vision loss. Mildly affected animals don't appear to be in
pain, and in fact, if the dog has a very wrinkled face, you might not even notice the condition.
Usually, however it causes tearing of the eye, blinking, and head rubbing. After all, the
hairs of the eyes are rubbing across the surface of the eye, and that doesn't sound very
comfortable.

Treatment nearly always involves a simple surgical procedure. The doctor will take out a
bit of tissue near the affected eyelid; then stitch it back together in a "mattress stitch."
Removing the correct amount is critical. If the vet takes out too much, the dog
can acquire ectropion. In a few cases, where the skin is extremely wrinkled, several surgeries
may be required! The good news is that your afflicted dog probably doesn't need to see
a veterinary ophthalmologist. Most general practitioners are equipped to deal with this
common surgery. In fact, your dog can probably have the surgery as an outpatient! The
dog will need general anesthesia, however.

Ectropion is usually much less severe than entropion, but it is common in Bassets and other
breeds with sagging lower eyelids. Affected dogs have constant conjunctivitis. Since the Basset
breed standard specifies that the red part of the eye (the haw) should be prominent, some
ectropion is almost unavoidable in show dogs. I personally would like to see our standard
changed to eliminate this element -- or at least not make it a requirement. I feel that the
constant exposure of the haw to environmental dirt is not healthy. (I don't care for the look
of it, either, but that's another matter.)

At any rate, serious cases must be correctly surgically -- this time by a veterinary
ophthalmologist. The surgery is much less common than that for ectropion, and unless your
vet has had experience with it, go see a specialist.

Any dog who has had surgery for either entropion or ectropion is disqualified from showing
in AKC or UKC shows. These are inherited conditions which should not be passed on.

Canine Health Index

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