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Cherry Eye
A cherry
eye is a prolapse of the gland of the third eyelid. In some cases
the cherry eye can be associated with eversion of the third eyelid
cartilage.
The cause
of the condition is unknown but is common in certain breeds, and
may follow trauma to the eye. It seems to be common in younger dogs.
It is
possible for the problem to develop in both eyes, although the other
eye can develop the problem sometime after the cherry eye initially
presents.
Breeds
predisposed include Basset Hounds, Sharpeis, Maltese Terriers, Beagles,
Bulldogs, Cocker Spaniels, and Rottweilers. The inheritance of the
condition is unknown.
Possible
problems caused by the prolapsed gland can include enlargement of
the gland which can cause conjunctivitis and even ulceration to
the eye.
Treatment
Medical
therapy i.e. drops & ointments are rarely effective. Surgery is
indicated to permanently replace the gland.
Excising
the gland is not recommended as this may cause dry eye. The gland
may produce between 30 to 60% of the tears that protect the eyeball.
The gland
is stitched back into place underneath the eye. This requires a
general anaesthetic and half a day in hospital. After surgery the
third eyelid may sit across the eye for 3 to 7 days.
We find
that in most cases there is very little swelling or postoperative
discomfort after the surgery. In some breeds especially the Basset
Hound the third eyelid may be too large, and it may be necessary
to remodel the third eyelid.
In some
cases this may not become apparent after the swelling related to
the cherry eye and the surgery resolves. The most common problem
we have is eversion of the third eyelid cartilage.
In a
small number of cases the suture that is used may break or pull
through. More surgery will then be required. This happens in less
than 2% of cases.
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