Cherry Eye (Third Eyelid Gland Eversion)

Dogs and cats have three eyelids: an upper lid, a lower lid, and one that is attached inside the other lids at the inside corner of the eye socket.

This third eyelid serves to protect the eye from injury by closing over the eye to give a second covering of the eye.

On the inside of this third eyelid, there is a small lymph node and small gland that produces tears. The tears produced by this gland aid in lubrication of the eye.

A condition exists where this small gland becomes inflamed and swollen. Once swollen, the tissue of this gland then protrudes out over the free edge of the third eyelid.

This condition is sometimes called “cherry eye” because the reddened, swollen tissue resembles a cherry. It is also sometimes referred to as a "hare".

The swelling may wax and wane, resulting in an intermittent appearance of the "cherry eye" in some dogs.

Causes Of Cherry Eye:

The cause of this condition is not known. An infection or allergic reaction may sometimes cause the condition. There is also a tendency for the condition to occur in the other eye at some future date.

Diagnosis Of Cherry Eye:

Diagnosis is by physical examination. The condition is unique in appearance and usually easily diagnosed.

Treatment Of Cherry Eye:

Treatment of this condition is surgical.

The gland can either be excised and removed completely, or it can be reattached to the inside of the third eyelid.

If the gland is excised completely, there is the possibility of complications later in life resulting in keratoconjunctivitis sicca ("dry eye").

If the gland is reattached inside the third eyelid, there is the possibility of recurrence. Generally, however, this is the surgical treatment of choice because it is not likely to cause problems for your dog later in life.