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Third Eyelid In Dogs: Health Issues
What Is The Third Eyelid In Dogs? What Does It Do?
The third eyelid, or nictitating (winking) membrane is a protective
extra eyelid at the inner corner of each eye, next to the nose.
When needed, the third eyelid can sweep across the eyeball, like a
windsheild wiper, to help remove debris.
Haws (Prominent Third Eyelid):
The
third eyelid can become more prominent due to many causes - some
involving the eye - but sometimes due to conditions affecting the whole
body such as intestinal worms in pups. The third eyelid appears
as a "skin" covering the inner part of the eye, usually about a quarter
to half of the eye being covered. Dog owners often mistakenly
report that their dog has a "growth covering the eye".
Treatment:
A
prominent third eyelid is usually only one sign that there is eye
disease or body disease. A veterinary examination determines the
cause.
If The Third Eyelid Is Persistantly Prominent, Should It Be Removed Surgically?
Absolutely not. The third eyelid is vital for a dog's healthy
vision and should never be removed. If the third eyelid is
removed, tear production is reduced and later the eye can become dry
and very sick.
Pink Third Eyelid:
Lack of dark pigment makes a third eyelid appear prominent as it
contrasts with the eyeball behind it. Although tatooing and -
alas- removal has been advocated, it is much better to breed the
problem out.
Cherry Eye In Dogs:
There is a gland at the base of the third eyelid. Normally, this
gland is small and tucked well out of our sight. The gland may
fall out of position and bulges out at the corner of the eye.
This swelling is termed "cherry eye". Breeds predisposed include
Cocker Spaniels, Bassetts and Beagles. In mild cases of cherry
eye the gland of the third eyelid can be returned to its correct
position by the owner with the fingers. Surgery is usually
needed, however. The gland is stitched back into position and not
removed, as it is vital for tears.
Above: "Cherry Eye" or Everted Third Eyelid In Dogs.