Skip to content

Healthy Dogs

Dry Eye (Keratoconjunctivitis Sicca) in Dogs

Font Size
A
A
A

Keratoconjunctivitis sicca is a disorder of the tear glands that results in insufficient aqueous tear production and a correspondingly dry cornea. The tear film contains less of the aqueous layer and more of the mucus layer. In consequence, the classic sign of dry eye is a thick, stringy, mucoid to mucopurulent discharge.Since this type of discharge can also be seen with conjunctivitis, dogs with dry eye may be mistakenly treated for chronic conjunctivitis for long periods with little or no improvement.

In a dog with dry eye, the bright, glistening sheen normally seen in the eye is replaced by a lackluster appearance in which the cornea is dry, dull, and opaque. Recurrent bouts of conjunctivitis are typical. Eventually the cornea becomes ulcerated or develops keratitis. Blindness may ensue.

Recommended Related to Dogs

How to Train a Puppy That Bites

Puppies spend a great deal of time playing, chewing and investigating objects. All of these normal activities involve puppies using their mouths and their needle-sharp teeth. When puppies play with people, they often bite, chew and mouth on people’s hands, limbs and clothing. This kind of behavior may seem cute when your puppy is seven weeks old, but it’s not nearly so endearing when he’s three or four months old-and getting bigger by the day!

Read the How to Train a Puppy That Bites article > >

Dry eye can have several causes. Immune-mediated diseases appear to play a major role. Other cases are idiopathic-that is, the cause is not known. Breeds predisposed to dry eye include Bulldogs, Cocker Spaniels, Lhasa Apsos, West Highland White Terriers, and others.

Some specific conditions that predispose a dog to dry eye include:

  • Injury to the nerves that innervate the lacrimal  glands. A branch of the facial nerve that activates the tear glands passes through the middle ear. Infections in the middle ear can damage this branch, affecting the tear glands as well as the muscles on that side of the face. In this case, the opposite eye is not affected.
  • Injury to the tear glands themselves. Partial or complete destruction of tear glands can follow systemic diseases such as canine distemper, Addison’s disease, and immune-mediated diseases such as rheumatoid arthritis. Bacterial blepharitis or conjunctivitis can destroy the tear glands or occlude the small ducts that carry the tears into the eye. A number of sulfonamide drugs are toxic to tear glands. Tear gland injuries may be partially reversible if the underlying cause is eliminated.
  • Congenital absence of the tear glands is rare, but may occur in the smaller breeds.
  • Removal of the third eyelid or the lacrimal gland attached to it.

Today on WebMD

bulldog in party hat
Breeds with longevity
Doberman Pinscher Clipped Ears
The facts about ear cropping and tail docking.
 
dog with duck in mouth
Which are considered smartest?
boxer dog
What are their health issues?
 
Pit bull looking up
Article
Pets: Is My Dog Normal
Slideshow
 
Dog scratching behind ear
Slideshow
dog catching frisbee
Slideshow
 

Love your pets, hate your allergies?

Get tips for relief.

Loading ...

Sending your email...

This feature is temporarily unavailable. Please try again later.

Thanks!

Now check your email account on your mobile phone to download your new app.

Dog Breed RMQ
Quiz
Lady owner feeding dog
Slideshow
 
pooldle
Slideshow
bulldog in party hat
Slideshow