Skip to content

Healthy Dogs

Blindness in Dogs

Font Size
A
A
A

Any condition that blocks light from getting to the retina impairs a dog’s vision. Corneal diseases and cataracts fall into this category. Glaucoma, uveitis, and retinal diseases are other important causes of blindness in dogs.

Most causes of blindness will not be evident on general observation of the eye itself. But there are some signs that suggest a dog may not be seeing as well as before. For example, a visually impaired dog may step high or with great caution, tread on objects that normally are avoided, bump into furniture, and carry his nose close to the ground. Dogs who normally catch well may suddenly start to miss objects thrown to them. The inactivity of older dogs is often attributed simply to old age, but failing eyesight may also be a cause.

Recommended Related to Dogs

Parvo (Parvovirus) in Dogs

Canine parvovirus is a highly contagious viral disease that can produce a life-threatening illness. The virus attacks rapidly dividing cells in a dog’s body, most severely affecting the intestinal tract. Parvovirus also attacks the white blood cells, and when young animals are infected, the virus can damage the heart muscle and cause lifelong cardiac problem

Read the Parvo (Parvovirus) in Dogs article > >

Shining a bright light into the dog’s eye to test for pupil constriction is not an accurate test for blindness, because the pupil can become smaller from a light reflex alone. This doesn’t tell you whether the dog is able to form a visual image.

One way to test eyesight is to observe the dog in a dark room in which the furniture has been rearranged. As the dog begins to walk about, see if he moves with confidence or hesitates and collides with the furniture. Turn on the lights and repeat the test. A completely blind dog will perform the same way on both tests. A dog with some sight will show more confidence when the lights are on. Performance tests such as these give qualitative information about eyesight, but the degree of impairment can only be determined by veterinary examination.

A diagnosis of blindness or irreversible vision loss is not a catastrophe. The fact is that most dogs, even those with normal eyesight, do not really see very well. They rely to a greater extent on their keen senses of hearing and smell. These senses take over and actually become more acute as eyesight fails. This makes it relatively easy for visually impaired dogs to get around in areas they know. However, a blind dog should not be turned loose in unfamiliar surroundings or he could be injured. In the house, try to avoid moving furniture, because your dog will have a “mental map” of where things are. When left outdoors, confine a visually impaired dog to a fenced yard or run. Walking on a leash is safe exercise. The dog learns to rely on his owner as a “seeing-eye person.”

It is important to be aware of impending blindness while the dog is still able to see. This allows time for retraining in basic commands such as “stop,” “stay,” and “come.” When the dog actually does go blind, obedience training can be a lifesaver.

WebMD Veterinary Reference from "Dog Owner's Home Veterinary Handbook"

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