My Dog's Pupils Are of Different Sizes
Mammals (this includes both you and your dog) are all about bilateral symmetry. This includes every aspect of your dog's eyes, and specifically, in this case, his pupils. A particularly interesting aspect of the mammalian oculomotor system is that it responds equally to stimulation. This means that if you shine a light in one of your dog's eyes, both pupils will constrict equally. This is known as the consensual response. So, if you ever notice that your dog's pupils are of unequal size, regardless of the lighting, something is seriously wrong.
What to Look For
Follow the examination techniques outlined in “My Dog's Eyes Are Bulging”.
What to Do
Now ask yourself the following questions:
When to Get to the Vet
If your dog was exposed to a plant, chemical, or medication and you flush his eyes repeatedly, but you don't notice improvement within twenty-four hours, seek the help of a veterinary ophthalmologist.
Text © 2007 by Robert D. "Jake" Tedaldi, D.V.M.
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