Since dilated pupils can signal brain or nerve problems, you won't have to wait long to see your vet. In fact, he will probably recommend that you come in right away.
Following an eye exam, your vet may recommend x-rays or blood tests to detect internal problems that could be putting pressure on the nerve. He will also measure the pressure inside your pet's eyes, which is a test for glaucoma.
"Don't be discouraged if the diagnosis is glaucoma," says Dr. de Papp, "because today we treat the disease with great success." Pets with glaucoma are usually treated with pills or eyedrops that reduce pressure in the eye.
If your pet has swallowed a toxic substance, your vet may induce vomiting to remove the poison. If she is showing other symptoms of poisoning, like seizures, your vet may give her medication to control the spasms.
If an infection is causing the problem, there is a good chance that antibiotics -- and possibly medications to reduce swelling -- will clear it up. But if the problem is a brain tumor or fluids accumulating near the eye, your pet may need surgery to relieve pressure on the nerve. After that, her eyes should quickly return to normal.
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