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Ophthalmologic

This is a Eyes condition.

Goniodysgenesis and Glaucoma

What is Goniodysgenesis and Glaucoma?

A disease that affects humans and dogs alike; this is an adult-onset, medically manageable condition that causes high intraocular pressure (IOP). If left untreated, it can lead to vision loss. IOP depends on the flow of aqueous humor, the clear fluid that fills the anterior chamber of the eye. Aqueous humor is continuously produced in the eye and must exit through a small tract at the junction of the iris and cornea. Any hindrance to its exit will lead to buildup of aqueous humor and IOP. Symptoms can appear suddenly and quite dramatically. Affected dogs’ pupils may be abnormally dilated and the vessels on the surface of the eye may appear engorged. Your dog may also be averse to bright light, shake their head, or paw at their eyes. In late stages of the disease, you may also notice that your dog appears bug-eyed, due to extremely high IOP. With early diagnosis, glaucoma can be managed with a variety of medical and surgical options. In severe end-stage cases, surgical removal of the affected eyes may be indicated. While both eyes are usually affected with glaucoma, one is often affected before the other. In these cases, many studies indicate that prophylactic treatment of the unaffected eye can significantly prolong its health and vision. Left untreated, the unaffected eye usually develops glaucoma within a year, whereas prophylactic treatment can extend the health of the eye to two and a half times that. Testing your dog for known mutations opens the arena to prophylactic treatment for glaucoma and could extend your dog’s healthy vision.

What are the signs & symptoms that develop in affected dogs?

Symptoms of glaucoma can appear suddenly and quite dramatically. Affected dogs’ pupils may be abnormally dilated and the vessels on the surface of the eye may appear engorged. Your dog may also be averse to bright light, shake their head, or paw at their eyes.

When do signs and symptoms develop?

This is a disease of young dogs.

How do vets diagnose this condition?

Veterinarians perform a complete ocular exam and use a device to measure the intraocular pressure of the eye to diagnosis glaucoma. At risk dogs are often tested at their yearly exam.

How is this condition treated?

With early diagnosis, glaucoma can be managed with a variety of medical and surgical options. In severe end-stage cases, surgical removal of the affected eyes may be indicated.

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