Causes of Glaucoma in Dogs
There are two main types of glaucoma–primary and secondary.
Primary glaucoma is a hereditary disease, and is seen most often in American Cocker Spaniels, English Cocker Spaniels, Basset Hounds, Beagles, Australian Shepherds, Chow Chows, Samoyeds, Shar Peis, Labrador Retrievers and Nordic breeds (Huskies, Elkhounds, etc.). In primary glaucoma, there’s a developmental defect of the drainage structures within the dog’s eye. Since the eye can’t drain properly, the pressure inside the eye slowly builds up to dangerous levels–usually by middle age, if not before.
Primary glaucoma usually begins in one eye, but in most dogs it eventually involves both eyes, leading to complete blindness. The second eye is usually affected from 5 months to two years after the first eye.
Secondary glaucoma in dogs occurs when something happens in the eye that prevents normal fluid flow and drainage. Some of these problems may be:
Any pet owner will tell you their dog is a member of their family unit. The importance of maintaining good health is imperative in allowing your pet to live a long and happy life. The following steps provide a foundation to build a long and happy life with your family companion.
Hemangiosarcoma is quite common in dogs, and more so in certain breeds of dogs including German Shepherds and Golden Retrievers. It also occurs in cats, but is much more rare. Dogs with hemangiosarcoma rarely show clinical signs until the tumor has become very large and has metastasized. Typically, clinical signs are due to hypovolaemia after the tumor ruptures, causing extensive bleeding. Owners of the affected dogs often discover that the dog has hemangiosarcoma only after the dog collapses.
The tumor most often appears on the spleen, right heart base, or liver, although varieties also appear on the skin or in other locations. It is the most common tumor of the heart, and occurs in the right atrium. Here it can cause right-sided heart failure, arrhythmias, pericardial effusion, and cardiac tamponade. Hemangiosarcoma of the spleen or liver is the most common tumor to cause hemorrhage in the abdomen. Hemangiosarcoma of the … Read the rest