Glossary

Screening Scheme Description

BVA/KC/ISDS POAG

The POAG (Primary Open-Angle Glaucoma) test, like the Gonioscopy test, is separate from the routine eye examination (BVA/KC/ISDS Eye Scheme).

Details about the disease

POAG is caused by a small increase in the fluid pressure within the eye and gradually results in blindness.

Clinical signs

The disease is normally seen in dogs aged between 3 and 6 years of age, but a later onset is also possible. Both eyes are affected, usually simultaneously and often the first indication of the presence of the disease is impaired vision or enlargement of the eye. However a close examination of the eye in early disease may reveal congestion of blood vessels in the normally white part of the eye, wobbliness of the lens and a reduced response of the pupil to bright light. It is a subtle disease and pain or discomfort is not a normal feature: measurement of the fluid pressure within the eye is the essential part of any professional examination.

How it is inherited

The disease is described as an autosomal recessive condition. This means that a dog must inherit two copies of an abnormal gene (one from its mother and one from its father) before its health is affected. A dog that inherits only one copy of the abnormal gene (from its mother or its father) will have no signs of the disease, but will be a carrier and may pass the gene on to any offspring.

For advice on breeding for health, why not visit our information guide www.thekennelclub.org.uk/media/451962/breeding_health.pdf

Which laboratories test of this condition

A list of laboratories and DNA tests can be found at the following link

http://www.thekennelclub.org.uk/item/315

 

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