Screening Scheme Description

BVA/KC/ISDS Non Schedule A Eye Scheme - Gonio

The Kennel Club now record eye scheme results of breeds that are not listed on Schedule A. Breeds on Schedule A are known to inherit a list of eye diseases, as there is enough scientific information to support this. Breeds on Schedule B lists breeds in which these conditions are currently only suspected of being inherited, and are therefore listed as ‘under investigation’.

Gonioscopy is an eye examination, separate from the routine eye examination (BVA/KC/ISDS Eye Scheme), done to detect glaucoma predisposition (how likely the eye is to develop glaucoma). The gonioscopy test should be done every three years.

Details about the disease

Glaucoma is characterised by pressure on the eye, which is caused by inadequate drainage of fluid from inside the eye. If left untreated the optic nerve will be permanently damaged, resulting in blindness.

Primary glaucoma is an inherited condition. Secondary glaucoma is caused by other eye diseases (e.g. lens luxation) that lead to improper drainage of fluid from inside the eye

Clinical signs

Clinical signs include cloudiness at the front of the eye, red eyeballs, vision loss and dilated pupil. Your dog may rub their eyes, squint and flutter their eyelids.

How it is inherited

The precise modes of inheritance have not been determined for affected breeds, but clear breed and line predisposition indicate a genetically determined cause, albeit with a likely complex mode of inheritance.

Where can I find more information about primary glaucoma and Gonioscopy?

An information leaflet can be found at


Copyright © The Kennel Club Limited 2020. The unauthorised reproduction of text and images is strictly prohibited.