Eye Testing

Primary angle closure/closed angle glaucoma Primary Angle Closure Glaucoma (PACG)/Primary Closed Angle Glaucoma (PCAG) is significantly associated with defective development of the drainage angle which is termed goniodysgenesis (gonio = angle, dysgenesis = defective development), also known as Pectinate Ligament Dysplasia (PLD) or Pectinate Ligament Abnormality (PLA).

Goniodysgenesis is inherited in complex fashion in several breeds and is tested for using a technique called gonioscopy. It was originally believed that the degree of goniodysgenesis did not progress after birth and so a ‘one-off’ test before breeding was advised for dogs of certified breeds. However, recent research has provided evidence of progression of goniodysgenesis with age in several breeds, including the Dandie Dinmont Terrier.  In consequence, the advice on gonioscopy has been updated for all breeds in which gonioscopy is performed.

It is advised that for Schedule A breeds gonioscopy should be carried out every 3 years, unless any evidence to the contrary emerges. The first test can be performed in dogs from 6 months of age onwards and current advice is that gonioscopy is performed at approximately 1, 4 and 7-8 years of age. Repeat testing should provide much needed longitudinal information about the risk of developing glaucoma in later life and, in conjunction with Breed Health Coordinators and assistance from the Kennel Club Health Team, will enable breed-specific recommendations to be developed.

Please note that the Southern Dandie Club recommends eye testing every two years for breeding stock.

How do I go about having my dogs examined?

Performing gonioscopy requires certain expertise and specialised equipment and it is for these reasons that gonioscopic examinations are not a routine part of the eye scheme and are not available from every member of the BVA/KC/ISDS Eye Panel. See attached ISDS Eye Scheme – Panel of Examiners at September 2018.  However, when telephoning a panellist to book an appointment, owners who wish to have gonioscopy performed should check whether this is available.

The Kennel Club would like to inform you that the Dachshund Club is holding a Canine Health Schemes (CHS) eye testing clinic at the Club’s Show on Saturday 16th November at The Kennel Club Building, Stoneleigh Park, Stoneleigh, Kenilworth CV8 2LZ.  All breeds are welcome, but subsidised fees are offered for Dachshunds at just £20, courtesy of a generous subsidy offered by the charity Dachshund Health UK.

To book, or for further information, please contact Daphne Graham on 01335 350248 or email: jadagdachshunds@hotmail.com.


The Kennel Club would like to inform you of a Canine Health Schemes (CHS) Eye Testing Clinic being held by James Oliver on Saturday 30th November 2019 at Gayton Village Hall, 25 Hillcrest Rd, Gayton, Northampton, NN7 3HG.

To book, please call Emily at CHS on 02079086380.

For more information on eye testing, please visit the BVA website or email chs@bva.co.uk