/b/veterinary-nursing-news/posts/new-dna-test-for-glaucoma-causing-defect-in-border-collies The Animal Health Trust (AHT) has announced the launch of a new DNA test for the genetic mutation which causes glaucoma in Border Collies. According to the AHT, glaucoma affects more than a thousand dogs across the UK. Now Border Collie breeders willen-USTelligent Community 10