This page contains links about glaucoma - which has recently been discovered in border collies. The University of New South Wales in Australia are desperately trying to pinpoint the gene which causes this disease so breeders can DNA test their dogs, but this is in its very early stages so probably won't happen for a while yet.
I will update this page as more information becomes available. For now I have listed some of the websites recommended by the University on this disease;
http://www.animaleyecare.net/diseases/glaucoma.htm
http://www.peteducation.com/article.cfm?c=2+1606&aid=439
http://www.blinddogs.com/articles/glaucoma.htm
http://video.google.com/videosearch?client=safari&rls=en&q=glaucoma+in+dogs&oe=UTF-8&um=1&ie=UTF-8&sa=X&oi=video_result_group&resnum=4&ct=title#
http://www.wonderhowto.com/how-to/video/how-to-detect-glaucoma-in-a-dog-or-cat-eye-223900/
http://www.petplace.com/dogs/glaucoma-in-dogs/page1.aspx
http://www.2ndchance.info/glaucoma.htm