anerior uveitis is an inflammation in the front part of the eye usually caused by auto-immune diseases, ifnections, or trauma. The inflammation can cause elevated intraocular pressure (glaucoma) by damage to the fluid outflow from the anterior part of the eye. I can understand anterior uveitis causing cataracts and possibly causing glaucoma but glaucoma usually doesn't cause cataracts as far as I know. Glaucoma does cause loss of vision as you said through damage to the optic nerve. The anterior uveitis is treated differently than glaucoma or cataracts. I had a siberian husky that had cataracts from a relatively early age but they never seemed to develop to the point of serious vision problems.
My 2 cents, -figure I would chime in considering all the engineers around here always expound on issues- which is good, I just felt the need to throw my profession into the mix too <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />
Wish things had been different for your dog. Our 8 y/o german shepherd died suddenly 2 3 weeks ago from what was likely a tumor bleeding in his abd.