My youngest piglet, Baby (appx. 4 years old), was diagnosed about 6 months ago with retinal degeneration. I noticed some time before that her iris seemed to be disintegrating, especially in her left eye. The prognosis is that it will continue to get worse (it has, picking up speed in the last few months), and that her retina might 'detach', which would be extremely painful and necessitate removal of the eye.
She is an inbred pig (uncle and dad were the same pig, as far as I can tell), and the vet suspects that is the cause. So far it does not seem to be bothering her / causing discomfort, and I'm hoping against hope that it will continue that way. But, since the left eye seems to be degenerating so quickly, I'm not holding my breath. And, the right iris is degenerating too -- I'm guessing she'd be okay without one eye, but without either? Ugh.
I haven't been able to find any information about this online, having done multiple searches in the Guinea Lynx archive and across the web, but maybe I'm just not hitting on the right search terms. So I thought I'd try to post. Has anyone experienced this before with one of their little ones? If so, what was the outcome?
Thanks in advance...
- I GAVE, dammit!
While having no eyes at all would remove even light and dark shadows (that I think the blind ones I know of do see), I don't think it would be quite as bad as it sounds.
I hope you can find out some more information though - it must be very worrying.
That particular terminology has never been used on the board (so you would not have found anything). If you search using enucleation I think you'll find some helpful info.
Does anyone know why detached retina would be painful in pigs, and possibly require enucleation? It doesn't in humans. Are you sure this would be required?
Speaking of which, the vet said that once the retina detatched, her eye would bulge and she would be in noticeable pain. I don't know why he said this or where he got the impression this might happen -- maybe he treated a pig in the past who had these same symptoms combined with glaucoma or something else (hopefully) unrelated.
Thanks again, Lynx, for hosting the pictures and directing me to the past threads. Much appreciated. As you all can see from the pictures, she has pea eye and her eyes have always been crustier than most. But otherwise, she's pretty healthy (knock wood). I'm still curious to hear from anyone else who might have experience with this, but thanks again to those who've replied so far and pointed out that a detached retina may not lead to enucleation.
Of course a horse's eye is much bigger than a guinea pig's!
Resurrecting a very old thread since I've gotten several contacts about the photos posted here recently -- thought I'd share what little more I have on the subject (what we've since learned to be osseus metaplasia).
We lost Baby in December '07 to something completely unrelated, and although the degeneration continued, she never appeared to have any pain in her eyes (or sight loss, although that's difficult to ascertain with these critters, of course). I saw signs of o.m. in several of my other older pigs, and have learned not to worry -- I've never had this lead to other problems / pain.
My current piglet, Spud, has o.m. to a much greater degree even than the photos above -- and he is only 2 1/2 years old. Much the same as Baby, we have reason to believe he was inbred. This makes me think that inbreeding and old age are the two primary factors in development of o.m. (He is also overweight and has been diagnosed with a heart murmur, which I also guess has a great deal to do with his lineage.)
The questions I've received re: this thread have been about the photos, so I'd just like to say that anyone is welcome to repost or use them in any way that might be helpful to other pig-slaves.
I do get occasional requests about pics and always direct inquiries to the photographer. I should start a collection of permissions from photographers concerning reuse.
I'm wondering how unusual o.m. is, since I've seen so much of it -- at least some signs of it in something like half the pigs I've taken in in the last ten years or so (3 out of 7). Or, perhaps it's something environmental. I can't imagine what, though -- they've all lived in a well-ventilated area with Carefresh, so unless there's some kind of hidden factor here, I have no idea. Hopefully we'll know more about this someday.