Charlie had full cataracts when we adopted him -- he's had them since he was about 2 and he's just 7 now. Apparently the SOONER cataracts are removed the better.
In normal cataract surgery in a dog they make a tiny incision at the top of the cornea (the colored part) -- there is a membrane "envelope" that holds the natural lens in the eye (so it doesn't just float all over).
Normally they are able to make a tiny slit in that envelope/membrane and break up the cloudy lense and remove it and then insert the new prosthetic lense in it's place.
In Charlie's case, because the cataracts were so old (and they are inflammatory to the eye because they are more rigid I guess) over the course of the 5 years they scarred that membrane too much. So they had to remove both the membrane and the lens.
That's not a bad thing -- as it stands he'll have a bit blurry vision close up but further away it will be very clear -- the analogy the vet gave me this afternoon is if he were human he'd have to hold the newspaper about 4 feet away but he'd have no problem driving at all
LOL
He's very sore tonight -- he thinks the Cone of Shame SUX and he feels a bit queasy (he 86'd food when he first came home).
I've given him some chamomile tea in a syringe to settle the tummy and a dose of Nux vom. (a homeopathic also to settle the gut) -- cos I've got to give him pred (pill) and cephalexyn (capsule) and I don't want to do that on an empty stomach. (he hasn't eaten since last night -- they fed him a BIT this afternoon there)
But he's doing well. There was far more trauma to the eye than normal because they had to remove those membranous envelopes from both eyes -- so right now he's got his eyes SHUT. He's not trying to see -- and I'm not surprised. That's a lot of cutting inside the eyes - even tho the eyes feel pain differently, that's a LOT of inflammation. That's why he's got the abx (the ceph) -- literally to ward off infection.
He goes tomorrow morning for a vet check up -- again in a week and then one a couple more weeks later.
David and I will have to arrange being home mid-day because he needs one set of drops mid-day to keep the pressure down in the eye (Glaucoma is always a risk but there is a heightened risk immediately after surgery.
My Mom's comment to me on the phone tonight was that both she and my Dad had the lens membranes removed from THEIR eyes during their cataract surgeries so "no big deal there". Mostly that lens is used for close-up vision.