My dog has a cyst on his iris... is that going to be harmful in the future?

We went to the vet a while ago asking about a suspicious black dot in my dog's eye. The vet said it was an iris cyst and it's common in brown-eyed dogs, and it's nothing to be worried about. But since that last visit, the cyst has gotten bigger and it seems like it floats around my dog's eye a little. Will this affect his vision in the future? Should we get it removed?





Here are two pictures of what iris cysts look like:





http://www.eyecancerinfo.com/photogaller... (this one is on a human)





http://upload.wikimedia.org/wikipedia/co... (this one is on an animal)

My dog has a cyst on his iris... is that going to be harmful in the future?
Since it seems to float outside of the eye center-the vision part wouldn't be too concerned yet unless the dog develops several and they'll affect his vision. Any surgery should be done only when necessary for it will more than likely involve anesthesia which although mostly safe always carries a risk-same as in humans. I'd just keep a eye on it and not worry unless you feel its beginning or rather when it will(future) affect the vision.The Vet is actually the best one to ask if it will affect the vision-call him/her up they do not mind answering a question on the phone.
Reply:a cyst is very different from cancer so don't worry about that. could effect his vision, and may cause the eye to drip and tear up a lot as well as dry out. Removal shouldn't cost more than $200 and that would be with a full round of checkup and teeth cleaning (my husband's mother recently had the same problem, got the dog the operation and his teeth cleaned as well as his yearly stuff for that price). Good luck!
Reply:Iris cysts usually cause no symptoms, but in large numbers they can cause glaucoma by obstructing the drainage angle of the eye.