Ha!  What a coincidence!  I was just on that page, I did another search and found that the name is Kayser-Fleischer Ring as can be read in your link, and came here precisely to post that.  I'm new at this copper toxicity thing, only read about it for the first time last week, and despite of my earlier reluctance I may have to give this NB thing a try, in fact I sort of am already because my liver acted up so bad 3 days ago I could hardly eat and then instinctively reduced proteins and fats.  I just had a new "crash" that started last week of which I seem to be recovering very slowly and in the past 2 days have been very depressed and today got actually pretty weepy, something that's described as a symptom of dumping copper.  But I've had things with chocolate in them, even today (guilt trip...) and chocolate contains copper, in fact I'd switched to dark chocolate, which contains more than the MDR of copper in 3 oz., years ago, and there would be periods of times when I ate it nearly every day (other times would not want chocolate at all).  I also have kept a container of cocoa powder at home and even was drinking it in hot water sometimes during the cold months instead of coffee, which I cannot handle, but stopped because it was really not having the expected effect.  Pehaps that and other copper containing foods plus the gluten eating is what contributed to my last major crash 3+ months ago, I'd say that ignorance is certainly NOT bliss!

Oh, I forgot the link I had wanted to post here which has pics of eyes of different colors:  qjmed.oxfordjournals.org/content/early/2010/04/28/qjmed.hcq065.full

Hey, don't mess with my "angel", it's actually a "butterfly fairy"...

I'ts OK, I wasn't really asking for advice on copper toxicity, was just curious to see if others had noticed that and "Uat" mentioned that this has been discussed before and it's common among others with AF.

Yes, you are right, the term used in the show was "poisoning" and the ring around the iris was very pronounced, mine is thin but it's there.

Apparently you didn't read the Wikipedia page, so I'm pasting a paragraph here: 

Kayser-Fleischer rings are a sign of Wilson's disease, which involves abnormal copper handling by the liver resulting in copper accumulation in the body and is characterised by abnormalities of the basal ganglia of the brain, liver cirrhosis, splenomegaly, involuntary movements, muscle rigidity, psychiatric disturbances, dystonia and dysphagia. The combination of neurological symptoms, a low blood ceruloplasmin level and KF rings is diagnostic of Wilson's disease.^[1]

^{While they're probably referring to a more advanced stage, notice that the one thing in common is that the liver is affected, and I've always seen liver disfunction associated with hypoglycemia and/or AF.  But I just noticed something else, which is what I originally thought I was told about my "rings":}

Other causes of KF rings are cholestasis (obstruction of the bile ducts), primary biliary cirrhosis and "cryptogenic" cirrhosis (cirrhosis in which no cause can be identified).^[1]

In any case, I'm sure there are different stages of copper "overload".  And btw, in the TV show, which I know must not be taken as "truth", when the patient asked how that had happened to her the doc said there was no good way to know, that she'd probably had  been accumulating it most of her life.  From what I've read so far, it's actually the liver's inability to produce sufficient ceruloplasmin in the first place which causes the copper build-up, and of course, like some other conditions the cause also facilitates the progression of the disease by producing a vicious circle of sorts.