Well, I know there is an episode of House (season 1) that deals with something like this.
I've heard that high cholesterol can be a contributing factor to a ring, but it is usually found in people over 40. However, it can still occur in younger people. An ophthalmologist would know better than me, of course. :)
Another factor I've heard of that could cause a ring has something to do with liver damage. Not to be the cause of alarm, but it is something worth considering if the yellow band is concentrated or if it expands.
Good luck!
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Found a good answer here:
http://www.madsci.org/posts/archives/1999-09/938582079.Me.r.html
It basically says that it is due to unequal distribution of pigment in the eye and is normal, more common in people with blue and brown eyes.
Wilsons disease is the condition scripted into house, it is caused by the bodys inabilty to bind copper. The copper builds up in the liver and kidneys and damages them. copper rings are seen around the iris, not the pupil, due to their deposition. And there is no mistaking copper for yellow in these cases so dont worry :)
australia
onion rings.
An Iris is a flower as well as part of the eye (it is the coloured ring around your pupil).
I believe you are talking about the Northern Ring snake.
it means the kilate number
The Iris.
iris
The colored bit is called the iris, and is actually a muscle. it expands and contracts to make the pupil (black bit) either smaller or larger, depending how much light there is. the brighter the outside would is, the smaller the pupil gets.
arcus An opaque arc or ring around the peripheral cornea, this represents fatty or oily deposits in the cornea. It is usually seen in elderly people and is called arcus senilis. Arcus juvenilis is seen in people younger than 40 and often indicates high levels of cholesterol in the blood. Always see a Professional for diagnosis!
arcus An opaque arc or ring around the peripheral cornea, this represents fatty or oily deposits in the cornea. It is usually seen in elderly people and is called arcus senilis. Arcus juvenilis is seen in people younger than 40 and often indicates high levels of cholesterol in the blood. Always see a Professional for diagnosis!
The only way to tell if a baby starling is male or female is by testing, such as blood tests. If you do not want to do that, you will have to wait until the starling is older and watch its behavior.
The iris.