Question 1

what does iris do?

Accepted Answer

Light control: The iris, a circular (donut shaped) muscular ring of tissue in the front of the eye, opens and closes in response to the degree of outside light.  It also functions as a portion of the focusing capacity of the eye.  It's other role is as a part of your allure given its color and structure.

Question 2

how big is the  iris in millimeters?

Accepted Answer

Iris size: Iris outer dimensions= 11 x 12 mm; iris inner dimensions= 3 mm.

Question 3

why is the outside of my iris darker?

Accepted Answer

Just color: Is it uniformly dark and symmetrical?   Then do not worry, its just the coloration of the iris.  The outside is thicker and denser.  If you have just localized darkness then you need to see an ophthalmologist.

Question 4

what can cause a ring around my iris?

Accepted Answer

Probably cornea : The ring is probably around the cornea,appearing like it is around the iris. It is called an arcus and is benign. Can represent high cholesterol on occasion.

Question 5

what is the dark line around the iris?

Accepted Answer

Normal: If present in both eyes it is a normal variation of pigmentation of iris.  If it is new and increasing there could be some diseases that cause deposits on the cornea that may look like dark lines on the iris.

Question 6

what does the ring around the iris mean?

Accepted Answer

Ring around iris.: Most likely the "ring" in in the cornea and represents a deposition of lipid which is very common as we get older, it has been named " arcus senilis". However there are other pathological states principally affecting the liver that may cause such ring, example being the keyser-fleisher ring, a deposition of copper in the cornea. It is commonly seen in wilson's disease and obstructive liver disease.

Question 7

what is the definition or description of: iris?

Accepted Answer

Colored part of eye: The iris is a structure within the eye that helps reduce the amount of light that reaches the retina.  The iris is known as the colored part of the eye, and can be blue, brown, or any color or combination of colors in between.  The iris is the portion of the eye that responds to light stimulation.

Question 8

please describe these white speckles in my iris?

Accepted Answer

Normal variation: Iris color comes in a terrific variety - part of the beauty of being alive.  Sometimes this is reflected with whitish deposits, really structural elements, on the iris surface.  Enjoy them as part of human variation - they are not pathologic.

Question 9

can big black dots on my green iris mean anything?

Accepted Answer

Iris dots: Black dots on the iris are most likely due to iris nevi or pigment variation.  Rarely, pigmented lesions of the iris can be neoplastic in nature.  Many other issues can cause iris pigment changes including topical and systemic medications.  The dark spots should be monitored closely.  See an eye doctor.

Question 10

my right iris is higher than the other. is this normal?

Accepted Answer

Need exam: Hard to say if this is normal for you without an eye exam and more details. Be well.

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Doctor answers about:

Iris

A member asked:

What does iris do?

A member asked:

How big is the iris in millimeters?

A member asked:

Why is the outside of my iris darker?

A member asked:

What can cause a ring around my iris?

A member asked:

What is the dark line around the iris?

A member asked:

What does the ring around the iris mean?

A member asked:

What is the definition or description of: iris?

A member asked:

Please describe these white speckles in my iris?

A member asked:

Can big black dots on my green iris mean anything?

A member asked:

My right iris is higher than the other. is this normal?

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