What is Going On With This Eyeball?

A 37-year-old woman recently went to her eye doctor complaining of itching and watering eyes. While taking a close look, the doctor saw this freaky sight staring back.

As reported in the New England Journal of Medicine, the condition is called “protruding iris collarette,” and despite how things look, it’s absolutely nothing to worry about.

It’s a rare, benign condition that doesn’t affect vision (the woman has 20/20 vision), carries no symptoms, and requires no treatment. Scientists have documented cases of protruding iris collarettes before, but this example is particularly striking. Scientists aren’t entirely sure what causes this feature, but genetics could be involved. As noted by the Chinese scientists who wrote up the case study, “This finding is a normal variant.”

Another (possible) example of a protruding iris collarette. (Image: Luizmeira)

The iris collarette marks the thickest region of the iris, and it separates the inner pupillary portion of the eye from the outer ciliary portion. It’s also the part of the eye where the sphincter muscle (no, not that sphincter muscle), and the dilator muscle overlap. Iris collarettes are typically flat, but as seen in this patient, they can sometimes extrude outwards in a distinctive ring-like pattern.

As for the patient, her itching and watering eyes were the result of an allergic reaction, and not related in any way to her strange iris (a so-called “incidental finding”). As noted in the NEJM, the “patient received treatment for allergic conjunctivitis and reassurance about this incidental finding.”

“Reassurance” being the key word.

We’ve reached out to the doctors for more information and will update this post when we hear back.

source: gizmodo.com by George Dvorsky


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.