Is a Dark Iris Cause for Concern?
AUG 31, 2015
Do you know of any eye conditions which result in very dark iris? My young baby has dark eyes so that you can barely distinguish between the pupil and iris. I understand a build-up in CSF (cerebrospinal fluid) can result in the eyes looking darker. Are there other causes?
A dark iris can certainly be normal if this run in the family. The main cause for concern is to rule out a condition known as aniridia. This condition causes lack of iris development and the iris looks dark when actually it is very small or nonexistent. This gives a dark appearance to the eyes because the darkness is actually the space that would normally be the pupil. With no iris tissue, the pupil fills the entire iris space. See a pediatric eye doctor as this can be diagnosed easily.