ciliary margin

iris, plateau

An anatomical anomaly in which the iris lies in a plane rather than bulging anteriorly. This is due to the fact that the root (or ciliary margin) of the iris is inserted more anteriorly into the ciliary body than is usual. On dilatation of the pupil the peripheral iris expands against the trabecular meshwork. It can predispose the eye to angle-closure glaucoma.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Examination of the skin did not reveal evidence of a ciliary margin on the right side.
In the young birds described by Buyukmihci et al, (1) no ciliary margin could be observed.
In animals whose eyes can regenerate, such as fish and frogs, stem cells reside in the ciliary margin, an area on the outer edge of the retina near the iris.