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.

Mentioned in

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.

Surgical repair of acquired ankyloblepharon in a cockatiel (Nymphicus hollandicus)

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.

A first look at the eye's stem cells

All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.