Plateau Iris Glaucoma Workup

Updated: May 06, 2016
  • Author: Jim C Wang (王崇安), MD; Chief Editor: Hampton Roy, Sr, MD  more...
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Workup

Imaging Studies

Ultrasound biomicroscopy

The configuration of the iris surface, iris root insertion, iridocorneal angle, and ciliary processes can be seen in detail to confirm the clinical findings of plateau iris (this is shown in the image below). [9, 10, 11]

Ultrasound biomicroscopy. (A) In plateau iris, the Ultrasound biomicroscopy. (A) In plateau iris, the anterior position of the ciliary body holds the peripheral iris against the trabecular meshwork. (B) The angle is obstructed further in the dark as the peripheral iris thickens with physiologic pupillary dilation.

Any element of pupillary block also may be confirmed with ultrasound biomicroscopy (UBM) imaging.

Cysts or uncommon mass of the iris or ciliary body may be identified as the underlying cause of narrow angle (pseudoplateau iris).

Optical coherence tomography

Optical coherence tomography (OCT) has evolving utility in imaging anterior segment structures and may assist in diagnosing plateau iris. [12, 13]