plateau iris

pla·teau i·ris

in angle-closure glaucoma, a flat appearance of the iris rather than a forward convexity.

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.
References in periodicals archive ?
2] Yet if plateau iris syndrome/ configuration is considered, these parameters might be within normal range compared to "normal" configured eyes [2].
Progressive anterior dislocation of the ciliary body with bolstering of the peripheral iris and formation of peripheral anterior synechiae has been described in cases with plateau iris (long term follow up) by ultrasonic biomicroscopy (UBM) [2], as it is the case in our patient (Figure 5 a, b).
Plateau iris syndrome results from anteriorly positioned ciliary processes holding up the peripheral iris and maintaining its apposition to the trabecular meshwork.
Can only be performed when the limbus is clear, so eyes with scarred temporal corneas cannot be graded O Unsuitable for certain clinical conditions such as plateau iris syndrome.
Argon laser peripheral iridoplasty and laser iridectomy for plateau iris glaucoma].
Ouazzani BT, Berkani M, Ecoffet M, Lachkar Y Argon laser iridoplasty in the treatment of angle closure glaucoma with plateau iris syndrome.
In angle closure glaucoma, IOP increases due to obstruction of aqueous outflow through the trabecular meshwork, either through a pupil block mechanism or by plateau iris syndrome.