Magnetic Resonance Imaging Study on Blebs Morphology of Ahmed Valves.

Purpose: To determine the morphometric parameters of filtration blebs of a valved aqueous humor drainage device.

Materials And Methods: Orbital magnetic resonances imaging (MRI) was taken after implantation of an Ahmed valve (FP7 model). Outcomes of the analysis were intraocular pressure (IOP) and the bleb's morphometric analysis (volume, height, major and minor axis).