Is Ahmed Glaucoma Valve Consistent in Performance?

ABSTRACT:

Purpose

To investigate the mechanism of action and consistency in flow characteristics of the Ahmed glaucoma valve (AGV) under simulated physiological conditions in-vitro and to evaluate whether resistance during priming has any effect on performance of the device.

Methods

Each newly opened AGV device was connected to a digital manometer and was primed with normal saline. The device was then placed in a saline bath and connected to an open manometer, a digital manometer, and an infusion pump. Saline was infused at a rate of 3 μL/min for 24 hours. Digital manometer readings were recorded at 4 Hz.

Results

Data obtained from 9 devices are presented as medians (ranges). The priming pressure was 1130 (835, 1625) mm Hg. Pressure versus time curves showed two distinct phases

SUBMITTER: Choudhari NS 

PROVIDER: S-EPMC6016431 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature