rainage devices are an efficient surgical treatment for esistant glaucoma or when previous filtrating surgery fails. here are 2 types of these devices: those comprising valves, n which the device includes a restriction at the outlet of he aqueous, and devices without valves in which the tube onnects with a dish without any type of restriction. Of the ormer, the best known is the Ahmed implant, ...

Implantation of Ahmed glaucoma valve is an effective surgical technique to reduce intraocular pressure in patients affected with glaucoma. While in the past, the use of this device was reserved to glaucoma refractory to multiple filtration surgical procedures, up-to-date mounting experience has encouraged its use also as a primary surgery for selected cases. Implantation of Ahmed glaucoma valve...

AIMS To evaluate the efficacy and safety of the Ahmed glaucoma valve implant in Chinese eyes with complicated glaucomas. METHODS This retrospective study reviewed the final intraocular pressure, visual outcome, and incidence of complications in all patients with the Ahmed glaucoma valve implant performed at the Prince of Wales Hospital, Hong Kong, between June 1996 and November 1998. RESULT...

Synthesis of some novel pyrimido[1,6-a]pyrimidine derivatives 4, 8 and 10 was described through the respective reactions of sodium salts of formyl ketones 1, 7 and 9 with 6-aminothiouracil. The characterization of the reaction products was confirmed by using the available elemental analysis and spectral data. One of these derivatives (4b), 1-thioxo-1,2,7,8,9,10-hexahydro-3H-pyrimido[1,6-a]quina...

The pars plana model of the Ahmed Glaucoma Valve (AGV) is inserted into the vitreous cavity through a sclerostomy, and has a specially designed clip anchors that it in place and avoids tube kinking. The tube deliver aqueous from within the eye to the episcleral plate covered by Tenon’s capsule and conjunctiva, which stimulates fibrovascular encapsulation around the plate. This article elucidate...

Copyright @ 2017 Authors. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author and source are properly cited. Ashfaq Ahmed, Muhammad A. Razzaqu...

Please cite this article as: Samrah Ahmed, Muireann Irish, Clare Loane, Ian Baker, Masud Husain, Sian Thompson, Cristina Blanco-Duque, Clare Mackay, Giovanna Zamboni, David Foxe, John R. Hodges, Olivier Piguet, Christopher Butler , Association between precuneus volume and autobiographical memory impairment in posterior cortical atrophy: Beyond the visual syndrome. The address for the correspond...

This paper investigates the behaviour of Indian aggregate imports during the period 1971-1995. In our empirical analysis of the aggregate import demand function for India, cointegration and error correction modelling approaches have been used. In the aggregate import demand function for India, import volume is found to be cointegrated with relative import price and real GDP. Our econometric est...

Later-life Effects of Mitochondrial DNA Damage During Development in the Whole Organism Model Caenorhabditis elegans by Maxwell C. K. Leung Environment Duke University Date:_______________________ Approved: ___________________________ Joel N. Meyer, Supervisor ___________________________ Shawn Ahmed ___________________________ Jonathan H. Freedman ___________________________ David E. Hinton An ...

A simple model of synthetic (zero-net mass-flux) micro-jet is proposed and implemented in a large-eddy simulation spectral solver of the incompressible Navier-Stokes equations. Essentially, it is simply required to introduce a penalty like term in the momentum equation, with a variable penalty coefficient that culminates during the expulsion phase. Examples of applications are considered for th...