Drainage devices useful for refractory disease

Fort Lauderdale, FL-The B?rveldt-250 mm2 Glaucoma Implant (Advanced Medical Optics) seems to be more effective at lowering IOP than the Ahmed S2 Glaucoma Valve (New World Medical Inc.) in adult patients with refractory glaucoma. However, regardless of which of the devices is implanted, the preoperative IOP is a risk factor for eventual failure, according to Darrell WuDunn, MD, PhD, and colleagues, who presented their findings at the annual meeting of the Association for Research in Vision and Ophthalmology.