<prompt> Ex- Press glaucoma implant-Stainless steelGoldSiliconeTitanium  <response>: The EX-PRESSr Glaucoma Filtration Device is intended to reduce IOP in glaucoma patients when medication and conventional surgical treatments have failed. The device channels aqueous humor through a secure lumen of either 50 mm or 200 mm to a half-thickness scleral flap, creating a subconjunctival filtration bleb. This Lumenal Control means uniform filtration; uniform filtration helps to stabilize IOP during and after the procedure; and stable IOP means greater predictability. 