Safety and Effectiveness of the VisiPlate Aqueous Shunt in Patients With Refractory Open-Angle Glaucoma

Inclusion Criteria: * Open angle, pseudoexfoliative or pigmentary glaucoma * IOP at preoperative visit of ≥ 20mmHg and ≤ 40mmHg * Visual field mean deviation score of -3dB or worse * Area of healthy, free and mobile conjunctiva in the target quadrant * Shaffer angle grade ≥ 2 in the target quadrant Exclusion Criteria: * Angle closure glaucoma * Congenital, neovascular or other secondary glaucomas * Previous intraocular surgery, with the exception of uncomplicated cataract surgery * Previous glaucoma shunt/valve in the target quadrant * Clinically significant inflammation or infection in the study eye within 30 days prior to the operative visit * History of corneal surgery, corneal opacities or corneal disease * Retinal or optic nerve disorders, either degenerative or evolutive, that are not associated with the existing glaucoma condition