Glaucoma drainage devices remain an alternative surgical option in managing glaucoma. They are often reserved for patients in which trabeculectomy surgery has been performed or is unsuitable. A small silicone tube is placed in the front part of the eye, through which the eye fluid drains backward onto a silicone plate, that sits behind the muscles of the eye. The silicone plate acts as a reservoir and collects the eye fluid, hence lowering the eye pressure. Aqueous-Shunt surgery is performed in the operating theatre under general anaesthetic. Patients often go home the same day with a shield over their eye, but are seen the next day.