Glaucoma drainage device implantation is a surgical procedure used to treat glaucoma by implanting a tube shunt that helps drain excess fluid from the eye. The procedure aims to reduce intraocular pressure (IOP) and prevent damage to the optic nerve. It is typically performed when other glaucoma treatments, such as medications or laser therapy, have failed.

The device is implanted into the eye, where it creates a drainage pathway for the aqueous humor, thereby lowering IOP and preventing further damage. The procedure is effective in managing glaucoma in patients with advanced disease or those who are not candidates for other surgeries.

Glaucoma drainage device implantation can provide long-term relief, helping to preserve vision and reduce the risk of further optic nerve damage.