Advanced
Technical
IVT
glaucoma drainage device
Also written as: GDD — glaucoma drainage device
Implanted device that creates an alternative drainage pathway for aqueous humor to reduce intraocular pressure.
Full Definition
A glaucoma drainage device, also known as an aqueous shunt or tube shunt, is a surgically implanted device used to manage glaucoma when conventional treatments are insufficient. The device consists of a small tube that drains aqueous humor from the anterior chamber to a plate reservoir, where it is absorbed by surrounding tissues. Common types include the Ahmed valve, Baerveldt implant, and Molteno implant. These devices are typically reserved for refractory glaucoma cases.
Usage
Usage note: Specify the brand/type of device and the indication for implantation.
In Context
- "A Baerveldt glaucoma drainage device was implanted to control refractory glaucoma." — Surgical procedure note
- "The glaucoma drainage device successfully reduced IOP from 35 to 18 mmHg." — Post-operative follow-up
Also known as
aqueous shunt
tube shunt
glaucoma implant
Don't confuse with
trabeculectomy
cyclophotocoagulation