The PAUL Glaucoma Implant
edited by Victor Koh | Paul Chew | Keith Barton
The PAUL® Glaucoma Implant
A glaucoma drainage device engineered to address the clinical need for safer, more effective IOP control in refractory and complex glaucoma.
The PAUL® Glaucoma Implant (PGI) is a glaucoma drainage device engineered to address the clinical need for safer, more effective IOP control in refractory and complex glaucoma.
The PGI is the first glaucoma drainage device with a reduced outer and inner lumen diameter, providing flow restriction that minimises postoperative hypotony while delivering effective IOP reduction, even in eyes with refractory glaucoma.
Specifications
- Manufacturer
- Advanced Ophthalmic Innovations (AOI), Singapore
- Plate material
- Medical-grade silicone
- Plate size
- 342.1 mm2
- Tube outer diameter
- 0.457 mm
- Tube inner diameter
- 0.127 mm (smallest of any GDD)
- Valve
- Non-valved
- Primary indication
- Refractory glaucoma; expanding to moderate–severe cases
Key design features
Small luminal diameter
Provides flow restriction, reducing early hypotony without a valve mechanism.
Flexible, low-profile silicone plate
Sits flush against the sclera — minimises bleb height and reduces risk of diplopia and strabismus.
Optimised wingspan
Less plate area beneath the rectus muscles, reducing motility disturbance.
Theoretical endothelial benefits
Smaller outer tube diameter occupies less space in the anterior chamber angle.
Broadening indications
Initially for refractory cases; now widely adopted for secondary glaucoma and angle-closure glaucoma.
Explore the clinical evidence
The PAUL Glaucoma Implant covers indications, comparative evidence, surgical techniques, perioperative management, and complex clinical scenarios in 19 chapters contributed by leading surgeons and researchers around the world.