Comparison Between the eyeWatch Device and the Ahmed Valve in Refractory Glaucoma

Area of Science:

• Ophthalmology
• Medical Devices
• Glaucoma Management

Background:

• Refractory glaucoma often requires surgical intervention with aqueous shunts.
• Previous surgeries may fail, necessitating further procedures to control intraocular pressure (IOP).

Purpose of the Study:

• To compare the efficacy and safety of the adjustable eyeWatch glaucoma drainage device versus the Ahmed glaucoma valve (AGV) in patients with refractory glaucoma.
• To evaluate the impact of these devices on intraocular pressure and need for medications.

Main Methods:

• A monocentric, retrospective, comparative clinical trial was conducted.
• Patients with refractory glaucoma received either an AGV or the eyeWatch device with a Baerveldt implant.
• Success was defined by IOP reduction and specific IOP ranges; secondary outcomes included IOP, medication use, visual acuity, and complications.

Main Results:

• Both devices significantly reduced IOP and the number of glaucoma medications.
• The eyeWatch group showed higher complete (67%) and overall (89%) success rates compared to the AGV group (50% and 58%).
• Mean IOP decreased significantly in both groups, with favorable outcomes in the eyeWatch group.

Conclusions:

• The adjustable eyeWatch glaucoma drainage device offers an effective alternative for refractory glaucoma management.
• Postoperative adjustability of the eyeWatch may contribute to fewer complications and improved IOP control compared to the non-adjustable AGV.