Intraocular Pressure Control and Long-Term Outcomes With the Reservoir Technique: The Wisconsin Silicone Oil Study...

Area of Science:

• Ophthalmology
• Surgical Techniques
• Retinal Surgery

Background:

• Silicone oil (SO) tamponade is crucial for complex vitreoretinal surgeries.
• Standard oil fill techniques may lead to complications like ocular hypertension and SO emulsification.
• Optimizing SO tamponade delivery is essential for improved patient outcomes.

Purpose of the Study:

• To compare the long-term outcomes of the reservoir technique versus standard oil fill for SO tamponade.
• To evaluate the efficacy and safety of the reservoir technique in complex vitreoretinal surgery.
• To assess the impact of the reservoir technique on intraocular pressure (IOP), SO complications, and reoperations.

Main Methods:

• Retrospective comparative case series of 313 SO tamponade surgeries (230 eyes).
• Reservoir technique: SO fill with temporary egress into infusion line to create a reservoir before sclerotomy closure.
• Palpation method: Standard SO fill determined by digital palpation without reservoir creation or pressure moderation.

Main Results:

• The reservoir group showed significantly less moderately severe ocular hypertension (1.6% vs 9.3%) and prolonged ocular hypertension (2.9% vs 9.1%).
• SO emulsification was less frequent in the reservoir group (2.7% vs 9.4%).
• Eyes in the reservoir group required fewer SO placements (1.2 vs 1.5 surgeries/eye), with similar final anatomic success rates (80.4% vs 78.2%).

Conclusions:

• The reservoir technique for SO tamponade placement is associated with a lower risk of IOP elevation and fewer SO-related complications.
• This technique reduces the need for reoperations in complex vitreoretinal surgeries.
• The reservoir technique offers a reliable and consistent method for SO tamponade, supporting its use in challenging cases.