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Published on: February 23, 2024
SILICONE OIL TAMPONADE EFFECT ON MACULAR LAYER THICKNESS AND VISUAL ACUITY
Gilad Rabina1, Nur Azem, Dana Barequet
1Department of Ophthalmology, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Silicone oil tamponade temporarily reduces macular thickness in eyes treated for retinal detachment. Visual acuity recovers after silicone oil removal, showing no long-term impact on vision.
Area of Science:
- Ophthalmology
- Retinal Surgery
- Medical Imaging
Background:
- Rhegmatogenous retinal detachment (RRD) necessitates surgical intervention.
- Pars plana vitrectomy (PPV) with silicone oil (SO) tamponade is a common treatment for RRD.
- Understanding the impact of SO on retinal structure and function is crucial for patient outcomes.
Purpose of the Study:
- To assess the effect of silicone oil (SO) tamponade on retinal layer thickness and visual acuity.
- To evaluate changes in central macular thickness (CMT) before, during, and after SO removal (SOR).
- To determine the influence of SO tamponade on visual acuity in patients with RRD.
Main Methods:
- Retrospective case series of patients undergoing PPV for RRD with SO tamponade.
- Measurement of visual acuity and CMT with SO in situ and post-SOR.
- Exclusion of patients with poor image quality or macular pathologies.
Main Results:
- Forty-one patients were analyzed; average SO tamponade duration was 151 days.
- CMT increased significantly from 249 µm with SO to 279 µm after SOR (P < 0.001), nearing fellow eye thickness (281 µm).
- Visual acuity improved from 0.85 logMAR (20/140) with SO to 0.34 logMAR (20/43) after SOR (P < 0.001).
Conclusions:
- Silicone oil tamponade induces a transient decrease in central macular thickness, primarily affecting inner retinal layers.
- Post-SOR, macular thickness returns to levels comparable to the fellow eye.
- The observed changes in macular thickness do not appear to negatively impact final visual acuity outcomes.
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