Material and Methods: Retrospective study including 120 eyes operated by 23 gauges pars plana vitrectomy with silicone oil (SO) tamponade. All patients had a complete pre- and post-operative assessment. SOIG was defined as a postoperative intra ocular pressure (IOP) greater than 21mmHg for at least 6 weeks. Patients who developed intra ocular hypertension (IOHT) underwent SO removal and were put on medical, laser or surgical treatment if OHT persisted. We studied the risk factors SOIG onset as and IOP control rates with each therapeutical means.

Results: SOIG was noted in 45 patients (37,5%). The risk factors found in the univariate study were diabetes (p=0,007), rhegmatogenous retinal detachment (p=0,036), SO presence in the anterior chamber (AC) (p<0,001) and tamponade duration ? 12 months (p<0,001). In the multivariate study retained only tamponade duration ? 12 months (OR=13,03). SO was removed after 14,53 ± 8.87 months on average. IOP control was achieved with SO removal in 6 cases (13,33%), medical treatment in 30 cases (77%), selective laser trabeculoplasty (SLT) treatment in 6 cases (13,33%), trabeculectomy in 2 cases (4,44%) and cyclo diode therapy in one case.

Conclusion: SOIG is a complication of SO injection that can affect the visual prognosis. Its management is difficult and could requires medical, laser or surgical treatment. Tamponade duration appears to be an important risk factor for SOIG occurrence. Keywords : Retinal detachment, Silicone oil, Glaucoma, Risk factors, Therapeutics