Poster Imen Ammous

Purpose:

To report incidence, risk factors and management of chronic elevated intraocular pressure (CEIOP) after silicone oil tamponade in complex retinal detachment.

Patients & methods:

A retrospective study of 170 cases (169 patients): 108 eyes with complex rhegmatogenous retinal detachment and 62 eyes with tractional diabetic retinal detachment. Pars plana vitrectomy with silicone oil tamponade was performed in all cases, silicone oil removal was done in all cases. CEIOP was defined by intraocular pressure more than 21 mmHg appeared and/ or persisted more than 6 weeks, with silicone oil or after its removal. The incidence of CEIOP, risk factors such as trauma, myopia, aphakia, diabetes mellitus, preoperative glaucoma and scleral buckle were studied.

Results:

CEIOP was found in 17.6% of cases. Silicone oil removal was realized after 4 to 240 weeks with mean duration of 28, 5 weeks. Transit CEIOP was noted in 4 cases. In 20 eyes the CEIOP was controlled by medical treatment. Trabeculectomy was performed in 3 cases, diode laser transcleral cyclophotocoagulation in one eye, and Ahmed glaucoma valve in one eye. Trauma, aphakia, diabetes mellitus, preoperative glaucoma and silicone oil tamponade more than 12 weeks were found as statistically significant factors. The other factors such as myopia, scleral buckle, emulsified silicone oil, pupillary block and angular synechia were not found as statistically significant factors.

Conclusion:

CEIOP is an infrequent complication. Aphakia, preoperative glaucoma and diabetes mellitus were the major risk factors of CEIOP. Medical and surgical management were confronted to the difficulty of IOP control.