Poster Erkan Unsal


To present a case who developed angle closure glaucoma with pupillary block 2 year after vitrectomy and silicone oil tamponade for giant retinal tear and detachment.


55-year-old phakic patient was applied to our outpatient clinic with the complaint of left vision loss. Best-corrected visual acuity was hand motion and intraocular pressure (IOP) was 14mmHg. Left retinal detachment was detected and a giant retinal tears superiorly. Phacoemulsification, posterior chamber IOL implantation combined with three port pars plana vitrectomy and silicone oil tamponade was performed as an initial operation. Postoperatively retina was attached. At first month visit left retinal detachment with proliferative vitreoretinopathy (PVR) was detected on routine ophthalmologic examination and reoperation with retinectomy and silicone oil tamponade was performed. Postoperatively retina was attached and IOL was 16mmHg on first day. After a short period the patient lost the follow up and presented 2 year later with acute onset pupillary block angle closure glaucoma with 360’ peripheric anterior and posterior synechia. Anterior chamber was quiescent and intraocular lens was not dislocated. IOP was 51 mmHg and retina was attached. After YAG laser iridotomy the anteior synechia was releaved then she underwent silicone oil removal with surgical posterior synechiolysis. One week after silicone oil removal best corrected visual acuity was 0.1 Snellen ratio, posterior synechia was developed again at inferior quadrant, IOP was 13 mmHg, retina was attached. YAG laser iridotomy at 6 o’clock was performed and she remained stable afterwards.

Effectiveness / Safety:

Long-term follow-up is crucial after three-port pars plana vitrectomy and silicone oil tamponade in order to prevent late complications such as glaucoma with various mechanisms. Development of pupillary block due to chronic inflammation is one of the proposed mechanisms for late onset glaucoma in cases with silicone oil tamponade. Management of glaucoma can be done by removal of silicone oil and relieving posterior – anterior synechia in cases without trabecular damage.