Choroidal detachment at the late stage following glaucoma filtering surgery

Objective To study pathogenesis and therapy of choroidal detachment at the late period following filtering surgery.Methods Six patients with choroidal detachment at late stage fitering surgery,who had a history of angle closure glaucoma(4 eyes),open angle glaucoma(1 eye) inflammatory glaucoma (1 eye) with failed operation and multiple medical therapy (including timolol and/or acetazolamide),were retrospectively analyzed.Results 6-35 months after operation,six cases appeared choroidal detachment proved by B-scan ultrasonography.Two eyes were cured with disconinued pharmcology aqueous suppressant therapy and added cycloplegia mydriatics and steroid.Their anterior chamber reformed and intraocular pressure got reised,but one of them developed recurrent choroidal detachment following timolol administrated again.Other 4 eyes with severe inflammatory faction were treated with choroidal tap,reforming anterior chamber and cataract extraction after with failed medicine control.Postoperativly,3 eyes got useful vision.Corneal decompensation occurred subsequently in 1 case.Medicine controlling for intraocular pressure was still required in 4 eyes.Conclusion The chroroidal detachmeht at late stage in previous filtering eyes is related to aqueous suppressant therapy and intraocular inflammatory reaction.Identification of these symptoms are easy but to control intraocular pressure and preserve vision sometimes difficult.