the cases described and the problems discussed are : ( 1 ) iofbs embedded deeply in dense fibrous tissue which can not be exposed and removed , ( 2 ) iofbs located in a 'dead space ' at the anterior pars plana and ciliary body regions , ( 3 ) readherence of a residual stump causing traction retinal detachment , and ( 4 ) abnormal hyperviscosity of the vitreous in perforation injuries with long-standing retained iofbs , without vitreous hemorrhage .
C0229167
pars plana
C0008779
ciliary body regions