ABSTRACT
Objective To evaluate values of magnetic resonance imaging(MRI)in eyes filled with silicone oil.Design Prospective cases series.Participants 40 eyes of 40 patients were filled with silicone oil after ocular injury.Methods MRI was performed in the 40 patients,including axial FSE T_1WI,T_2WI,coronal T_2WI with fat saturation,oblique sagittal T_1WI and axial T_2FLAIR.MRI findings,in- cluding morpbous,signal and complications were analyzed.Oculi axes were measured.Main Outcome Measures Morphous,signal, complications and oculi axes of the eyes filled with silicone oil.Results Affected oculi axis was 2.18cm?0.21cm,normal oculi axis was 2.48cm?0.16cm.The silicone oil in eyes demonstrated isointense signal or slightly hyperintense signal on T_1WI and T_2WI,hypointense signal after fat saturation.Hydrops was found in vitreous cavity in 33 patients,including simple hydrops in 17 patients and complicated other abnormality in 16 patients.Choroidal detachment was found in 11 patients,complicating vitreous hydrops in 5 patients and lo- calized bulge of eyeball wall.Retinal detachments were found in 4 patients,of whom 3 patients complicated with vitreous hydrops.Per- fluorocarbon liquid residual in vitreous cavity,foreign body in anterior chamber,localized thickness of the wall of the globe and meagre- mean of silicone oil in vitreous cavity were found respectively in one patient complicating vitreous hydrops.Except for eye changes, fracture of orbital wall and foreign body in orbit were found in one patient.Conclusions MRI can display the changes of eyes filled with silicone oil,and measure oculi axes biologically and accurately offering important clinical application value.(Ophthalmol CHN,2007,16: 312-315)