| Summary: | AIM: To investigate the cause and treatment of high intraocular pressure(IOP)after pars plana vitrectomy(PPV).<p>METHODS: Totally, 482 patients(511 eyes)underwent PPV from January 2007 to March 2010, were reviewed to explore the mechanism and treatment of high IOP after PPV. <p>RESULTS: High IOP occurred in 140 patients(141 eyes), the rate of IOP elevation was 27.6%. The rate of IOP elevation was significantly between C<sub>3</sub>F<sub>8 </sub>and silicone tamponading(<i>P</i><0.01). The rate of IOP elevation with sclera buckling was significantly different from that without sclera buckling(<i>P</i><0.05). The rate of IOP elevation in aphakia was different from phakia(<i>P</i><0.01). And it was also had significant difference between traumatic and nontraumatic ones(<i>P</i><0.01). <p>CONCLUSION: The risk factors of IOP elevation include sclera buckling, C<sub>3</sub>F<sub>8</sub> tamponade, aphakia and trauma.
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