Visual outcome of early and late pars plana vitrectomy in patients with dropped nucleus during phacoemulsification

ACKGROUND: Dislocated lens fragments in the vitreous cavity can cause potentially serious complications. This retrospective study aimed to evaluate the visual outcome of patients who underwent pars plana vitrectomy (PPV) for posteriorly dislocated lens fragments after cataract phacoemulsification. METHODS: A retrospective study was conducted on all consecutive cases (60 patients) with pars plana vitrectomy performed for retained lens fragment. In 30 eyes (50%), PPV was performed within 1 week of cataract extraction and in 30 eyes (50 %), PPV was performed more than 1 week post cataract extraction from July 2005 through August 2008. RESULTS: In the late vitrectomy group, 66.6% of eyes developed persistent uveitis, 53.3% of eyes showed elevated intra- ocular pressure (IOP) and 5 eyes retinal detachment. In early PPV group 16.6% developed uveitis and 20% showed elevated IOP and one eye retinal detachment. The final visual acuity was 20 ± 50 in early PPV and 20 ± 200 in late PPV group (mean ± SD, p < 0.001).