Clinical analysis of the dislocated posterior chamber intraocular lens

Objective To study the causes and managements of the dislocated posterior chamber intraocular lens(IOL).Methods The causes and managements of posterior chamber IOL dislocation in 23 eyes were analyzed.The managements included pupillary dilatation with 1% tropicamide,replacement,operative reduction,reimplantation after vitrectomy and removement of IOLs.Results The rupture of posterior capsule,broken ciliary zonule,prolapse of vitreous during surgery trauma after surgery,type and material of intraocular lens were mainly causes of posterior chamber IOL dislocation.Pupillary dilatation with 1% tropicamide was achieved on 2 of 23eyes,Simple-replace of the IOL was performed succesfully on 10 eyes,anterior IOLs were implanted on 4 eyes,posterior IOLs were implanted on 4 eyes,and the IOL was removed on 3 eye.Visual acuity was improved 0.05to 0.8 in 20 eyes,visual acuity of 18 eyes were ≥ 0.1,and visual acuity of 12 eyes were ≥ 0.5.Conclusion The dislocation of the IOL were related to the rupture of posterior capsule,broken ciliary zonule,prolapse of vitreous during surgery,trauma after surgery,type and material of intraocular lens.Reimplantation after vitrectomy is an effective method for management of the posterior chamber IOL dislocation.