Clinic analyse of pars plana vitrectomy associating with extirpation of intraocular foreign bodies

Objective To discuss occasions and methods of operation of pars plana vitrectomy associating with extirpation of intraocular foreign bodies.Methods 30 cases(30 eyes)pars plana vitrectomy associating with extirpation of intraocular forgign bodies were analyzed restrospectively.Results Intraocular foreign bodies were all extirpated with one operation int his group′s 30 cases(30 eyes),27 cases of them were treated with pars plana vitrectomy to extirpate intraocular foreign bodies;After vitrectomy,a big magnetic intraocular foreign bodies near ora serrata was aspirated out by permanent magnet via sclera′s incision;a huge nonmagnetic intraocular foreign bodies on ora serrata was extirpated via limbal incision.through dissociating vitreous body by vitrectomy.Vision of 19 eyes(63.3%) in this group were improved after operation,6 eyes(20%)were not changed,eyesight of 5 eyes(16.7%) declined.Causes of vision decline at forepart had something to do with some factors,such as corneal edema,retinal hemorrhage,vitreous body turbidity,stuffing inVitreous cavity.3 cases(3 eyes,1%) occurred retinal detachment after operation,one of them cured by Scleral buckling operation+vitrectomy+lens removal+cryo-application+intraocular injection gas;One of them gave up treatment;One of them was treated by extraction bulbi because of antrophy of eyeball.Conclusions The cases of which tiny penetrating injury and the injury that can be cured automatically,penetrating injury were oversewed but corneal clarity didn′t affect observation and which had symptom of purulent endophthalmitis should be operated as soon as possible.35 years old patients with turbid lens are advised to take extraction of lens by vitrectomy and extraction of intraocular foreign bodies at the same time.Lens anterior capsules should be kept under operations as possible as man can in order to plant in manual lens.The cases of which nonmagnetic intraocular foreign bodies on circumference and papillary synechia can′t be extended are advised to extirpate lens under operation in order to enlarge field of vision and in favor of search and extraction of foreign bodies and extraction of pathologically changed vitreous body.The patients whos scleral disruption has intraocular foreign bodies left in are advised to take scleral buckling operation at the same time with lens extraction in order to reduce the risk of tractive retinal detachment.