[Clinical application of diagnostic vitrectomy and prospective microincision techniques]

Diagnostic vitrectomy is a procedure that can obtain vitreous, retina or choroid specimens form patients with intraocular inflammation or malignant tumors with obscured etiology or ineffective treatment by performing vitrectomy. Then, an accurate diagnosis could be obtained from these specimens by using molecular biological techniques. Diagnostic vitrectomy procedure can be applied for improving diagnosis of atypical uveitis with unknown causes, atypical infectious endophthalmitis, progressive retinitis/choroiditis and retinal pigment epithelium diseases, masquerade syndrome, intraocular bleeding with suspected malignant origin and also can be used for the treatment of complication of chronic uveitis. Microincision diagnostic vitrectomy is a convenient, rapid and safe procedure developed from regular diagnostic vitrectomy.