: Forty-one patients underwent vitrectomy through the pars plana for sequelae of severe penetrating injuries. Almost all were inoperable by conventional techniques. After a minimum follow-up time of six months, 13 eyes (32%) had visual improvement and six (15%) were technical successes. The main cause for failure was intravitreal proliferation of fibrous tissue.
Cell proliferation and membrane formation found in the posterior parts of the eye after production of retinal detachment in owl monkey eyes had either the characteristics of macrophages or of membrane-forming epithelial cells. The proliferating cells originated from pigment epithelium. These membranes caused folding of the retina and strand formation in the vitreous cavity. Since cell proliferation was present on all available surfaces, such as the upper and under surface of the retina, and alon...
: Sulfur hexafluoride (SF6) gas, tested in the vitreous chamber of owl monkey eyes, remained in the vitreous cavity about twice as long as air (ten to 11 days vs. five to six days). Its volume expanded from the diffusion of other gases into the created gas pocket. Lens opacities developed when the lens was in continuous contact with SF6 or air. Sulfur hexafluoride appeared to be no more toxic to the retina than air, using electroretinographic, histologic, and electron microscopic criteria.
During vitrectomy through the pars plana, a second instrument, introduced through the opposite pars plana, is useful for specific surgical situations. Removal of pooled blood is facilitated by insertion of a 22-gauge needle connected to an additional infusion bottle. Large bleeding vessels are diathermized with a straight diathermy needle. Preretinal membranes are peeled off with a modified 22-gauge hypodermic needle. Solid vitreous strands are cut with a vitreous scissors, and foreign bodies ar...
To report the application of endoscopy in the management of ocular trauma, describe the clinical settings and the treatment outcomes. Retrospective, consecutive, non-comparative case series at a tertiary eye care centre. Data recorded included aetiology of trauma, presenting vision, corneal condition at presentation, per-operative clinical findings during endoscopy, prognostication of the cases on table, final visual and anatomic outcome. Odds ratios for a favourable outcome were computed for va...
Purpose To report the long-term outcome of pars plana vitrectomy (PPV) for management of retained posterior segment intraocular foreign body (IOFB) secondary to gunshot injury. Methods This is a retrospective interventional case series including consecutive patients who had PPV for retained posterior segment IOFB secondary to gunshot injury. Main outcome measures were final best-corrected visual acuity (BCVA), long-term globe survival and detection of complications. Spearman correlation analyzed...
Ocular perforating injuries can cause significant vision loss and have worse prognosis than ocular penetrating injuries. However, it is difficult to distinguish one from another of these two kinds of open globe injuries in daily clinical practice. Comparing with ocular penetrating injuries, ocular perforating injuries are more challenging to manage due to the possible involvement of the whole eye and the inaccessible locations of the exit wound. Proper evaluation of the extent of the injury base...
To evaluate whether omitting the use of the 360° episcleral band in combination with pars plana vitrectomy and silicone oil tamponade had an effect on either anatomical or functional success in cases of perforating eye injury due to gunshot.A retrospective consecutive interventional study from medical records. Surgeries were performed in the period from January 2011 until the end of December 2013. Patients with perforating eye injury due to gunshots were treated with pars plana vitrectomy and si...
\s=b\A case-control retrospective evaluation of vitrectomy in penetrating ocular trauma was performed by matching 89 eyes, managed with vitrectomy, with 89 similar eyes that did not undergo vitrectomy. The cases were matched according to factors previously shown to correlate with the visual outcome, including the following: (1) type of trauma; (2) length and posterior extent of the laceration; (3) type and degree of lens involvement; and (4) type and location of any intraocular foreign body. The...
Gerec ve Yontem: Ekim 2007-Aralik 2009 tarihleri arasinda klinigimize goz travmasi hikayesi ile basvuran ve arka segmentte yabanci cisim tespit edilerek vitreoretinal cerrahi uygulanan 10 hastanin 10 gozu geriye donuk olarak incelendi. Hastalar cinsiyet, yas, etkilenen goz, travma sekli, yabanci cismin niteligi, goze giris yeri, travma sonrasi hastaneye basvuru zamani, ameliyat zamani ve uygulanan ameliyat acisindan degerlendirildi. Tum hastalarin direkt orbita grafisi cekildi.
Several techniques are described for the treatment of rhegmatogenous retinal detachment. Retrospective studies have not clearly indicated a superiority of one or another technique. In randomized trials, differences between these techniques were demonstrated. Although the evidence is published, the surgeon’s choice of a specific technique is based on many other factors. The results of pneumatic retinopexy, scleral buckling and vitrectomy are discussed and compared. The possible factors affecting ...