For the first time, vitreous oxygen tension in the human vitreous body was measured using a polarographic oxygen electrode during vitreous surgery. The same method was used in a rabbit experimental model. In the human eye, the mean oxygen tensions of the anterior peripheral vitreous body, central vitreous body and posterior vitreous body were 16.7 +/- 3.7 mm Hg (mean +/- 1 SD), 15.9 +/- 2.8 mmH...

Vitreoretinal surgery is undertaken to treat several eye problems involving the retina, macula, and vitreous fluid, and this surgery is considered one of the most difficult to perform. Many eye problems are treated with vitreoretinal surgery including macular degeneration, diabetic retinopathy, and retinal detachment. During vitreoretinal surgery, small implements are inserted into the ocular v...

PURPOSE To report a case of rhegmatogenous retinal detachment in the late stage, despite the fact that it had previously been halted after intravitreal injection of an antimicrobial agent against endogenous bacterial endophthalmitis (EBE). CASE This study involved a 62-year-old male who had previously been diagnosed with septicemia due to liver abscess and the detection of Klebsiella pneumoni...

Purpose. To determine the efficacy of intravitreal ranibizumab injection as adjuvant therapy in the treatment of neovascular glaucoma (NVG) accompanied by postvitrectomy diabetic vitreous hemorrhage (PDVH). Methods. Eighteen NVG patients (18 eyes) accompanied by PDVH were enrolled in this prospective, monocenter, 12-month, interventional case series. The consecutive 18 patients with an IOP ≥ 25...

PURPOSE To evaluate the efficacy of autologous plasmin enzyme as an adjunct to vitrectomy in diabetic macular edema. METHODS Plasmin derived from autologous blood was injected intravitreally into seven eyes 15 min before vitreous surgery. The development and progression of a posterior vitreous detachment (PVD) was followed, and the time required for vitreous removal was measured. Both pre- an...

OBJECTIVE To measure interleuquin-6 (IL-6) levels in the vitreous body of patients with retinal detachment (RD). PATIENTS AND METHODS Undiluted vitreous samples were obtained from 40 patients with no history of prior vitreous or intraocular surgery. Patients were divided into two groups: A (n=20) patients with RD and B (n=20) patients with pre-retinal macular membranes and macular holes. IL-6...

OBJECTIVE To evaluate the effect of preoperative intravitreal bevacizumab injection on the incidence of postoperative haemorrhage and visual prognosis, in patients undergoing 25-gauge micro incision vitrectomy surgery (MIVS) for diabetic vitreous haemorrhage. METHODS One hundred and twenty two eyes of 122 patients of diabetic retinopathy of both genders and aged over 18 years, who presented w...

PURPOSE To evaluate levels of malondialdehyde and the total antioxidant capacity (TAC) in the blood, aqueous humor, and vitreous bodies of diabetic and nondiabetic patients. We also measured the blood energy charge potential (ECP). METHODS We examined 19 patients with type 2 diabetes mellitus and diabetic retinopathy. Ten were scheduled for cataract surgery and pars plana vitrectomy because o...

PURPOSE We investigated changes in corneal thickness following vitreous surgery and determined whether such changes can be used to evaluate the invasiveness of a vitrectomy. PATIENTS AND METHODS This retrospective, consecutive, comparative study examined 20 eyes that had undergone 23-gauge vitrectomy. Corneal thickness was measured prior to as well as following 1 week, 1 month, and 3 months a...