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 determine the efficacy and safety of preoperative intravitreal conbercept (IVC) injection before vitrectomy for proliferative diabetic retinopathy (PDR). Methods. 107 eyes of 88 patients that underwent pars plana vitrectomy (PPV) for active PDR were enrolled. All patients were assigned randomly to either preoperative IVC group or control group. Follow-up examinations were performed ...

An 80-year-old man had intraoperative loss of an intraocular lens (IOL) in the vitreous and simultaneous implantation of an anterior chamber lens. For the first 3 years his course was uncomplicated, but after this time he noted monocular double vision. The IOL in the vitreous had moved into the optic axis of the eye. The case presented here underlines the possibility of complications occurring ...

background: we observed the clinical effects of comprehensive nursing intervention pattern in 23g minimally invasive vitreous surgery according to the comprehensive nursing intervention table developed by our hospital, which would supply a basis for its clinical application. methods: in this prospective study, we followed 120 patients undergoing 23g minimally invasive vitreous surgery from xuzh...

This paper describes a simplified technique for biopsy of the retina and choroid which had been used in 5 human volunteers. The biopsy was carried out in 4 immediately before enucleation of an eye for malignant melanoma and in 1 patient who was undergoing trabeculectomy for painful glaucoma associated with retinitis pigmentosa. A combination of intravenous mannitol and transient controlled syst...

A frequent point of debate between refractive and retinal surgeons is the risk of pseudophakic retinal detachment (RD) in highly myopic eyes, defined as eyes with an axial length greater than 26 mm (sometimes even exceeding 30 mm) and usually with a spherical equivalent superior to e6.00 D. This degree of myopia is mostly associated with degenerative changes that involve sclera, choroid, retina...

PURPOSE To determine whether aging vitreous collagen fibrils undergo ultrastructural changes that might underlie vitreous liquefaction and posterior vitreous detachment. METHODS Vitreous collagen fibrils from 21 human subjects (age range, 3-89 years) and from bovine eyes were isolated on electron microscopy grids. Cupromeronic blue labeling in the presence of 0.3 M MgCl(2) and immunogold labe...

The aetiology of retinal detachment after lens extraction requires analysis to determine common factors. According to Treister (I972) an increased incidence is due to the use of chymotrypsin. Shapland (I934) quotes an overall incidence of 2z2 per cent using the extracapsular technique. He thought it to be higher in myopic aphakia but he gave no figures. Hyams, Bialik, and Neumann (I975) give an...

Multiple rheological studies have characterized the dynamic material properties of adult vitreous, but no studies have investigated vitreous properties in the immature eye. In this study, premature, infant and adult ovine vitreous specimens were tested in shear to identify differences in dynamic moduli with age. Significant inertial artifact and rapid degradation of the vitreous ex vivo hindere...