AIM To describe the phenomenon of peripheral field loss following routine pars plana vitrectomy for stage 2 and 3 full thickness macular hole and to investigate the underlying mechanism. METHODS Five patients, who reported peripheral field defects after apparently uncomplicated vitrectomy, posterior cortical vitreous peeling, and perfluoropropane (C3F8) gas tamponade, were studied retrospecti...

We report two cases of surgical removal of a retained subfoveal perfluorocarbon liquid (PFCL) bubble through a therapeutic macular hole combined with intravitreal PFCL injection and gas tamponade. Two patients underwent pars plana vitrectomy with PFCL injection for rhegmatogenous retinal detachment. In both cases, a retained subfoveal PFCL bubble was noticed postoperatively by funduscopy and op...

Northwest Borneo orogene. The shelf widens to more than 300 km toward the south in Sarawak and measures about 100 km in the north in Sabah. Structural deformation is most severe onshore and decreases toward the offshore, where all the currently producing East Malaysian fields are located. The two largest offshore oil fields, the Baronia field in northern Sarawak and the Samarang field in southe...

OBJECTIVE To determine the leading causes of fatal injury for urban South African children aged 0-14 years, the distribution of those causes and the current potential for safety improvements. METHODS We obtained injury surveillance data from the National Injury Mortality Surveillance System 2001-2003 for six major South African cities varying in size, development and sociodemographic composit...

This work forms the second part of a two series providing necessary scaffolding for digital forensic discipline to conduct effective peer review in their laboratories and units. The first articulated need structured approach investigations (Horsman Sunde, 2020). Here two, Phase-oriented Advice Review Structure (PARS) is offered. PARS documented methodology forensics field, six staged designed f...

The preliminary results of a geochemical survey of fumaroles and hot springs in the Torfajökull geothermal area, South Iceland, are presented. The total gas content in fumarole steam ranges from about 20 to roughly 25,000 mmole/kg, with carbon dioxide as the main component. Gas geothermometers indicate subsurface temperatures of about 300°C in the northern, western, and central parts of the are...

in this paper, thermal effect of plasma arc welding is investigated, and temperature field of ferrite stainless steel is acquired. thermal effect of plasma arc and subsequently the generated temperature field in the work piece is the key for analysis and optimization of this welding process, which is the main goal of this paper. finite element simulation of welding process by simplec method and...

Fifty patients with retinal detachment accompanied by vitreous haemorrhage, perforating eye injuries, intraocular foreign bodies, massive preretinal retraction,.giant tears greater than 180 degrees, and proliferative retinopathies underwent pars plana vitrectomy, cryocoagulation, scleral buckling, and intravitreal gas injection. Intraoperative complications included minimal to moderate bleeding...