PURPOSE This study was designed to evaluate the efficacy of fluid-gas exchange for the treatment of postvitrectomy retinal detachment. METHODS We retrospectively reviewed the records of 33 consecutive patients (35 eyes) who underwent fluid-gas exchange treatment for postvitrectomy retinal detachment using the two-needle pars plana approach technique. RESULTS The retinal reattachment rate wa...

Objective: The aim of this paper is to propose a new approach to assess the aggregated impact of risks on the completion cost of a construction project. Such an aggregated impact includes the main impacts of risks as well as the impacts of interactions caused by dependencies among them. Methods: In this study, Monte Carlo simulation and Bayesian Networks methods are combined to present a frame...

PURPOSE To compare the efficacy of air and octafluoropropane (C3F8) in treating rhegmatogenous retinal detachments with inferior breaks after 23-gauge pars plana vitrectomy. METHODS A prospective, randomized comparative interventional study. Sixty-four patients with rhegmatogenous retinal detachment with inferior breaks underwent pars plana vitrectomy with air (32 eyes) or gas (32 eyes) tampo...

To compare refractive changes following 23-gauge (G) vitrectomy with or without gas tamponade in pseudophakic eyes. This retrospective study included patients neodymium: yttrium-aluminum-garnet (Nd: YAG) laser capsulotomy, who underwent 23 G pars plana (PPV) between February 2015 and March 2019. Indications for surgery included; rhegmatogenous retinal detachment Group 1 epiretinal membrane vitr...

We describe a case of maculopathy consisting of macular retinoschisis and serous macular detachment occurring in a patient with an acquired enlarged optic disc cup, similar to the maculopathy observed in congenital optic nerve abnormalities, mainly optic nerve pits and colobomas, without vitreomacular traction nor angiographic leak. Pars plana vitrectomy with argon laser endophotocoagulation an...

A sequence of different Reservoir Engineering methods and tools in reservoir characterization and field development are presented in this paper. The real data of Jin Gas Field of L-Basin of Pakistan is used. The basic concept behind this work is to enlighten the importance of well test analysis in a broader way (i.e. reservoir characterization and field development) unlike to just determine the...

Recently, in most of the condensate tank production projects, two main activities of welding and painting are done in manual and automatic ways. The purpose of this study is "green supply chain management" of these activities in order to select the best production method. For this purpose, by literature reviews and using Delphi and DEMATEL techniques, the indicators and sub-indicators of green ...

We performed deep optical observations of the area of the new supernova remnant G 69.4+1.2 in the emission lines of [O iii], Hα + [N ii] and [S ii]. The low ionization images reveal diffuse and filamentary emission in the central and south, south–west areas of our field. Estimates of the [S ii]/Hα ratio suggest that the detected emission in these areas originates from shock heated gas, while th...