Evaluation of post-operative foveal location and microstructural changes after pars plana vitrectomy for rhegmatogenous retinal detachment using enhanced-depth imaging optical coherence tomography.

Background: Patients who had successful rhegmatogenous retinal detachment (RRD) surgery often complained of metamorphopsia due to postoperative fovea displacement and alteration of the foveal microstructure. The papillo-foveal distance (PFD) is correlated bilaterally. Therefore, PFD from the fellow healthy eye could be used to determine the change of foveal position in eyes with successful RRD repair.

Staff knowledge, adherence to infection control recommendations and seroconversion rates in hemodialysis centers in Khartoum.

Introduction: We evaluated hemodialysis (HD) staff knowledge, adherence to infection control recommendations and seroconversion rates for hepatitis B virus (HBV) and hepatitis C virus (HCV) in 13 centers that continuously provided HD services in Khartoum State between June 2009 and November 2010.

Methods: The knowledge of 182 HD staff members was evaluated by a self-filled questionnaire. Relevant data were obtained from 1011 HD patients by direct interviews and record review.