Longitudinal changes in peri-papillary retinal nerve fiber layer thickness in patients with unilateral branch retinal vein occlusion

Background: Associations between retinal venous occlusion (RVO), elevated intraocular pressure, and glaucoma have been reported. Further investigations into structural alterations in the fellow eyes of individuals with unilateral RVO have revealed that the peripapillary retinal nerve fiber layer is thinner than in healthy eyes, suggesting that there may be systemic risk factors common to both RVO and glaucoma. We aimed to evaluate changes in peripapillary retinal nerve fiber layer thickness (pRNFLT) among individuals with unilateral branch retinal vein occlusion (BRVO). Methods: This prospective observational study recruited 30 individuals (60 eyes) with newly diagnosed unilateral BRVO and macular edema, and a control group of 30 healthy individuals (30 eyes) with no abnormalities on fundus examination or concurrent systemic comorbidities. After baseline measurements, the participants were reassessed at 6, 12, and 24 months by measuring global and sectoral pRNFLT using spectral-domain optical coherence tomography. Results: The mean age and sex distributions were comparable between the patient and control groups (both P > 0.05). When compared to fellow eyes, global and sectoral pRNFLT in eyes with BRVO were significantly higher at baseline (all P < 0.05). Over time, pRNFLT decreased dramatically, and by the conclusion of the two-year follow-up, there was a significant reduction from baseline in the affected eyes (all P < 0.05). Likewise, affected eyes experienced a significant improvement in best-corrected distance visual acuity and central macular thickness over the two-year follow-up (both P Less than or equal to 0.001). Comparing the global and all-sector pRNFLT of fellow eyes in the patient group with those of normal eyes in the control group, there were no significant differences at any visit, except in the temporal sector, which revealed a significant reduction in pRNFLT at 24 months in the fellow eyes of patients with unilateral BRVO (P = 0.02).   Conclusions: Patients with unilateral BRVO experienced a significant reduction in pRNFLT in the affected eyes and, to a lesser extent, in the fellow eyes, compared with that of the control arm, suggesting that they are prone to retinal nerve fiber layer damage. The reduction in pRNFLT in the normal fellow eyes of patients with BRVO may be attributed to age or concurrent systemic comorbidities. Further studies with long follow-up periods are required to shed light on the etiology of functional and structural changes in both the retinal nerve fiber layer and ganglion cell complex in the normal and affected eyes of patients with unilateral BRVO

Social media in democratic transitions and consolidations: what can we learn from the case of Tunisia?

© 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group. The aim of this paper is to analyse the use of social media in the stages of uprising, democratic transition and democratic consolidation using the case study of Tunisia. While the impact of social media in uprisings has been widely documented in past research about the MENA region, Tunisia provides new evidence to the use of Internet in the processes of democratisation. Consequently, this research focuses in detail on the benefits but also the pitfalls of social media in transitions and consolidations. Data collection was based on interviews with Tunisian social media activists. The analysis is valuable to social media practitioners and researchers alike

Egypt's feminist counterpublic: The re-invigoration of the post-revolution public sphere

This study examines the current feminist counterculture movements which appears to be reinvigorating the Egyptian public sphere. The study argues women in particular have been able to find themselves alternative ways to develop a discourse focused on a desire for social changes around which they can unite. In focusing on lifestyle issues that normally are discussed only in small private spheres, they are able to challenge norms while not provoking the state or security apparatus and avoiding becoming part of the polarised political environment. This article explores the dynamics and motivations of these groups through a case study of three of the networked feminist movements. Our data from semi-structured interviews with the founders show that they grew from networks to movements which then evolved in order to be sustainable. This article argues that through the process of their evolution, these movements are helping strengthen the public sphere and enhance Egyptian democracy

Sustainability in supply and value chain management

This chapter presents the case for integrating sustainability principles into supply and value chain management provision at higher education level as an urgent matter for consideration. It draws on the key declarations including Global Action Programme (GAP) of UNESCO that support the incorporation of sustainability values and practices into all aspects of learning to underscore the need for embedding supply and value chain management curriculum with sustainability. The shared experience and insights from scholarly engagement with integrating sustainability principles at three levels in higher education facilitates sustainability knowledge transfer. Grounded in the extant literature, a critical discussion of the integration process including pedagogical practices reveals prospects and challenges to scaling up of sustainable supply and value chain management education

Egyptian Satirical Graphics on Social Media after the Arab Spring

This paper investigates Egyptian digital forms of satirical graphics mostly published on Social Media by cartoonists and amateurs after the Arab Spring. These include: webcomics memes, and Graphic Interchange Format (GIF). The paper will focus on two Facebook pages as a case study: Asa7be Sarcasm Society and Islam Gawish's Elwarka/The Paper. With this aim in mind, I will show how these forms of political satire incorporate, cinema, theatre, religion, western elements and pan-Arabism to express a political view in a creative manner to appeal to a more diverse and broad audience. The first part of the paper provides a brief discussion of Arabic/Egyptian satire with specific reference to political cartoons and Egyptian youth activism on social media (specifically Facebook). It will also introduce the concept of satirical graphics and some of its concrete applications. The second part describes the methodology and provides an analysis of the case study

The role of supply management resilience in attaining ambidexterity: a dynamic capabilities approach

Purpose – This study aims to explore the necessary role of supply management (SM) resilience capabilities in making effective trade-offs to attain an ambidextrous state, i.e. the state of attaining exploitation and exploration with dexterity, or achieving high levels of both. Sustainability requires effective trade-offs among economic, environmental and social outcomes while maintaining the longevity of the buying firm. Existing literature highlights the difficulty of making effective trade-offs due to likely tensions between divergent demands, i.e. tensions between exploitative and explorative performance goals. Design/methodology/approach – This conceptual study extends insights from the dynamic capabilities approach to explore the nature of SM resilience and its role in attaining ambidexterity. Findings – This study proposes SM resilience as a multifaceted dynamic capability that is determined by two contrasting aspects of stability (engineering and ecological resilience) that aid the buyer’s firm to ambidextrously adapt and transform in turbulent environments. Practical implications – The study highlights the competencies and resilience capabilities that managers need to develop and maintain in pursuing an effective balance of exploitation and exploration in SM. Originality/value – The proposed framework extends existing SM sustainability frameworks by examining the nature and dimensionality of resilience and linking it to ambidexterity. The proposed framework provides a platform for the integration of theoretical aspects from various research streams; socio-ecological literature, dynamic capabilities and organizational ambidexterity