1,720,960 research outputs found
Intravitreal Bevacizumab versus Low Fluence Photodynamic Therapy for the treatmentof Chronic Central Serous Chorioretinopathy
No full textAbstract
PURPOSE:
To report the effectiveness and safety of intravitreal bevacizumab injection (IVB) compared with low-fluence photodynamic therapy (L-PDT) in eyes with chronic central serous chorioretinopathy (CSC).
METHODS:
This was a prospective comparative interventional study of 22 patients affected by chronic CSC. Patients were randomly assigned to group 1 (12 patients treated with 1.25 mg IVB) and group 2 (10 patients treated with L-PDT). In group 2, PDT with verteporfin was delivered at low fluence (300 mW/cm(2) for 83 s, 25 J/cm(2)). Follow-up visits were scheduled at 1, 3, 6, and 9 months.
RESULTS:
The improvement in visual acuity was greater in group 1 than in group 2, although the difference was not statistically significant (P = 0.59). The mean change in central point thickness over 9 months from baseline was 127 μm (SD 36) in group 1 and 114 μm (SD 42) in group 2. After the first injection, retreatments were given if recurrence was noted, with an average of 3.0 ± 1 injections in group 1 and 1.6 ± 0.6 treatments with L-PDT in group 2. The difference between retreatment in the 2 groups was not statistically significant (P = 0.45).
CONCLUSIONS:
Based on the results obtained after 9 months of follow-up, our study provides evidence that IVB may be a treatment option for chronic CSC
Central Retinal Vein Occlusion Treated with Ozurdex: A Case Report and Review of Literature
No full textPurpose: To describe the retinal changes occurring after Ozurdex(®)
(Ozurdex, Allergan, Inc., Irvine, CA) injection and peripheral laser treatment in
a case of central retinal vein occlusion (CRVO). Case Report: A 51-year-old
Caucasian man with massive retinal edema (926 μm) and hand motion visual acuity
due to severe CRVO was treated early with Ozurdex intravitreal injection.
Detailed monthly follow-up examinations showed complete resorption of the edema
(253 μm) after 2 months and a 20/32 visual outcome after 3 months. The patient
subsequently developed peripheral retinal ischemia accompanied by recurrence of
small retinal cystoid spaces (295 μm); therefore, he underwent an associated
laser treatment on the involved peripheral retina, which led to a recovery in
retinal thickness (280 μm). His visual acuity remained stable at 20/32.
Conclusions: Early Ozurdex injection in association with late laser
photocoagulation was effective in the resorption of CRVO macular edema and in
restoring reasonably good visual acuity
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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