1,720,959 research outputs found
Moorfield regression analysis versus retinal nerve fiber layer in glaucoma and ocular hypertension
No full textPurpose: To evaluate the agreement
between Moorfield Regression
Analysis (MRA) and peripapillary
retinal nerve fibers layer thickness.
Methods: 54 eyes with normal VF
and 18 with early VF damage were
classified as ocular hypertension or
early primary open angle glaucoma
(POAG) and were included in the
study: All the subjects performed
achromatic 30° visual field (VF) by
Octopus Program G1X dynamic
strategy and were imaged by HRT 3
and I-Vue OCT. Sectorial and global
MRA and OCT parameters were
used for the analysis. Kappa statistic
was used to assess the agreement
between methods.
Results: A significant agreement
between I-Vue OCT and MRA a
good agreement was shown in the
supero-nasal (κ 0.656) and nasal
(κ 0.627) quadrants followed by the
supero-temporal (κ 0.602) and inferotemporal
(κ 0.586) sectors in all the
eyes studied.
Conclusion: Our results suggest that
the measurements of the ganglion
cells by HRT 3 and I-Vue OCT are not
interchangeable
Comparison between HRT III Glaucoma Probability Score, Moorfields Regression Analysis and the evaluation of nerve fiber layers with OCT i-Vue in patients with ocular hypertension and/or early glaucoma.
No full textValutazione del grado di correlazione tra la MRA (moorfield regression Analysis), il GPS (Glaucoma Probability Score) dell’ HRT III e L’ONH glaucoma analysis dell’OCT i-Vue.
No full textEvaluation of agreement between HRT III and iVue OCT in Glaucoma and Ocular Hypertension patients.
No full textPurpose. To determine the agreement between Moorfields Regression Analysis (MRA), Glaucoma Probability Score (GPS) of Heidelberg retinal tomograph (HRT III), and peripapillary nerve fibers thickness by iVue Optical Coherence Tomography (OCT). Methods. 72 eyes with ocular hypertension or primary open angle glaucoma (POAG) were included in the study: 54 eyes had normal visual fields (VF) and 18 had VF damage. All subjects performed achromatic 30° VF by Octopus Program G1X dynamic strategy and were imaged with HRT III and iVue OCT. Sectorial and global MRA, GPS, and OCT parameters were used for the analysis. Kappa statistic was used to assess the agreement between methods. Results. A significant agreement between iVue OCT and GPS for the inferotemporal quadrant (κ: 0.555) was found in patients with abnormal VF. A good overall agreement between GPS and MRA was found in all the eyes tested (κ: 0.511). A good agreement between iVue OCT and MRA was shown in the superonasal (κ: 0.656) and nasal (κ: 0.627) quadrants followed by the superotemporal (κ: 0.602) and inferotemporal (κ: 0.586) sectors in all the studied eyes. Conclusion. The highest percentages of agreement were found per quadrant of the MRA and the iVue OCT confirming that in glaucoma damage starts from the temporal hemiretina
Ocular Inflammation: Can It Be a Sign of Activity of Weber-Christian Disease? A Case Report and Review of Literature.
No full textValutazione della concordanza tra la Moorfield Regression Analysis (MRA), il Glaucoma Probability Score (GPS) dell'HRT III e L'ONH glacoma analysis dell'OCT i-Vue
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
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