1,720,958 research outputs found
Doppia fossetta del disco ottico: aspetti fluoroangiografici.
No full textGli AA decrivono gli aspetti anatomici e fluoroangiografici in un caso con presenza di due fossette colobomatose a livello della testa del nervo ottico di uno dei due occhi del paziente
Effetto dello Yag laser sulla vascolarizzazione dello pterigio.
No full textGli AA evidenziano in casi selezionati di pterigio le possibilità e i limiti nel trattamento della componente neovascolare tramite applicazione con Yag laser
Valutazione critica degli esami fluoroangiografici eseguiti in due anni.
No full textGli AA valutano retrospettivamente gli esami fluoroangiografici effettuati in un periodo di 2 anni, sono valutate le indicazioni alla base della richiesta dell' approfondimento diagnostico fluoroangiografico in relazione alle complicanze delle varie patologie oculari; inoltre sono descritti possibili effetti secondari.The authors report a critical evaluation of two years of fluorescein angiograms, underling situations of limitation and over-utilization of angiographic service.
Key words: Fluorescein angiography, indications, ophthalmoscopy, macular diseases, diabetic retinopathy, retinal vascular diseases, choroidal tumors, optic disk diseases
Risultati funzionali nel trattamento focale della retinopatia diabetica edematosa-essudativa del polo posteriore.
No full textIn casi di retinopatia diabetica con interessamento maculare gli AA sottolineano l' importanza di un corretto trattamento laser delle alterazioni retiniche microvascolari dovute al diabete.Sono riportati i risultati di una personale casistica confrontata con le analoghe principali casistiche presenti in letteratura
A novel intraocular lens designed for sutureless scleral fixation: surgical series
No full textPurpose: To report a retrospective series of patients implanted with a novel hydrophilic acrylic single-piece intraocular lens (IOL) designed for sutureless scleral fixation (FIL-SSF Carlevale lens, Soleko, Italy) injectable through a 2.2-mm incision. Methods: Seventy-eight patients with minimum 6-month follow-up were divided into 6 groups: dropped nucleus, luxated IOL, trauma, aphakia, IOL exchange, and Marfan’s syndrome. Surgery included peritomy and scleral flap creation at 3 and 9 o’clock position. The IOL was then injected and grasped with 25G forceps through a hole created 2 mm posterior to the limbus underneath the sculped scleral flap. Results: The study included 78 patients (mean age 71.9 ± 12.6 years) and average follow-up 10.2 ± 4.2 months. Average surgery duration was 69.4 ± 26.1 min and vision significantly improved from 0.86 ± 0.56 logMAR to 0.38 ± 0.42 logMAR at 6 months post-operative (p < 0.001). Intraoperative complications included corneal edema, retinal tears, and vitreous bleeding each in 2/78 patients (2.5%); 1/78 (1.3%) localized retinal detachment and 1/78 (1.3%) rupture of one T-shaped IOL harpoon. Post-operative complications included 4/78 (5.1%) cystoid macular edemas, 2/78 retinal tears, 2/78 retinal detachments, 2/78 developed ocular hypertension, and 1/78 corneal decompensation requiring DSAEK. Conclusion: The Carlevale lens is designed for sutureless intrascleral fixation and can be successfully used in a variety of indications including difficult trauma cases with good rehabilitation. An implant requires experience and delicate manipulation
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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