1,720,976 research outputs found
Correlation between standard threshold perimetry and frequency doubling technique indices
No full text
Choroidal Freckling in Pediatric Patients Affected by Neurofibromatosis Type 1
No full textGreater understanding of choroidal freckling in patients affected by neurofibromatosis type 1 (NF1) has changed the previous belief that choroidal lesions are unusual in eyes with this disease. In fact, the high frequency of freckling suggests that the choroid is a structure commonly affected in patients with NF1. A review of patients aged 16 years or younger was performed. Recent studies using near-infrared reflectance imaging have shown that choroidal freckling frequently occurred in pediatric patients. As a result of these findings, some authors have suggested that choroidal freckling should be considered as a new diagnostic criterion for NF1
Tecniche psicofisiche ed elettroretinografia per la determinazione del danno glaucomatoso iniziale
No full textThe aim of this study was to identify an early sign in glaucoma diagnosis, using automated perimetry and pattern electroretinography. We have selected 54 glaucoma-suspects, underwent threshold perimetry (Humphrey 30-2), high-pass resolution perimetry (HRP) and pattern electroretinography (PERG). The patients were classified as glaucomatous when the results of two of these tests were significantly abnormal. We observed a significant (p<0,01) correlation between an asymmetry in MD value and the results of the other tests. Our results showed 26 (89,65%) of the 29 subjects whose difference in MD value between the two eyes was less than 1,8 dB, had normal responses to the other tests. Among the 25 subjects who showed a difference of more than 1,8 dB, 12 (48%) had a glaucoma diagnosis confirmed by other tests
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
- …
