Search results for "Visual"
showing 10 items of 7386 documents
Cluster visual field progression and its relationship with optic disc changes
2015
Purpose Glaucoma diagnosis and follow up of progression is often based on structural and functional assessments. This study aimed to assess clustered progression and evaluate its correlation with the corresponding disc changes (RA sectors) obtained from HRT examinations. Methods 51 eyes from OHT and glaucoma patients with a minimum of 5 reliable visual ᴀ밄eld tests (HFA II i 24-2) and HRT with a follow-up >4 years were analyzed retrospectively. Linear regression of clusters deᴀ밄ned by the Glaucoma Hemiᴀ밄eld Test (GHT) was performed based on the mean threshold in each cluster. Global and sectoral rates of change in RAs were assessed and correlated with functional clustered measures. Cluste…
Anatomic and functional follow-up of patients with an idiopathic epiretinal membrane and a preserved visual acuity
2013
Purpose: To determine the anatomic and functional retinal modifications in patients with an idiopathic epiretinal membrane (ERM) and a preserved visual acuity (VA).Methods: Monocentric, prospective study in 24 eyes of 24 patients with an ERM and a VA better than 20/25. Recorded data were best corrected VA on ETDRS scale, retinal anatomic lesions on spectral-domain OCT, retinal sensitivities on microperimetry and macular and foveal thicknesses at 0 and 6 months.Results: At inclusion, mean VA was 84 ± 5 letters, mean macular sensitivity was 14.0 ± 1.4 decibels (dB) and mean foveal sensitivity was 14,4 ± 1,5 dB. Mean macular thickness was 351 ± 34 µm and mean foveal thickness was 348 ± 66 µm. …
Motion perception in early glaucoma
2013
Purpose: The aim of our study was to underline the changes in the movement perception for early glaucoma. Our working hypothesis consisted in inquiring if the impairment of the magnocellular pathway may modify the movement perception capabilities in the visual field, more particularly in its peripheral area.Methods: We included 14 healthy subjects and 14 patients with early primary open angle glaucoma. A moving target was presented on a semicircular screen (1.8 m diameter); participants were asked to localize the Ending Point (EP) of each movement. Each stimulus consisted in a white dot (0,72° of diameter) moving horizontally with the imposed velocity profile. Two different laws of motion w…
Visual Methodologies and Geography's education in the pandemic time: notes on geopolitics of migration in the "Mediterranean Complex"
2022
<abstract> <p>The relationship between Geography and the Visual has always been strong intertwined. As it is true that Geography has always operates through images (in the form of pictures, creative representations and above all cartographies), in the last two years, with the distance learning due to the spread of the Covid-19 pandemic, this phenomenon has not only increased, but it also became necessary. "The classroom as the most radical space", in the words of bell hooks, had to turn into a virtual space, where images have a fundamental role in the teaching/learning process. This paper wants to analyse the relationship between Geography and the Visual by analysing three image…
Development and characterisation of polymer composite materials with bio-inspired functions
2018
Promocijas darbs ir izstrādāts disertācijas veidā fizikas nozarē materiālu fizikas apakšnozarē. Pētījums tika veikts LU Materiālu mehānikas institūtā. Darbs saistīts ar aktuālu un jaunu pētījumu virzienu: bioinspirēto funkciju tālāku attīstīšanu slodzi nesošos kompozītos. Tās ir mehānisku triecienu vizuālās indikācijas un polimēru matricas vaskulārās pašdziedināšanas funkcijas. Šīs funkcijas tika nodrošinātas, izveidojot viedus slāņus un iebūvējot tos kompozītā. Pētījumā tika noskaidrotas piemērotās pārbaužu secības, attīstītas kvantitatīvas metodes un mehānisks modelis, lai novērtētu jauno funkciju efektivitāti kompozītos. Ir pierādīta funkciju augstā efektivitāte un spēja uzlabot slodzi n…
Hungarian private linguistic landscape in South-West Slovakia
2014
In the field of Linguistic Landscape research little attention has been paid to the situations where a minoritized group gives the regional majority, such as South-‐West Slovakia where Hungarians form the majority. A clear majority of public signs, also in the region with a Hungarian majority, are only in Slovak, especially in the ‘official’, public sphere. In rural communities, signs posted by private citizens can be relatively frequent, too. In the truly non-‐ commercial private sphere, minorities have autonomy in public language choice. I present the local practices and interpretations of the private linguistic landscape in two ‘Hungarian’ villages in South-‐West Slovakia in the light…
Researching Children’s Multiple Family Relations: Social Network Maps and Life-Lines as Methods
2015
Visual methods are reported to have certain advantages when conducting interviews on sensitive topics, such as intimate spaces, home-related ethical issues, and vulnerable families. In this article, we concentrate on two visual methods: social network maps and life-lines. In our research project on children’s well-being and emotional security in multiple family relations, we collected data by interviewing children and asking them to complete social network maps and life-lines. We discuss the suitability of these two visual methods for describing children’s close relationships with their family members and significant others. Combining these two methods during an interview process with child…
A Moldvai Csángómagyar Oktatási Program kutatása és támogatása vizuális módszerekkel
2018
A Moldvai Csángómagyar Oktatási Program kutatása és támogatása egy több éves (2016– 2021), a Finn Akadémia által támogatott projekt (projektszáma, 299133), amelynek anyaga 30 moldvai településen folyatatott, 2017–2019 között végzett terepmunkából áll. A terepmunka szakaszai során számos vizuális és digitális módszertani eljárás is bevezetésre kerül, s az ezek segítségével készített anyagokból nagy terjedelmű, multimodális adatbázis jön létre. Cikkemben néhány, eddig sikeresnek bizonyult módszert mutatok be, különös tekintettel arra, hogy ezek segítségével hogyan válaszolhatók meg a kutatási kérdéseim. A kötet témájához igazodva kutatásomnak a nyelvitájkép-kutatások között elfoglalt helyét i…
Brain's capacity to detect abstract regularities from visual stimuli under different attentive conditions- an ERP study
2010
Many previous studies have applied oddball paradigm to study change detection. Although changes within single features have been investigated a lot, the changes in multiple feature conjunctions have not. The aim of our study was to investigate with event-related potentials by applying oddball paradigm, whether the brain can detect abstract regularities in visual stimulus stream when two different features are combined - semantic meaning and color. Participants were shown adjective words written in red and blue print in quasi-random order on a computer screen. In an oddball paradigm, 90 % of the words (‘standard’) followed the rule “words printed in red have a negative meaning and the words …