Search results for "macula"
showing 10 items of 345 documents
The role of geitonogamy in the reproduction success of a nectarless dactylorhiza maculata (orchidaceae)
2011
Dactylorhiza maculata is a common terrestrial orchid in Finland. It is nectarless and the seed production is relatively high for a deceptive species. The pollinators of D. maculata do not have frequent visits to the flowers, but the species is capable of over 50 % seed capsule production. Geitonogamy is the transfer of self pollen between flowers on the same individual. It is typical that the pollinators of deceptive inflorescences visit only few flowers and have short stays in them, and therefore it is commonly thought that geitonogamy is infrequent among deceptive species. I examined the role of geitonogamy in the seed production of D. maculata. I prevented geitonogamy in male-sterilizati…
Pharmacokinetics of Intravitreal Anti-VEGF Drugs in Age-Related Macular Degeneration
2019
Intravitreal administration of anti-vascular endothelial growth factor (VEGF) antibodies has become the standard treatment for Age-Related Macular Degeneration; however, the knowledge of their pharmacokinetics is limited. A comprehensive review of the preclinical and clinical pharmacokinetic data that were obtained in different studies with intravitreal bevacizumab, ranibizumab, and aflibercept has been conducted. Moreover, the factors that can influence the vitreous pharmacokinetics of these drugs, as well as the methods that were used in the studies for analytical determination, have been exposed. These anti-VEGF drugs present different charge and molecular weights, which play an importan…
La Concepción de María en el tiempo. Recuperación de fórmulas tempranas de representación de la Inmaculada Concepción en la retórica visual del virre…
2014
This paper addresses a genuine aspect of conceptionist visual rhetoric during the Viceroyalty of New Spain: the recycling of Immaculate Conception earlier types of representation that, with the consolidation of the image of the Immaculate derived from the Tota Pulchra, had fallen deprecated in the peninsular art. The tendency of artists and patrons towards these typologies reveals a key aspect to understand the definition of Hispanic culture during the centuries of the Baroque. In the peripheral areas of the Empire, instead of continuous affirmation of the existence of a single Hispanic world, the springs of control over the religious image allowed variability in the implementation of the C…
Type 1 macular telangiectasia
2018
L’identification à l’examen clinique de petites dilatations anévrismales et d’ectasies paracentrales fait évoquer le diagnostic de télangiectasies maculaires. Celles-ci sont le plus souvent secondaires à une pathologie, notamment au diabète, aux occlusions veineuses, aux vascularites, à un néovaisseau choroïdien de type 3, etc. Le contexte et le reste de l’examen identifieront généralement l’affection primitive. Les télangiectasies maculaires de type 1 (MacTel 1) sont idiopathiques sans cause retrouvée. Ce sont des affections rares, en grande majorité unilatérales, touchant préférentiellement l’homme d’âge moyen (1).
Retinal Detachments Following Successful Idiopathic Macular Holes Surgery
2009
Purpose: : To evaluate long term outcome of successfully operated idiopathic macular holes (IMH).Methods: : We conducted a comparative retrospective case series in two academic centers. IMH were operated with pars plana vitrectomy, intravitreal gas and internal limiting membrane peeling between 2002 and 2005. All these macular holes were analyzed with Stratus OCT before and after the surgery. We divided them into 4 groups: group 1: vitrectomy in pseudophakic eyes; group 2: vitrectomy and cataract extraction as a combined procedure; group 3: vitrectomy followed by cataract extraction; group 4: vitrectomy in pseudophakic eyes. We noted the anatomical and functional results and we studied seri…
Maculare Pseudoforamenund Bestehen Hyaloider Arterien in Stark myelinisiertem retinalen Nervengewebe
2008
Fungal Necrotizing Scleritis After Intravitreal Injection Therapy
2020
PURPOSE To report a case of infectious necrotizing scleritis secondary to Aspergillus terreus after intravitreal injection therapy. METHODS This is a case report with literature review. RESULTS A 98-year-old woman receiving intravitreal aflibercept injections for neovascular age-related macular degeneration in the left eye presented with severe pain, redness, and purulent discharge at the injection site. She was initially treated with topical fortified antibiotics, and clinical improvement was achieved, although microbial cultures showed negative results. Two months later, she presented with severe ocular pain and was diagnosed with anterior necrotizing scleritis. Scleral scrapings were col…
Need to consensus for novel findings by optical coherence tomography in patients with age-related macular degeneration
2012
Macular edema: Miscellaneous.
2010
International audience; Abstract. This article provides the reader with practical information to be applied to the various remaining causes of macular edema. Some macular edemas linked to ocular diseases like radiotherapy after ocular melanomas remained of poor functional prognosis due to the primary disease. On the contrary, macular edemas occurring after retinal detachment or after some systemic or local treatment use are often temporary. Macular edema associated with epiretinal membranes or vitreomacular traction is the main cause of poor functional recovery. However, the delay to observe a significant improvement of vision after surgery should be long, as usually observed in tractional …
Assessment of environmental AMD risk factors in a population of patients suffering from stroke and myocardial infarction
2010
International audience; Purpose: Stroke and myocardial infarction are common diseases occurring in patients suffering from Age Macular Degeneration (AMD). We assessed the rate of AMD and AMD risk factors in patients suffering from recent stroke or myocardial infarction. Methods: Patients suffering from a recent stroke or myocardial infarction (less than 1 month) benefited from a thorough ophthalmic examination with the following measurements and evaluations: visual acuity, intraocular pressure, fundus photography, Raman spectroscopy and macular OCT. In the same time a food questionnaire was dispensed. Finally, blood samples to measure fatty acids and lutein were performed. Results: 74 patie…