Search results for "DETA"
showing 10 items of 332 documents
Delayed Suprachoroidal Hemorrhage After Pars Plana Vitrectomy: Five-Year Results of a Retrospective Multicenter Cohort Study
2015
Purpose To determine the incidence, risk factors, and outcomes of delayed suprachoroidal hemorrhage after vitrectomy. Design Retrospective multicenter cohort study. Methods All consecutive patients who underwent primary vitrectomy, from January 2009 to December 2014, at 4 tertiary vitreoretinal centers in Italy were enrolled. Patient demographics and systemic, ophthalmic, operative, and postoperative data from all centers were extracted from the electronic record system using standardized data collection forms. All eyes that developed delayed suprachoroidal hemorrhage within 48 hours of the end of the vitrectomy were identified as the delayed suprachoroidal hemorrhage group; all other eyes …
Preoperative, Intraoperative and Postoperative Corticosteroid Use as an Adjunctive Treatment for Rhegmatogenous Retinal Detachment
2020
The treatment for rhegmatogenous retinal detachment (RRD) is surgery, including pars plana vitrectomy (PPV) and scleral buckling (SB). Despite surgical advances, degeneration of the photoreceptors and post-operative complications, such as proliferative vitreoretinopathy (PVR), often occurs as the result of inflammation, preventing complete visual recovery or causing RRD recurrence. There is increasing evidence that in the presence of RRD, the activation of inflammatory processes occurs and the surgery itself induces an inflammatory response. This comprehensive review focuses on the use of different formulations of corticosteroids (CCS), as an adjunctive treatment to surgery, either PPV or S…
Endogene Candida-Endophthalmitis bei Patienten mit schweren Allgemeinerkrankungen
2005
Background: Endogenous Candida endophthalmitis is a rare disease with increasing frequency and poor prognosis. Patients and Methods: The course of endogenous Candida endophthalmitis in 7 eyes of 5 patients (age 2 months to 76 years) was evaluated. Underlying general diseases were diagnosed as colon cancer, diverticulitis, pancreatic insufficiency (with subclavian catheter), ileus and diabetes mellitus. Diagnosis was based on the very typical ocular feature combined with a positive blood or vitreous culture. Intensive antimycotic drug therapy was initiated and pars plana vitrectomy performed as soon as possible. Results: The delay between onset of ocular symptoms and diagnosis amounted to on…
Pars-Plana-Vitrektomie bei diabetischen Traktionsamotiones mit Foramen
2000
PURPOSE: To evaluate results and prognostic factors of pars-plana vitrectomy (ppv) using membrane peeling and C2F6-gas for diabetic traction retinal detachments with a hole. METHODS: We retrospectively reviewed the healing course of 84 eyes, which were treated in this way consecutively (follow-up 6-32 month). C2F6 was always used in case of a retinal hole at the posterior pole or in the upper part of the eye. The influence of HBA1c, type of diabetes, preoperative visual acuity, preoperative laser-coagulation and macular status over treatment results and rate of complications were studied using multivariate logistic regression analysis. RESULTS: Preoperatively 56% of the eyes showed premacul…
Vascular changes after vitrectomy for rhegmatogenous retinal detachment: optical coherence tomography angiography study
2020
Purpose: To analyse the postoperative foveal avascular zone (FAZ) area, superficial vessel density (SVD) and deep vessel density (DVD) and their correlation with functional (best-corrected visual acuity, BCVA) and anatomical outcomes (foveal macular thickness, FMT) after surgery for rhegmatogenous retinal detachment (RRD) repair. Method: Patients with RRD eyes, successfully treated with a single pars plana vitrectomy (PPV) with gas tamponade and a minimum 12 months follow-up, were re-examined. Foveal avascular zone (FAZ) area, SVD, DVD and FMT were evaluated by using optical coherence tomography angiography (OCTA) and compared to fellow eye. Results: Fifty-six patients with macula-on and 37…
Retinal detachment with spontaneous dialysis of the ora serrata in a 13-year-old child with neurofibromatosis type 1: a case report.
2020
A 13‑year‑old child diagnosed with neurofibromatosis type 1 who on a routine control presented with rhegmatogenous retinal detachment associated to dialysis of the ora serrata in the left eye (OS). There were no clinical signs or history of contuse ocular trauma. Neurofibromatosis produces alterations in fibroblasts of the cortex of the vitreous base. This results in deficient production of the collagen fibers that anchor the vitreous base to the pars plana and the peripheral neurosensory retina. Thus, suboptimal function of the fibroblasts explains spontaneous avulsion of the vitreous base. Such avulsion in turn is related to dialysis of the ora serrata.
MĀCĪBU TĒMAS “FANTASTISKE TĒLI DAŽĀDĀS KULTŪRĀS” APGUVE VIZUĀLAJĀ MĀKSLĀ 7. KLASĒ
2022
Darba autore Inga Rozīte izstrādājusi diplomdarbu, mācību tēma “Fantastiskie tēli dažādās kultūrās” apguve vizuālajā mākslā 7. klasei. Diplomdarba mērķis ir izpētīt mācību tēmas “Fantastiskie tēli dažādās kultūrās” īstenošanas iespējas 7. klasē vizuālajā mākslā.. Lai mērķi sasniegtu tiek izvirzīti vairāki uzdevumi, kuru ietvaros autore pēta un apraksta fantastisko tēlu radīšanu un autoru daiļradi. Veic pedagoģisko uzdevumu izpēti, analizē darba rezultātus un izstrādā secinājumus. Uzdevumi ir izpētīt literatūras un informācijas avotus, izveidot mācību saturu tēmai, izveidot vērtēšanas kritērijus, uzskates materiālus tēmas apguvei un aprobēt mācību saturu. Atslēgvārdi: formas siluets un rakst…
Retinopathy of prematurity-current diagnosis and management
1993
Despite advances in ophthalmological care of premature infants, retinopathy of prematurity (ROP) remains a still unsolved problem for paediatricians as well as ophthalmologists. A survey of the current literature concerning drug therapy and surgical management as related to the different stages of ROP is given. The classification system for ROP according to the International Committee is presented as well as our screening policy in relation to the literature. The effectiveness in preventing severe cases of ROP and the toxicity of vitamin E supplementation in high-risk premature infants is still disputed and no recommendations can be given. Cryotherapy is recommended in symmetric cases of st…
Thermodynamic Approach to the Self-Diffusiophoresis of Colloidal Janus Particles
2019
Most available theoretical predictions for the self-diffusiophoretic motion of colloidal particles are based on the hydrodynamic thin boundary layer approximation in combination with a solvent body force due to a self-generated local solute gradient. This gradient is enforced through specifying boundary conditions, typically without accounting for the thermodynamic cost to maintain the gradient. Here, we present an alternative thermodynamic approach that exploits a direct link between dynamics and entropy production: the local detailed balance condition. We study two cases: First, we revisit self-propulsion in a demixing binary solvent. At variance with a slip velocity, we find that propuls…
Probing Rydberg atoms through collisions with helium in the presence of static electric and magnetic fields
2005
We report on field induced inelasticity effects in state-to-state transitions caused by collisions of helium with Rydberg atoms in the presence of parallel static electric and magnetic fields. Due to the phases accumulated by the wavefunctions of the states involved into the collision events, the transition cross sections plotted as a function of the external fields exhibit modulations. When the relative velocity of the colliding atoms is high enough, these modulations are wiped out, while sizable modifications of the cross sections may take place due to the alteration of the wavefunctions' spatial localization. The possibility of using the field-assisted collisions as a probe giving inform…