View clinical trials related to Macular Degeneration.
Filter by:The purpose of this study is to evaluate the effects and safety of ranibizumab therapy combined with TA versus ranibizumab monotherapy in patients with polypoidal choroidal vasculopathy (PCV). Furthermore, the pharmacogenetics effect of inflammatory related genes polymorphism in response to the treatments. To further confirm the role of inflammatory factors in the pathogenesis and advance of PCV.
The study will evaluate the efficacy and safety of two different regimens of Conbercept (Treat-and-Extend (T&E) Regimen vs. Pro Re Nata (PRN)) in patients with wet AMD. This study is to provide long-term safety data in the treatment of patients with wet Age-related Macular Degeneration (AMD).
To evaluate the effectiveness of subthreshold laser treatment on retinal sensitivity in patients with reticular pseudodrusen and incipient Geographic Atrophy (GA) secondary to Age-Related Macular Degeneration (AMD). Secondary objective is to investigate changes in best-corrected visual acuity, atrophy progression and safety.
This study is being conducted to compare two different genetic tests developed to determine an individuals risk of developing serious vision threatening complications from age-related macular degeneration (ARMD).
Age-Related Macular Degeneration (ARMD) is the most common cause of blindness in the adult population of the Western World. It affects the macula - the region of the retina most rich in photoreceptors and responsible for central vision. The ethiology of ARMD remains poorly understood. Population-based studies have demonstrated a complex ethiology, with contributions from a combination of genetic and environmental factors. Two major forms of ARMD are clinically distinguishable: the dry and wet form. The latter represents the more aggressive clinical subgroup, and is characterized by the abnormal growth of new blood vessels (neovascularization) under the macula, thus leading to the accumulation of fluid under the retina, bleeding, progression to fibrosis, and finally loss of central vision. The pathogenesis of this neovascularization is not fully understood, although the VEGF pathway is well known to be involved in angiogenesis and was implicated in the development of the new vessels under the macula. The VEGFs are the most specific and potent stimulators of the angiogenesis. Molecules that bind and inactivate the VEGF have been developed for the treatment of ARMD and they are applied in ARMD clinic through intra vitreal injections.The difference seen in response to anti VEGF treatment for ARMD between the patients is suggestive for the presence of factors influencing the effect of the drug. Some of these could be genetic variants within genes involved in ARMD pathogenesis or VEGF pathway. Few associations with markers within genes previously found to be related with the pathogenesis of ARMD have been found. It remains unknown whether variants involved in the anti VEGF treatment response could influence the therapeutic outcome. The purpose of this trial is to evaluate the association between a panel of selected polymorphic markers in the VEGF pathway and the response to therapy with anti VEGF antibody for ARMD. The hypothesis is that the individual genotype influences the response to the anti VEGF. This can lead to identification of genetic biomarkers allowing treatment individualization and optimization of the visual outcomes.
This project intends to transplant human embryonic stem cells derived retinal pigment epitheliums into subretinal space of patients to treat dry age-related macular degeneration(dry-AMD).And we will assess the safety and efficacy of RPE transplants to treat dry AMD.
The purpose of this study was to determine the safety and therapeutic effect of sub-retinal transplantation of human embryo stem cell derived retinal pigment epitheliums (hESC-RPE) in patients with macular degeneration diseases, and explore new treatment modalities for macular degeneration diseases (Age-related macular degeneration and Stargardt's macular dystrophy).
To assess the five-year incidence of AMD in a population from the central region of Portugal, previously phenotypically characterized.
The aim is to study the use of Ocusweep system especially in driving health evaluation and compare the results produced by Ocusweep system to those of conventional devices. The main focus is in patients suffering from wet age-related macular degeneration. The study aims to find out how frequently these patients do not meet the European Union health criteria of safe driving and how Ocusweep finds these patients from a population of patients being treated in a busy medical retina clinic. The tests of Ocusweep system are compared against conventional visual field tests, contrast sensitivity tests, visual acuity tests and tests showing anatomical changes related to wet age-related macular degeneration (optical coherence tomography, fundus photography and fluorescein or indocyanine green angiography).
This multicenter open-label extension study is designed to evaluate the safety and tolerability of lampalizumab intravitreal injections in participants with GA secondary to age-related macular degeneration (AMD) who completed 96 weeks of treatment in Studies GX29176 (NCT02247479) or GX29185 (NCT02247531). The extension will enroll participants from the parent studies who received investigational lampalizumab, as well as lampalizumab-naive participants exposed to sham comparator. All participants will receive open-label lampalizumab in the present study.