Active clinical trials for "Epiretinal Membrane"

To evaluate the visual acuity, macular thickness, morphological changes after cataract surgery in eyes with previous vitrectomy for macular pucker. Associated risk factors were also investigated.

Epiretinal membrane is common disease, affecting 5~10 % incidence over 60 years old population. It reduce visual acuity, cause metamorphopsia. In the past, vitrectomy and epiretinal membranectomy was indicated in patients with visual acuity less than 20/40, but nowadays with technical improvement and surgical instrument renovation, it seems to have been changed the surgical indication. Therefore, we plan to evaluate the changes of binocular visual acuity, aniseikonia in patients with epiretinal membrane.

Various classification systems have been described for epiretinal membrane (ERM). One of them is a new OCT-based staging scheme based on displacement and reorganization of inner retinal layers called ectopic inner retinal layers (EIFL). We evaluated pre-and perioperative factors related to time for evolution of EIFL.

Fundus autofluorescence (FAF) at the macula originates from hyperfluorescence from retinal pigment epithelium (RPE) and blockage of hyperfluorescence by macular pigment. Investigators evaluate whether presence of FAF may correlate to the postoperative visual outcome for epiretinal membrane.

Since the introduction of vitrectomy in 1971, this procedure has become the third most frequently performed ophthalmic surgery. Approximately 225,000 vitrectomies are performed annually in the United States and indications continue to expand. Known long-term complications of vitrectomy are relatively few and include retinal detachment and cataract formation. Although much has been written in the literature concerning acute rises in intraocular pressure (IOP) in the immediate postoperative period, there is surprisingly little information on long term IOP outcomes after vitrectomy. A recent report by Chang given at the LXII (62) Edward Jackson Memorial Lecture hypothesized a causal relationship between vitrectomy and open-angle glaucoma (OAG) via oxidative stress exacerbated by removal of the crystalline lens. A second report by Luk and colleagues reported similar conclusions in a modified cohort. Both studies, were retrospective in nature and did not perform baseline evaluations to exclude pre-existing glaucoma. Furthermore neither study accounted for natural history. Finally, our analysis has not reproduced similar results. The primary purpose of this study is to analyze the full spectrum of optic nerve and macular changes between vitrectomized study eyes and their non-vitrectomized fellow eyes to control for natural history. Baseline evaluations will include examination by fellowship trained retina and glaucoma specialists, fundus photography, autofluorescence, optical coherence tomography (macula and optic nerve) and automated visual field testing. At 3 month then annually for 5 years after vitrectomy surgery, the cohort will undergo similar evaluation.

Surgical outcome of patients with macular drusen and co-existing abnormalities of the vitreoretinal interface, who routinely undergo pars plana vitrectomy with membrane peeling, is evaluated. Best corrected visual acuity as well as optical coherence tomography data are compared at baseline and last follow up. The rate of development of choroidal neovascularization postoperatively is noted.

Several optical coherence tomography (OCT) biomarkers with potential to influence postsurgical outcomes after vitrectomy with membrane peeling for idiopathic epiretinal membranes (iERM) have been described in single predictor analyses in the past. Aim of the study is to assess the reliability of diagnosis of OCT biomarkers and to calculate their impact on postsurgical visual acuity in a multiple regression analysis.

Many patients will have underlying maculopathy present when undergoing cataract surgery, which are not visible on fundoscopy alone. Knowledge of this underlying pathology will allow an improved consenting process and discussion with the patient regarding the risks, visual prognosis and recovery following cataract surgery. Incidental findings in the fellow eye would also allow for improved diagnosis and management of these patients without adding significant additional time to specialist high volume cataract assessment clinics.

Numerous terms have been used to describe epiretinal membrane (ERM): macular pucker, epimacular membrane, surface-wrinkling retinopathy, cellophane maculopathy and preretinal macular fibrosis. It is, by definition, a fibrocellular tissue found on the inner surface of the retina. It is semi-translucent and proliferates on or above the surface of the internal limiting membrane. It causes blurring and metamorphopsia, while mild cases are often asymptomatic. ERM presence can degrade the acuity and the quality of vision, thus affecting the quality of life. There is evidence that it also has an adverse impact to the treatment options for patients suffering from macular disorders. More specifically, regarding to diabetic retinopathy, ERM seems to have a bidirectional etiopathogenetic relationship with its course and complications. The aim of this study is to know the prevalence of ERM in the Brussel's population, the risk factors predisposing to ERM formation and if diabetic patients have a significantly higher prevalence of ERM in comparison to general population.

To conduct a precision study to assess the microperimetry function of the Spectral OCT/SLO. The study will assess variability across measurements taken by three different operator-device configuration across clinical sites, variability between subjects within a given operator-device configuration, and variability within a subject for a single operator-device configuration.