View clinical trials related to Fuchs' Endothelial Dystrophy.
Filter by:Fuchs endothelial corneal dystrophy (FECD) is a progressive disease characterized by the loss of endothelial cells, thickening of Descemet's membrane and deposition of extracellular matrix in the form of guttae. This result in failure of the endothelium to support corneal deturgescence leading to corneal edema. Affected patients complain about blurred vision at early stages of the disease which can progress to blindness. The pathophysiology of the disease is still unclear, but several studies point towards a genetic susceptibility. Additional risk factors that have been identified are female sex, smoking and older age. While for a long time penetrating keratoplasty (PKP) was the only therapy available for affected patients, in the recent years less invasive methods such as descemet's membrane endothelial keratoplasty (DMEK) have been developed. In DMEK, only the Descemet's membrane and the endothelium is removed and replaced with the corresponding parts from a donor's cornea. For FECD, this brings the advantage that only the diseased part of the cornea is replaced. Graft detachment has been identified as the main complication following DMEK. In the investigators' study, an ultra high resolution OCT system will be used to detect graft detachment in patients with FECD after DMEK. With this technique, even small detachments can be visualized. The area of graft detachment will be evaluated at predefined time points after surgery and correlated to visual acuity. A follow-up of one year will be performed in order to investigate the predictive value of graft adherence status at several time points for visual outcome.
To assess and compare the complications and results of different lamellar endothelial keratoplasty techniques and its variations.
Optical coherence tomography (OCT )provides high resolution information regarding the anatomic structure of the tissues of the eye in a cross-sectional and 3 dimensional view. Much of this information is not able to be visualized by a clinician. Utilizing this information during surgery will allow for the ophthalmic surgeons to better understand how surgical procedures impact the anatomic structure of the eye. In this study an OCT device that has been built into the microscope (rather than mounted on the side or held in the surgeon's hand) and will be utilized to take images at various milestones during surgery to assess feasibility and potential utility of this technology. Since it is built into the microscope, there are potential significant advantages over a separate system including increased efficiency, improved working distance, and the ability to visualize tissue-instrument interactions.
OCT provides high-resolution information regarding the anatomic structure of the tissues of the eye in a 2-dimensional and 3-dimensional view. Much of this information is not able to be recognized by a clinician. Utilizing this information during surgery will allow for ophthalmic surgeons to better understand how surgical procedures impact the anatomic structure of the eye.
Clinical observation to confirm the clinical safety and efficacy of ODM 5 in the treatment of corneal edema caused by Fuchs' endothelial dystrophy.
A pilot study designed to assess the feasibility of planned descemetorhexis for the treatment of Fuchs' corneal dystrophy.
We have developed novel Brillouin microscopy and we are testing its potential for keratoconus and ectasia diagnostics. We plan to perform axial scans of the cornea in human volunteers in order to compare biomechanical properties of Keratoconus vs. Normal corneas and compare biomechanical properties of post-LASIK ectasia vs. normal corneas.
The proposed study will recruit patients with mild to moderate Fuch's dystrophy who need cataract surgery alone. They will be randomly assigned to receive either spheric or aspheric lenses. If both eyes of a patient need surgery, we will implant the same type of lens in each eye in order to prevent imbalanced vision. We will measure their contrast sensitivity and higher order aberrations before surgery and 3 months after surgery. We will compare the change in these values between the two groups.
The purpose of this study is evaluate the outcome after posterior lamellar keratoplasty (DMEK and Ultra-thin DSAEK) for corneal transplantation.
Background Fuchs' Endothelial Dystrophy Fuchs' Endothelial Dystrophy (Fuchs' ED) is characterized by changes on the inside of the cornea, which leads to a substantial decline in visual acuity. The only effective treatment option for Fuchs' ED is corneal transplantation. Corneal transplantation Corneal transplantation surgery has seen major advances in the last decade, and the Descemet's Stripping Automated Endothelial Keratoplasty (DSAEK) procedure has now become the preferred method. Outcome There have been a substantial number of publications on outcome after DSAEK surgery, and the procedure has several advantages over the former preferred method of transplantation, penetrating keratoplasty (PK). Despite the apparent success of the DSAEK procedure, visual acuity is seldom fully restored even in otherwise healthy eyes. Several studies have tried to clarify this matter but so far results have been conflicting. Hypotheses 1. The reduction in visual acuity and contrast sensitivity in patients with Fuchs' endothelial dystrophy is correlated with corneal thickness, corneal light scatter, and the type and magnitude of optical disrupting guttae in Descemet's membrane. 2. The subjective visual function after corneal transplantation with a posterior lamellar graft is correlated with the optical properties of the grafted cornea (thickness, light scatter, irregularities on the anterior, and posterior corneal surfaces) Materials and methods In a controlled prospective trial of DSAEK patients, we aim to register different morphological patterns, monitor visual performance and optical parameters. Three sex and age-matched groups will be compared: Group 1: 40 patients that undergo DSAEK surgery Group 2: 40 patients that undergo combined cataract and DSAEK surgery. Group 3: Control group of 40 patients with normal corneas that undergo cataract surgery.