View clinical trials related to Corneal Ulcer.
Filter by:The proposed Conventional Cohort Expansion Study involves the use of Mesenchymal Stromal Cells (MSCs) are derived from the bone marrow. We previously studied the safety of subconjunctival injection of allogeneic bone marrow-derived MSCs in patients with nonhealing epitheliopathy (IRB Protocol 2020-0334). In the present study, we want to study the efficacy of this treatment on chronic epitheliopathies.
Eye infection is a prevalent problem in primary care and remains a crucial healthcare concern. According to the American Academy of Ophthalmology (AAO), herpes simplex virus (HSV) keratitis (HSK) is the leading cause of infectious blindness worldwide . HSK is defined as a corneal inflammatory condition caused by the HSV infection . The global incidence of herpetic keratitis is estimated at 1.5 million per year, resulting in 40,000 new cases of severe visual impairment associated with corneal scarring and opacification . HSV type I (HSV-1) is by far the most predominant causative pathogen of eye infections]. HSV-1 is also known for causing orolabial herpes, HSV folliculitis, herpes gladiatorum, herpetic whitlow, and eczema herpeticum . HSV can be transferred to the eye by touching an active lesion and then the eye. The National Health and Nutrition Evaluation revealed a seroprevalence of HSV-1 in 53.9% of 14-49 year olds, and 90% of adults 50 years or older , indicating that the majority of the population has been exposed to this virus thus are at risk of developing HSK. In this study we evaluate the efficacy of different treatment modalities on viral keratitis HSK.
This clinical study was conducted to evaluate the efficacy and safety of gold-silver cuprous oxide composite nanogels combined with photothermal therapy system in the treatment of severe drug-resistant bacterial keratitis ineffective by traditional antibiotic treatment in human eyes, and to provide translational applications. Based on the clinical evidence, a more effective and safe innovative treatment plan for corneal diseases has been developed.
This study is being conducted to evaluate the safety and effectiveness of using the PXL Platinum 330 System with riboflavin solution for performing corneal collagen crosslinking (CXL) for the treatment of previously untreated corneal ulcers. The PXL Platinum 330 System is a combination product consisting of an ultraviolet A (UV-A) 365 nm wavelength light source (PXL Platinum 330 Illumination System) and riboflavin (Riboflavin 0.23% PESCHKE-L Solution) administered in conjunction with the UV-A light as a photosensitizer. The PXL Platinum 330 System is intended to induce corneal collagen CXL to improve the biomechanical properties of the cornea by strengthening the corneal tissue in the anterior stroma. Corneal collagen CXL is performed by pretreating the cornea with riboflavin ophthalmic solution beginning 40 min before UV-A light exposure to saturate the corneal tissue with the riboflavin photosensitizer. The cornea is then irradiated with UV-A light (365 nm) at an irradiance of 18 mW/cm2 (5 seconds on, 5 seconds off) for 10 min. Exposure of the cornea to this UV-A light regimen after topical administration of riboflavin ophthalmic solution has been shown to induce CXL of the corneal collagen fibrils, with a resultant increase in tensile strength and diameter of the collagen fibrils. Clinically, CXL has been shown to stabilize the corneal curvature in eyes with progressive keratoconus, with no significant change in the refractive index of the cornea. Numerous reports and a few clinical trials have also shown benefit in aiding resolution of infective corneal ulcers.
This study is being conducted to evaluate the safety and effectiveness of using the PXL Platinum 330 System with riboflavin solution for performing corneal collagen crosslinking (CXL) for the treatment of refractory corneal ulcers. The PXL Platinum 330 System is a combination product consisting of an ultraviolet-A (UV-A) 365 nm wavelength light source (PXL Platinum 330 Illumination System) and riboflavin (Peschke Riboflavin 0.25% Transepithelial Solution) administered in conjunction with the UV-A light as a photosensitizer. The PXL Platinum 330 System is intended to induce corneal collagen CXL to improve the biomechanical properties of the cornea by strengthening the corneal tissue in the anterior stroma. Corneal collagen CXL is performed by pretreating the cornea with riboflavin 0.25% ophthalmic solution beginning 40 min before UV-A light exposure to saturate the corneal tissue with the riboflavin photosensitizer. The cornea is then irradiated with UV-A light (365 nm) at an irradiance of 18 mW/cm2 (5 seconds on, 5 seconds off) for 10 min. Exposure of the cornea to this UV-A light regimen after topical administration of riboflavin (0.25%) has been shown to induce CXL of the corneal collagen fibrils, with a resultant increase in tensile strength and diameter of the collagen fibrils. Clinically, CXL has been shown to stabilize the corneal curvature in eyes with progressive keratoconus, with no significant change in the refractive index of the cornea. Numerous reports and a few clinical trials have also shown benefit in aiding resolution of infective corneal ulcers.
Neurotrophic keratitis (NK) is a condition where the cornea, or clear outer covering of the eye, has reduced sensation due to a variety of reasons. In more advanced cases of NK, the cornea can develop an area of thinning called an ulcer. The purpose of this research is to find out if Oxervate (cenegermin-bkbj 0.002%) an FDA-approved treatment for neurotrophic corneal ulcers leads to an increase in thickness of the corneal stroma (middle layer of the cornea) during and after treatment of a neurotrophic ulcer. Corneal thickness will be measured using optical coherence tomography (OCT), a non-contact imaging device used routinely in ophthalmology examinations. Corneal sensation will also be measured during and after treatment with a device called a Cochet-Bonnet esthesiometer to see if the treatment increases corneal sensation.
The cornea is the clear layer in front of the iris and pupil. It protects the iris and lens and helps focus light on the retina. Corneal diseases are serious conditions that can cause clouding, distortion, scarring and eventually blindness. There are several types of corneal disease with keratoconus being one of the most prominent. Keratoconus is a weakening and thinning of the central cornea. This thinking causes the cornea to develop a cone-shaped deformity leading to vison loss. Keratoconus is usually bilateral affecting people between 10 and 25. This project aims to collect data on patient suffering with corneal diseases and the treatments they receive, including corneal transplantation, over a period of time during routine clinical practice. A clinical registry such as this can be a very useful tool to provide a real-world view of clinical practice, patient outcomes, safety, and comparative effectiveness. •Methods: Data will be collected from the medical records of patients who have suffered from corneal disease and have undergone treatment in the Ophthalmology department of the CHU Montpellier. A standardized set of data will be collected for all patients. This will include, demographic and social date such as lifestyle and occupation, current and past pathologies and treatment received. This is data that is already collected as part of routine clinical practice. This will be an ongoing registry with the aim of collecting the maximum data possible. The more patients that are entered and the longer the follow up for each patient, the more valuable the data will become. •Discussion: The aim of this registry to help create a better understanding of variations in treatment and outcomes; to examine factors that influence prognosis; to describe treatment patterns, including appropriateness and effectiveness of treatment and disparities in the delivery of care; to monitor safety and harm and to measure quality of care. In the long term the data collected in the registry may serve as a basis for the development of evidence-based clinical management guidelines to help clinicians deliver the most appropriate treatment for corneal diseases in the safest and most efficient manner.
The aim of this study is to see if multiplex strip PCR will detect the pathogen that causing eye infection from the corneal scraping samples with higher sensitivity and specificity than the current gold standard.
The purpose of this study is to demonstrate the safety and efficacy of the corneal collagen crosslinking with riboflavin and ultraviolet A in aim to increase the resistance of the graft used as a support for the Boston keratoprosthesis (KPro) type I against corneal melting (keratolysis or sterile necrosis).
Corneal melt is a complication that could affect very ill eyes and lead to the thinning of the cornea (the clear window covering of the eyes). This thinning can lead to severe consequences such as the leakage of the liquid inside the eye (ocular perforation), or even blindness. Corneal melt can be caused by certain infections or as a sterile process. This project only includes patients with a sterile corneal melt (without an infection) caused by diseases such as rosacea, Sjogren's syndrome, rheumatoid arthritis, Crohn's disease, Stevens Johnson syndrome, as well as toxic epidermal necrolysis or mucous membrane pemphigoid. Infliximab is an antibody against tumour necrosis factor alpha and has been used to treat or prevent corneal melt in certain patients with inflammatory of auto-immune disease. In this situation, infliximab was used intravenous (using veins) in order to treat the whole body. This study's hypothesis is that infliximab can safely be used as eye drops for the treatment of sterile corneal melt.