Active clinical trials for "Keratitis"

In order to develop an innovative device to study infectious keratitis, we need to illuminate the cornea of patients suffering from an infectious keratitis with red or near-infrared light. Because of technical reasons the shortest possible wavelength (red) presents advantages.

To determine the efficacy and safety of nerve growth factor in the treatment of limbal stem cell deficiency (LSCD) associated with neurotrophic cornea.

This study is an observational prospective cohort study which aims to generate an antibiogram and to assess the clinical responses and outcomes of microbial keratitis patients, treated with empiric topical antimicrobial therapies, with the main objective being to recommend the most effective empiric therapy. Microbial keratitis patients are attending the Cornea Outpatient Clinic at Alexandria Main University Hospital, Alexandria, Egypt.

Purpose: To evaluate the clinical outcome of patients with refractory Neurotrophic Keratopathy (NK) in stages 2 and 3 treated with topical insulin. Methods: A retrospective, observational analysis of eyes with NK in stages 2 and 3 refractory to standard medical and/or surgical treatment which were treated with topical insulin. Topical insulin (1 unit per mL) was applied 4 times a day; treatment was continued until persistent epithelial defect (PED) or ulcer resolved and then tapered accordingly. The primary outcome of the study was the complete resolution of the PED or ulcer. Best-corrected visual acuity (BCVA), days until complete resolution as well as anterior segment photographs were obtained.

This study will be used to support assessment of AIR OPTIX® NIGHT & DAY® AQUA (AONDA) Soft Contact Lenses' safety and performance in accordance with updated European Union Medical Device Regulation (EU MDR) requirements.

This is a prospective, randomized clinical trial looking to determine the role of prophylactic treatment with topical corticosteroids in preventing recurrences in patients with a history of infectious epithelial keratitis, stromal keratitis,endotheliitis, or iridocyclitis. Patients will be enrolled to one of two treatment arms: Control arm: oral acyclovir 400 mg BID OR valacyclovir 500 mg daily or Study arm: oral acyclovir 400 mg BID OR valacyclovir 500 mg qdaily + topical corticosteroid eye drops.

This study explores the association between single nucleotide polymorphism (Met11Thr) of surfactant protein D(SP-D) and susceptibility and prognosis of infectious keratitis.Met11Thr of SP-D of patients with keratitis and normal controls were compared.Allele and genotype frequencies of patients with keratitis and normal controls were determined by polymerase chain reaction with sequence specific primers(PCR-SSPs) .SP-D gene polymorphism of patients with keratitis and normal controls was detected by Sanger sequencing

This retrospective chart review study compares the incidence of corneal inflammation due to infection in children vs. adult patients wearing overnight corneal reshaping lenses.

This study will examine the structure of the receptor molecule for the herpes simplex virus (HSV) and determine if the receptor's structure is related to susceptibility to infection with the virus. There are two types of herpes virus-HSV-1 and HSV-2. HSV-1 commonly causes cold sores, and HSV-2 usually causes genital herpes. The herpes virus enters (infects) cells through protein molecules on the cell's surface. This study will explore possible differences between the structure of the HSV receptor molecule in different people to understand better how infection occurs. The study will also look at proteins on white blood cells (Fc receptors, cytokines and mannose binding protein) that may influence the risk of infection with HSV. Information from this study may lead to new treatments to prevent HSV infection. People 18 years of age and older who are infected with HSV and people who are not infected with the virus may be eligible for this study. Participants will have blood drawn to confirm whether or not they have been infected with the virus. The blood sample will also be used to study the genes for the HSV receptor, Fc receptors, cytokines, mannose binding protein and related proteins on the white blood cells. No more than 40 milliliters (8 teaspoons) of blood will be drawn. Participants who are found to have antibodies to HSV-2 will be offered counseling and advice on practicing safe sex techniques to help prevent sexually transmitted diseases, including HSV-2 infection.

Design: Prospective observational diagnostic study and methods-comparison. Aims: The overall aim of the project is to better define the pathogenic microorganisms in patients with microbial keratitis (MK) through a better understanding of the corneal and ocular surface microbiome in health and disease. This will be achieved through the following objectives: Using NGS, analyse the corneal microbiome of the affected and unaffected eye of patients with and without MK and compare with simultaneous results from CDC and MTPCR. Determine the microbiological spectrum of the cornea, ocular surface and contiguous structures, in patients with MK, healthy controls, contact lens wearers and eye drop users. Outcome measures: A comparison of isolation rates and identified bacteria obtained from CDC, MTPCR and NGS processing of MK corneal samples will be made. Microorganisms identified in the eyes with MK will be compared to the fellow eye and other control groups and subtractive bioinformatics methodology applied to identify the most likely pathogenic organisms compared to those seen in the healthy corneal and ocular surface microbiome. Comparisons of the relative abundance of microorganisms obtained from MK corneal samples over the participant's follow-up visits will be used to evaluate longitudinal changes in the corneal and ocular surface microbiome during treatment and resolution of MK. A direct comparison between the relative abundance of microorganisms isolated from participants cornea, conjunctiva, eyelids and nose (contiguous structures) will be made to identify any possible endogenous sources of infection for MK. Population Eligibility: All patients aged 18 years and over presenting with unilateral clinically suspected MK to St. Paul's Eye Unit, The Royal Liverpool University Hospital. Patients with keratoconus undergoing cross-linking, subjects with no history of MK, subjects with no history of MK who are contact lens wearers and subjects with no history of MK but who are on eye drop treatment for glaucoma. Duration: Three years.