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Acanthamoeba Keratitis clinical trials

View clinical trials related to Acanthamoeba Keratitis.

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NCT ID: NCT03484507 Recruiting - Clinical trials for Acanthamoeba Keratitis

Parasitic Ulcer Treatment Trial Pilot

Start date: January 1, 2018
Phase: Phase 2
Study type: Interventional

This is a study of optimal treatments for acanthamoeba keratitis. In the first part of the study, participants will be randomized to chlorhexidine monotherapy or chlorhexidine plus povidone iodine. After four weeks of therapy, participants will be re-randomized to early corticosteroids, later corticosteroids, or placebo.

NCT ID: NCT03461978 Enrolling by invitation - Glaucoma Clinical Trials

Ultrahigh-resolution Optical Coherence Tomography Imaging of the Anterior Eye Segment Structures

Start date: July 12, 2017
Phase: N/A
Study type: Interventional

The development of optical coherence tomography (OCT) and its application for in vivo imaging has opened entirely new opportunities in ophthalmology. The technology allows for both noninvasive visualization of the morphology and measurement of functional parameters within ocular tissues to a depth of a few millimetres even in nontransparent media. Until now the resolution of commercially available OCT systems is, however, much lower than that provided by light microscopy. Recently, an ultrahigh-resolution OCT system was developed by our group providing resolutions of 1.7 and 17 µm in axial and lateral direction, respectively. This axial resolution is about four times better than that provided by standard OCT systems. It allows to perform in vivo imaging with a resolution close to biopsy of tissue and to visualize structures of the anterior eye segment with a remarkable richness of detail. The prototype was applied for in vivo imaging of the cornea including the precorneal tear film. The goal of the planned pilot study is to apply this innovative imaging modality for visualization of the ultrastructure of the different parts of the anterior eye segment structures in diseased subjects, as well as in patients who underwent minimally invasive glaucoma surgery (MIGS). The obtained in vivo cross sectional images and three-dimensional data sets are hoped for contributing to the knowledge about the anatomy and physiology of the corresponding tissues. This could allow for a better interpretation of clinical features and findings obtained in slit lamp examination.

NCT ID: NCT03274895 Recruiting - Clinical trials for Acanthamoeba Keratitis

Polyhexamethylene Biguanide (PHMB) Ophthalmic Solution in Subjects Affected by Acanthamoeba Keratitis

Start date: August 13, 2017
Phase: Phase 3
Study type: Interventional

Phase 3 study to evaluate the efficacy, safety and tolerability of 0.08% PHMB ophthalmic solution in subjects affected by Acanthamoeba keratitis. A total of 130 subjects will be assigned to one of the following 2 treatment groups: Group 1: 0.08% PHMB + placebo Group 2: 0.02% PHMB + 0.1% propamidine combination therapy

NCT ID: NCT02763605 Recruiting - Clinical trials for Acanthamoeba Keratitis

Retrospective Study of Acanthamoebic Keratitis During the Past 10 Years

Start date: January 2014
Phase: N/A
Study type: Observational

Acanthamoebic keratitis is an important corneal disease which may cause severe complication. The difficulty in diagnosis, the difficulty in treatment, and the long treatment process are factors leading to the poor prognosis of these patients. In this retrospective study, the investigators try to analyze the tissue proven Acanthamoebic keratitis diagnosed in our hospital. The investigators will focus on the in vivo confocal microscopic results, the medical history and the medical/surgical treatment outcome. The investigators will collect the tissue proven cases according to the data provided by laboratory diagnosis department and pathological department. The in vivo confocal microscopic results will be collected and analyzed. The investigators will also look through the photography of the external eyes from data stored in PAC system. The medical history and treatment outcome will be studied from clinical chart review. From this study, the investigators aimed to find out a easy way of diagnosing Acanthamoebic keratitis from in vivo confocal microscopy, and find out a better way for treatment.

NCT ID: NCT02506257 Active, not recruiting - Clinical trials for Acanthamoeba Keratitis

Safety and Tolerability of Preservative-free Polyhexamethylene Biguanide (PHMB) Ophthalmic Solution in Healthy Subjects

Start date: November 2015
Phase: Phase 1
Study type: Interventional

Randomized, double-masked, placebo-controlled, multiple center, parallel-group Phase 1 study to evaluate the safety and tolerability of 3 doses of preservative-free PHMB ophthalmic solution compared to placebo in healthy subjects