Clinical trials: Keratoconus
Keratoconus
Comparison of Partial Removal and Total Removal of the Corneal Epithelium on Keratoconus
The purpose of this study is to determine which surgical method makes less corneal haze
- Trial name
- NCT01809977
- Testing
- collagen cross-linking procedure (total removal), collagen cross-linking procedure (partial removal)
- Where
- Iran
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Isfahan University of Medical Sciences
Keratoconus
Treatment of Keratoconus With Advanced Corneal Crosslinking
The purpose of this study was to determine whether mechanical compression of the cornea during corneal crosslinking for keratoconus using a sutured rigid contact lens can improve the optical outcomes of the treatment.
- Trial name
- NCT02425150
- Testing
- Corneal reshaping/crosslinking (CRXL), Corneal Crosslinking (CXL)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Umeå University
Keratoconus, Cornea Ectasia
Dietary Riboflavin (Vitamin B-2) and Cornea Cross-Linking
Corneal ectasia is characterized by irregularity and thinning of the cornea, causing the cornea to bulge forward and cause distorted vision and impaired visual acuity.
- Trial name
- NCT03095235
- Testing
- Dietary riboflavin
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Keratoconus, Ocular Surface Disease
Pilot Study to Investigate the Feasibility, Reliability and Efficacy of Utilizing OCT to Automate PROSE Fitting
EYEdeal Scanning Technology enables rapid measurement of corneal and scleral topography. By accurately measuring the ocular surface with this imaging technology, the current iterative fitting method required to fit PROSE…
- Conditions
- Keratoconus, Ocular Surface Disease, Pellucid Marginal Corneal Degeneration, Ectasia
- Trial name
- NCT04649177
- Testing
- Ocular surface optical coherence tomography
- Where
- United States
- Volunteers
- 11 people, healthy volunteers welcome
- Sponsor
- Boston Sight
Keratoconus
Validation of Innovative Scheimpflug Topography Derived RGP Contact Lens Designs In Optometry Network
The goal of this Prospective, single-site, cohort study is to validate rigid gas permeable corneal contact lens (RGP) designs for keratoconus derived from combining the data from corneal topography scans and contact lenses…
- Trial name
- VISION (NCT06312163)
- Testing
- The contact lens to be investigated in this study (Scheimpflug topography derived corneal RGP contact lens design). A CE (UKCA) marked class 2 medical devices.
- Where
- United Kingdom
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Moorfields Eye Hospital NHS Foundation Trust
Keratoconus
Topography Versus Non-Topography-Guided PRK With CXL in Keratoconus
To our knowledge, this study is one of the first to compare the visual results of non-topography-guided and topography-guided photorefractive keratectomy (PRK) applying sequential and simultaneous corneal cross-linking (CXL)…
- Trial name
- keratoconus (NCT03890718)
- Testing
- Photorefractive keratectomy in mile keratoconus
- Where
- Iran
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University
Keratoconus, Keratoconus, Unspecified, Bilateral
Evaluation of Tomographic and Genetic Aspects of Keratoconus Patients Compared to Sounds Corneas
Evaluation of tomographic (Pentacam) parameters and genetic parameters of Visual System Homeobox 1 (VSX1), Superoxide Dismutase (SOD1), Tissue Inhibitors of Metalloproteinases (TIMP3) genes of keratoconus patients diagnosed by…
- Trial name
- NCT03071302
- Testing
- EVALUATION OF VSX1, SOD1, and TIMP3 genes
- Where
- Brazil
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- Sao Jose do Rio Preto Medical School
Keratoconus, Keratoconus, Unstable
Epi-On Corneal Crosslinking for Keratoconus
Epithelium-On Corneal Crosslinking for Keratoconus.
- Trial name
- NCT03245853
- Testing
- Riboflavin 5'-Phosphate
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Comprehensive EyeCare of Central Ohio
Progressive Keratoconus, Corneal Ectasia
Corneal Crosslinking in Keratoconus and Corneal Ectasia
Prospective, randomized, single site to determine the safety and effectiveness of performing corneal collagen cross-linking (CXL) using riboflavin and UVA light in eyes progressive keratoconus or corneal ectasia.
- Trial name
- CXL (NCT00679666)
- Testing
- Riboflavin
- Where
- 2 sites in United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Ohio State University
Corneal Neovascularisation, Keratoconus
Investigation of Different Scanning Protocols for 3 Dimensional High-resolution Imaging of the Human Cornea With Optical Coherence Tomography (OCT) - A Pilot Study
The aim of the present study is to develop a protocol for optimal corneal 3-dimensional imaging based on measurements in healthy volunteers. For this purpose, a customized ultra-high resolution Spectral Domain OCT will be used.
- Trial name
- NCT01843101
- Testing
- Optical Coherence Tomography
- Where
- Austria
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Scansys, Pentacam, Keratoconus, Subclinical Keratoconus
Evolution of a Novel Optical Coherence Tomography Based Index in Diagnosing Keratoconus
Comparison of corneal topography based on oct OCT principle (CASIA2) with Pentacam and Scheimpflug-based biomechanical devices (Corvis ST) in screening and diagnosing keratoconus; and evaluation of the consistency with Pentacam…
- Trial name
- NCT06152484
- Testing
- Pentacam, Corvis ST and CASIA2
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Ocular Surface Disease, Keratoconus
Changes of Visual Function, Ocular Surface Structures and Physiology After Long-Termed Contact Lens Wear
Our study is aimed to observe the long termed effect of contact lens wear on ocular surface, especially focused on visual function and ocular inflammation mediators.
- Conditions
- Ocular Surface Disease, Keratoconus, Irregular Astigmatism
- Trial name
- NCT02894489
- Testing
- corneal lenses, large diameter lenses
- Where
- Taiwan
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Keratoconus in One or Two Eyes for Case, Good Visual Acuity for Control
Influence of Keratoconus on Stress at Work
Keratoconus is a progressive disorder in which central and paracentral corneal stromal thinning occurs. No studies evaluated the influence of keratoconus on stress at work, nor the influence of treatments of keratoconus on stress…
- Trial name
- KERATOSTRESS (NCT04789707)
- Testing
- auto-questionnaire
- Where
- France
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University Hospital, Clermont-Ferrand
Keratoconus, Ectasia
A Study to Test the Diagnostic Potential of Brillouin Microscopy for Corneal Ectasia
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…
- Conditions
- Keratoconus, Ectasia, Crosslinking, Fuchs' Endothelial Dystrophy
- Trial name
- NCT02118922
- Testing
- Brillouin imaging
- Where
- United States
- Volunteers
- 168 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Irregular; Contour of Cornea, Keratoconus
Scleral Versus Corneal RGP Contact Lenses in Irregular Cornea Disorders
The most common causes for irregular cornea (IC) in hospital contact lens practice are Keratoconus (KC) and related cornea thinning disorders.
- Conditions
- Irregular; Contour of Cornea, Keratoconus, Pellucid Marginal Corneal Degeneration, Injury of Cornea
- Trial name
- NCT02444923
- Testing
- Scleral rigid gas permeable contact lenses (SRGPcl) (Zenlens™), Corneal Rigid gas Permeable contact lenses (CRGPcl) (Rose K2)
- Where
- United Kingdom
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- London South Bank University
Keratoconus, Dry Eye
Safety and Efficacy of Intracanalicular Dexamethasone Compared to Loteprednol Etabonate in Patients With Keratoconus
Drug delivery platforms are an innovative exciting advancement in ophthalmology. They allow patients to eliminate topical medications which are generally associated with lack of compliance, difficulty of use and requiring help…
- Conditions
- Keratoconus, Dry Eye, Allergy
- Trial name
- NCT04418999
- Testing
- dexamethasone ophthalmic insert 0.4 mg, for intracanalicular use, Loteprednol Etabonate 0.38% Ophthalmic Gel/Jelly
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Illinois College of Optometry
Keratoconus, Intraocular Pressure
Measuring the Changes of the Intraocular Pressure After Corneal Cross Linking Using Corvis CT
To evaluate the changes that occur in the intraocular pressure before and after corneal cross linking using Corvis CT.
- Trial name
- NCT07599020
- Testing
- Corvis Machine
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Tanta University
Keratoconus
Evaluation of Safety and Efficacy of a Bioengineered Corneal Implant for Treatment of Keratoconus
This is a prospective, Phase I open-label safety study to evaluate the safety, feasibility and initial efficacy of a bioengineered corneal stromal substitute after implantation into the stroma of adults with advanced keratoconus.
- Trial name
- LinkCor (NCT04653922)
- Testing
- LinkCor Bioengineered Corneal Implant
- Where
- 2 sites in India, Iran
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- LinkoCare Life Sciences AB
Keratoconus
The Additional Role of Supplemental Oxygen Therapy in Accelerated Corneal Collagen Cross-linking in Progressive Keratoconus. A Randomized Clinical Trial
It is aimed to investigate the role of supplemental systemic oxygen therapy during accelerated corneal collagen crosslinking (CXL).
- Trial name
- NCT04343326
- Testing
- perform corneal collagen cross linking accelerated and delivery of systemic oxygen, perform corneal collagen cross linking accelerated and without additional oxygen therapy, perform Conventiona corneal collagen cross linking
- Where
- Iran
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University of Medical Sciences
Keratoconus
Management of Patients With Keratoconus With Intacs
Purpose To evaluate long-term follow up of Intacs microthin prescription inserts (Addition Technology Inc, Fremont, Calif) for the management of keratoconus. Design A long-term (five years) retrospective, follow-up study
- Trial name
- NCT00384501
- Testing
- Intacs
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University Hospital of Crete