Clinical trials: Corneal Ectasia
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, Irregular Astigmatism
Wavefront Guided Scleral Lenses for Keratoconus and Irregular Astigmatism
Aberrations are the spreading of light from a point focus. Aberrations of the eyes can be objectively evaluated with a wavefront aberrometer.
- Conditions
- Keratoconus, Irregular Astigmatism, Corneal Ectasia, Aberration, Corneal Wavefront
- Trial name
- WFG Sclerals (NCT04698590)
- Testing
- Wavefront Guided Scleral Lenses, Traditional Scleral Lenses
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Cornea and Laser Eye Institute
Keratoconus
CXL-04 A Study of Collagen Crosslinking With Ultraviolet-A in Asymmetric Corneas
The purpose of this study is to evaluate the efficacy of ultraviolet-A (UVA)-induced cross-linking of corneal collagen (CXL) as a method to increase the biomechanical and biochemical stability of the cornea by inducing additional…
- Trial name
- NCT01956474
- Testing
- Theralight crosslinking and Riboflavin
- Where
- 6 sites in United States
- Volunteers
- 1,324 people
- Sponsor
- Cxlusa
Corneal Ectasia
Observational Registry to Assess the Durability of Effect of CXL in Patients With Corneal Ectasia After Refractive Surgery
The objectives of this post market registry are to evaluate the safety and durability of treatment effect up to 3 years following cross-linking performed with Photrexa Viscous (riboflavin 5'- phosphate in 20% dextran ophthalmic…
- Trial name
- CXL (NCT03319082)
- Testing
- Corneal Collagen Cross-linking
- Where
- 11 sites in United States
- Volunteers
- 200 people
- Sponsor
- Glaukos Corporation
Corneal Ectasia Disorders Including Keratoconus
The Effects of Corneal Collagen Cross-linking
The corneal collagen cross-linking treatment has been used with increasing success to treat corneal dystrophies such as "keratoconus." Recent advances have allowed different techniques for performing this cross-linking treatment.
- Trial name
- NCT01708538
- Testing
- CXL
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Rush Eye Associates
Keratoconus, Corneal Ectasia
Corneal Collagen Crosslinking and Intacs for Keratoconus and Ectasia
This study will determine the efficacy of corneal collagen crosslinking (CXL) combined with Intacs for the treatment of keratoconus and corneal ectasia.
- Trial name
- CXL (NCT01112072)
- Testing
- Riboflavin
- Where
- United States
- Volunteers
- 160 people
- Sponsor
- Cornea and Laser Eye Institute
Keratoconus, Pellucid Marginal Corneal Degeneration
Safety & Effectiveness of the PXL-Platinum 330 System for CXL Using Riboflavin Solution
Safety and Effectiveness of the PXL-Platinum 330 System for Corneal Collagen Cross-linking in Eyes With Corneal Thinning Conditions
- Conditions
- Keratoconus, Pellucid Marginal Corneal Degeneration, Corneal Degeneration, Corneal Ectasia
- Trial name
- NCT04667572
- Testing
- PXL-330 Platinum device for crosslinking with Peschke riboflavin solution
- Where
- United States
- Volunteers
- 249 people, healthy volunteers welcome
- Sponsor
- Cornea Associates of Texas
Corneal Ectasia, Corneal Disease
Computer-aided Diagnosis of Ocular Diseases Based on Corneal Biomechanics
The purpose of this study is the investigation of biomechanical properties of the cornea using computer-aided data analysis. Currently, it is known that keratoconus and glaucoma are ocular disease that are associated with…
- Conditions
- Corneal Ectasia, Corneal Disease, Corneal Astigmatism, Keratoconus
- Trial name
- EyeTwin (NCT04475900)
- Testing
- Corneal biomechanics (Corvis ST, Oculus, Wetzlar, Germany), Corneal topography and tomography (Pentacam, Oculus, Wetzlar, Germany), Optic nerve head measurement
- Where
- Germany
- Volunteers
- 372 people, healthy volunteers welcome
- Sponsor
- Technische Universität Dresden
Keratoconus, Ectasia
Corneal Collagen Cross-Linking (CXL) Performed With "Epi-ON" Versus "Epi-OFF" in Eyes With Keratoconus and Other Corneal Ectatic Disorders
This is a prospective, randomized, single investigative site study to compare the safety and effectiveness of Epi-OFF CXL treatment (performed using Ricrolin+ and VEGA UV-A system) compared to Epi-ON CXL (performed using…
- Trial name
- NCT03858036
- Testing
- Ricrolin+, VEGA UV-A system
- Where
- United States
- Volunteers
- 550 people
- Sponsor
- Center for Sight, Sacramento, CA
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, Pellucid Marginal Degeneration
Corneal Cross Linking and Topography Guided Excimer Laser Treatment
Topography guided laser treatment enables the surgeon to correct higher order aberrations in corneas with irregular astigmatism.
- Trial name
- NCT01682993
- Testing
- Topography guided Excimer Laser treatment and Corneal Cross Linking, Corneal Cross Linking
- Where
- Austria
- Volunteers
- 30 people
- Sponsor
- Medical University of Vienna
Corneal Ectasia
Refractive and Corneal Topographic Characteristics in Upper Egypt Children With High Cylinder
Refractive and Corneal Topographic Characteristics in upper Egypt children with high cylinder: A cross sectional study
- Trial name
- NCT06348368
- Testing
- Pentacam and autorefractometry
- Where
- Egypt
- Volunteers
- 4,000 people
- Sponsor
- Sohag University
Keratoconus; Post-Refractive Ectasia
Retrospective Study of Corneal Tissue Addition Keratoplasty for Keratoconus and Post-Refractive Ectasia
This retrospective, multi-center observational study evaluates clinical outcomes in patients with keratoconus or post-refractive ectasia who previously underwent Corneal Tissue Addition Keratoplasty (CTAK) as part of routine…
- Trial name
- NCT07905079
- Testing
- Corneal Tissue Addition Keratoplasty (CTAK)
- Where
- 5 sites in United States
- Volunteers
- 61 people
- Sponsor
- Corneagen LLC
Keratoconus, Ectasia
Progressive Keratoconus or Ectasia Treatment Plan
Keratoconus and pellucid marginal degenerations are genetically based ocular conditions and post surgical ectasia is an iatrogenic condition.
- Trial name
- NCT01384773
- Testing
- Riboflavin Solution, UV-X Illumination System
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Stephen Trokel
Keratoconus, Ectasia
UVA-Riboflavin Crosslinking Treatment of Corneal Ectasia
The primary objective of this study is to evaluate two different ultraviolet (UV) dosing regimens for corneal collagen cross linking to slow the progressive changes in corneal curvature in eyes with progressive keratoconus or…
- Conditions
- Keratoconus, Ectasia, Corneal Ectasia
- Trial name
- NCT01325298
- Testing
- UV-X Light, Riboflavin
- Where
- United States
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Mercy Center for Corrective Eye Surgery
Cornea; Ectasia, Refractive Errors
Corneal Elastography and Patient Specific Modeling
The goal of this research is to develop measurement tools and simulation technology for characterizing and predicting individual responses to corneal treatments and for advancing understanding of corneal ectasia risk factors.
- Conditions
- Cornea; Ectasia, Refractive Errors, Keratoconus
- Trial name
- NCT03030755
- Testing
- Optical coherence tomography
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- The Cleveland Clinic
Keratoconus, Ectasia
Higher Irradiance in Keratoconus Ectasia
The purpose of the study is to see if brighter lights will allow for shortening of the treatment time required to stabilize the eyes of patients with keratoconus or a bulging cornea.
- Trial name
- NCT01789333
- Testing
- UVA Light with irradiance exposure of 9 mW/cm2, Riboflavin 0.1% ophthalmic solution
- Where
- United States
- Sponsor
- Stephen Trokel
Keratoconus, Ectasia Corneal
Comparison of Standard vs. Accelerated Corneal Crosslinking
The study objective is to compare accelerated and standard corneal crosslinking for treatment of progressive keratoconus or corneal ectasia.
- Trial name
- NCT03922542
- Testing
- riboflavin 0.1%
- Where
- United States
- Volunteers
- 508 people
- Sponsor
- Price Vision Group
Keratoconus and Ectasia
Safety and Effectiveness Study of the VEGA UV-A System for Cross-linking in Eyes With Keratoconus and Ectasia
The purpose of this research study is to evaluate the long tern safety and effectiveness of cross-linking in eyes with keratoconus and ectasia.
- Trial name
- NCT01398852
- Testing
- Riboflavin, VEGA UV-A Illumination System
- Where
- 13 sites in United States
- Volunteers
- 500 people
- Sponsor
- Topcon Medical Systems, Inc.
Keratoconus, Artificial Intelligence, Support Vector Machine
Efficiency of an Algorithm Derived From Corneal Tomography Parameters to Distinguish Highly Susceptible Corneas to Ectasia From Healthy
The objective of this study was to identify and build an algorithm through an imaging process using a support vector machine (SVM) with the tomography variables of cases with, KC, highly susceptible corneas to ectasia (HSCE), and…
- Trial name
- NCT04313387
- Testing
- Corneal tomography multivariate index derived from a support vector machine (CTMVI).
- Volunteers
- 588 people
- Sponsor
- Gildasio Castello de Almeida Junior