Clinical trials: Cornea Disease
Healthy, Keratoconus
Comparison of WaveLight Analyzer and Alcon LadarWave
Comparison of repeated WaveLight Analyzer and Alcon LadarWave measurements in phakic and pseudophakic eyes.
- Trial name
- NCT00863876
- Where
- Germany
- Volunteers
- 144 people, healthy volunteers welcome
- Sponsor
- WaveLight AG
Diabetic Peripheral Neuropathy
Corneal Nerves Function and Structure
Peripheral neuropathy affects about 50% of the diabetic population and there is no treatment other than good blood glucose control, which is ineffective in subjects with type 2 diabetes.
- Trial name
- NCT04222660
- Testing
- Blackmores Omega Daily (4 1g capsules per day)
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Keratoconus
Treatment of Keratoconus Using Collagen Cross-Linking
The purpose of this study is to determine the effectiveness of collagen cross-linking in the cornea in halting the progression and possibly partially reversing the effects of keratoconus.
- Trial name
- NCT00841386
- Testing
- Riboflavin-5-phosphate
- Where
- 2 sites in United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- University at Buffalo
Trachoma
Enhancing the A in SAFE for Trachoma
This study will assess the cost and feasibility of two strategies of enhanced Mass Drug Administration (MDA) of Zithromax to treat trachoma in the Republic of South Sudan.
- Trial name
- NCT05634759
- Testing
- Azithromycin for Routine Community-wide MDA, Two Additional Rounds of Azithromycin for Children, Azithromycin for Second Community-wide MDA
- Where
- South Sudan
- Volunteers
- 34,630 people, healthy volunteers welcome
- Sponsor
- Emory University
Keratoconus
Assessment of Corneal Stiffness in Keratoconus After Crosslinking by Corvis ST and OCT.
Objectives: Measurement of corneal stiffness parameters { Deformation Amlitude (DAR1), Integrated radius, Stress parameter (SP A1), Stress strain index (SSI) and Corvis biomechanical index (CBI) } in keratoconic corneas before…
- Trial name
- NCT05161052
- Testing
- Corvis ST (dynamic Scheimpflug technology)
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Cairo University
Corneal Topography, Dry Eye Syndromes
Performance Evaluation of the OCUTOP Hand-held Corneal Topographer
The OCUTOP is a new hand-held camera that photographs the front of the eye to map the shape of the cornea and to assess the tear film.
- Conditions
- Corneal Topography, Dry Eye Syndromes, Keratoconus, Healthy Volunteers
- Trial name
- OCUTOP (NCT07895849)
- Testing
- OCUTOP hand-held corneal topographer with OCUGRAPH software, Reference instrument measurement (corneal topography and tear-film assessment)
- Where
- 2 sites in United Kingdom
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- University of Plymouth
Trachoma, Chlamydia Trachomatis
Impact of Two Alternative Dosing Strategies for Trachoma Control in Niger
Trachoma is a disease of poverty, which in the hyperendemic areas affects all individuals by the time they are two years old. Active disease is concentrated in children and occurs sporadically in adults.
- Trial name
- NCT00618449
- Testing
- Azithromcyin, Azithromycin
- Where
- 2 sites in United States, Niger
- Volunteers
- 1,139 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Corneal Perforation, Corneal Stromal Lenticule,Sandwich Technique
A Novel Sandwich Technique of Minimally Invasive Keratoplasty for Corneal Perforation
The goal of this type of study to describe a new sandwich technique of minimally invasive keratoplasty (STMIK) by using SMILE-extracted lenticules for treatment corneal perforation and effectiveness.
- Trial name
- STMIK (NCT06233409)
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Corneal Opacity
Comparison of Ultrasonic Pachymetry With Orbscan in Corneal Haze
This study is planned to compare the results of ultrasonic and Orbscan pachymetry in corneal haze not related to surgery. Corneal haze is graded with slit-lamp by a single examiner.
- Trial name
- NCT00439114
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Baskent University
Keratitis
Study of the Presence and Extent of Corneal Disturbance Associated With B+L Biotrue MPS Used With B+L PureVision Lenses
Corneal epithelial disruption, commonly termed "corneal staining" has been frequently associated with contact lens wear. Previous research has demonstrated higher levels of observed corneal staining when certain combinations of…
- Trial name
- NCT01268306
- Testing
- B+L Biotrue MPS and B+L PureVision
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Epstein, Arthur B., OD, FAAO
Corneal Ulcer
Studying the Relationship Between Contact Lens Packaging Solutions and Bacterial Binding to Surface Eye Cells
The goal of this study is to investigate the overall theory that the use of chemically preserved solutions associated with contact lenses promotes an increase in bacterial infection.
- Trial name
- NCT01104961
- Testing
- Contact lens packaging solution, Balanced salt solution (BSS)
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Retinal Detachment, Epiretinal Membrane
PIONEER: Intraoperative and Perioperative OCT Study
OCT provides high-resolution information regarding the anatomic structure of the tissues of the eye in a 2-dimensional and 3-dimensional view. Much of this information is not able to be recognized by a clinician.
- Conditions
- Retinal Detachment, Epiretinal Membrane, Macular Hole, Fuchs Endothelial Dystrophy
- Trial name
- PIONEER (NCT02423161)
- Where
- United States
- Volunteers
- 750 people, healthy volunteers welcome
- Sponsor
- The Cleveland Clinic
Keratoconus, Corneal Cross-Linking
Surface Ablation With Corneal Cross Linking in Mild Keratoconus
Interventional and comparative prospective study: Sixty-nine eyes (38 patients) suffering from keratoconus (stages 1-2 Amsler-Krumeich classification) will be divided into four groups.
- Trial name
- NCT05176171
- Testing
- Photorefractive Keratectomy with Corneal Cross-Linking
- Where
- Iran
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University
Keratoconus, Astigmatism
Corneal Epithelial and Stromal Thickness Distribution in Keratoconus
The purpose of the study was to identify corneal epithelial- and stromal-thickness distribution patterns in keratoconic eyes using spectral-domain-optical coherence tomography (SD-OCT).
- Trial name
- NCT02023619
- Where
- Norway
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- SynsLaser Kirurgi AS
Acanthamoeba Keratitis
Safety and Tolerability of Preservative-free Polyhexamethylene Biguanide (PHMB) Ophthalmic Solution in Healthy Subjects
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
- Trial name
- NCT02506257
- Testing
- 0.04% PHMB, 0.06% PHMB, 0.08% PHMB
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- SIFI SpA
Vision Disorders, Refractive Errors
Rapid Computerized Visual Acuity Test
A novel computerized visual acuity test was developed and tested on both healthy persons and patients with ocular conditions. Visual acuity outcomes of the computerized test will be compared to the Early Treatment Diabetic…
- Conditions
- Vision Disorders, Refractive Errors, Retinal Disease, Cataract
- Trial name
- NCT05447845
- Testing
- Computerized visual acuity assessment program
- Where
- Israel
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Rambam Health Care Campus
Corneal Diseases
Using in Vivo Confocal Microscope to Evaluate the Corneal Wound Healing After Various Ocular Surgeries
Although epi-keratome laser-assisted in situ keratomileusis (Epi-LASIK), penetrating keratoplasty and pars plana vitrectomy with corneal epithelial debridement for diabetic retinopathy are surgeries commonly performed, the…
- Trial name
- NCT00491439
- Where
- Taiwan
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Keratoconus
Comparative Analysis of the Visual Performance After TICL Implantation in Patients With Stable Keratoconus
To report on 4-year postoperative safety, efficacy, stability and predictability outcomes(to evaluate the visual, refractive, contrast sensitivity, defocus curve and aberrometric data preoperation, and compare with a similar…
- Trial name
- TICL (NCT02833649)
- Testing
- Toric Implantable collamer Lens
- Where
- Iran
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University
Keratoconus
Astigmatism in Keratoconus Patients
Keratoconus is a bilateral (but usually asymmetrical) non-inflammatory progressive thinning process of the cornea. It manifests as characteristic cone-like ectasia of the cornea associated with irregular stromal thinning…
- Trial name
- NCT03450213
- Testing
- Pentacam
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Assiut University
Normal Cornea, Corneal Abnormality
The Heidelberg Engineering ANTERION Corneal Epithelium Thickness Precision and Agreement Study
This is a prospective clinical study that will be conducted at one clinical site located in the United States to assess corneal epithelial thickness parameters with the ANTERION
- Trial name
- NCT05051813
- Testing
- ANTERION
- Where
- United States
- Volunteers
- 151 people, healthy volunteers welcome
- Sponsor
- Heidelberg Engineering GmbH