| Corneal Tissue Inlay for Keratoconus (NCT02649738) | Cornea and Laser Eye Institute | 2015-12-01 |
| Autologous Adipose-Derived Adult Stem Cell Transplantation for Corneal Diseases (NCT02932852) | Vissum, Instituto Oftalmológico de Alicante | 2015-11-01 |
| Scleral Versus Corneal RGP Contact Lenses in Irregular Cornea Disorders (NCT02444923) | London South Bank University | 2015-10-25 |
| Corneal De-epithelization Associated With a Therapeutic Photokeratectomy in Patients With Evolutive Keratoconus (NCT02857881) | Fondation Ophtalmologique Adolphe de Rothschild | 2015-10-13 |
| Correlation Between Eye Rubbing and Keratoconus Severity in a Treatment-naive Keratoconic Population (NCT02883881) | Centre Hospitalier Régional Metz-Thionville | 2015-10-01 |
| Cross-Linking ACcéléré Iontophorèse Confocal kératocONE (NCT03429569) | University Hospital, Clermont-Ferrand | 2015-08-12 |
| Evaluation of Tomographic and Genetic Aspects of Keratoconus Patients Compared to Sounds Corneas (NCT03071302) | Sao Jose do Rio Preto Medical School | 2015-08-01 |
| Biomechanical Properties of Keratoconic Eyes (NCT02476149) | University of Plymouth | 2015-06-01 |
| Astigmatic Vector Analysis of Posterior Cornea - a Comparison Among Healthy, Forme Fruste and Overt Keratoconus Corneas (NCT02698709) | University of Sao Paulo | 2015-05-01 |
| Comparison Between Standard Deep Anterior Lamellar Keratoplasty (S-DALK) and Intralase Enabled Deep Anterior Lamellar Keratoplaty (IE-DALK) (NCT03732599) | University of Toronto | 2015-04-08 |
| Corneal Changes After Crosslinking in Keratoconus Patients Compared to the Untreated Fellow Eye (NCT02428166) | Heidelberg University | 2015-02-01 |
| A Novel Method to Assess the Cornea Biomechanical Properties With Schiotz Tonometer (NCT02475343) | Zhiwei Li | 2015-02-01 |
| Long Term Cornea Graft Survival Study (NCT02849808) | Centre Hospitalier Universitaire de Besancon | 2015-01-15 |
| Intraestromal Corneal Ring in Mild Keratoconus (NCT03127163) | University of Sao Paulo | 2015-01-10 |
| Distinguishing Healthy and Keratoconic Eyes Using Ultrahigh-Resolution OCT (NCT03184610) | Medical University of Vienna | 2014-12-01 |
| Familial Analysis of Keratoconus Risk (NCT02812563) | University Hospital, Bordeaux | 2014-11-25 |
| Fourier Transform of Videokeratography Data: Clinical Usefulness in Moderate and Frome Fruste Keratoconus (NCT02617368) | Democritus University of Thrace | 2014-11-01 |
| Simultaneous TransPRK and Corneal Collagen Cross-Linking (NCT02208089) | Bruce Allan | 2014-08-01 |
| Impact of Cataract Surgery on Keratoplasty Graft Survival (NCT02875145) | Centre Hospitalier Universitaire de Besancon | 2014-08-01 |
| Adapted Fluence Settings for Corneal Collagen Cross-linking in Mild to Moderate Progressive Keratoconus (NCT02507362) | Tehran University of Medical Sciences | 2014-08-01 |
| Effect of CACICOL20 on Corneal Epithelial Healing After Cross-linking in Patients With Keratoconus (NCT02119039) | Medical University of Vienna | 2014-07-01 |
| Epi Off Versus Epi on Corneal Collagen Cross-linking in Keratoconus Patients (NCT03598634) | University of Molise | 2014-06-01 |
| Investigation of Different Scanning Protocols for 3 Dimensional High-resolution Imaging of the Human Cornea With Optical Coherence Tomography (OCT) - A Pilot Study (NCT01843101) | Medical University of Vienna | 2014-03-14 |
| Tobacco Smoking Among Crosslinked-keratoconus Patients (NCT03462355) | Centre Hospitalier Régional Metz-Thionville | 2014-03-01 |
| Prevalence of Keratoconus in Inflammatory Bowel Diseases (NCT02861339) | Central Hospital, Nancy, France | 2014-02-01 |
| Objective and Subjective Diagnostic Parameters in the Fellow Eye of Unilateral Keratoconus (NCT03288116) | Dar Al Shifa Hospital | 2014-01-02 |
| Central Versus Peripheral Air Injection for DALK (Deep Anterior Lamellar Keratoplasty) (NCT02485951) | Shahid Beheshti University of Medical Sciences | 2014-01-01 |
| Safety and Efficacy of Corneal Collagen Cross-Linking in Eyes With Keratoconus (NCT01972854) | Glaukos Corporation | 2013-11-01 |
| OCT-guided LALAK for KCN (NCT01901614) | Oregon Health and Science University | 2013-08-01 |
| Corneal Epithelial and Stromal Thickness Distribution in Keratoconus (NCT02023619) | SynsLaser Kirurgi AS | 2013-07-01 |
| A Study to Test the Diagnostic Potential of Brillouin Microscopy for Corneal Ectasia (NCT02118922) | Massachusetts General Hospital | 2013-06-01 |
| Treatment of Keratoconus With PALK Versus PK (NCT02625467) | Instituto de Oftalmología Fundación Conde de Valenciana | 2013-06-01 |
| Myoring Versus Keraring Implantation for Keratoconus (NCT01869517) | Shahid Beheshti University of Medical Sciences | 2013-05-01 |
| Iontophoretic Transepithelial Corneal Cross-linking in Pediatric Patients (NCT03661164) | Luca Buzzonetti | 2013-05-01 |
| Evaluating the Safety and Efficacy of the KXL System for Corneal Collagen Cross-Linking in Eyes Having Keratoconus (NCT02638376) | Singapore Eye Research Institute | 2013-03-01 |
| CXL-04 A Study of Collagen Crosslinking With Ultraviolet-A in Asymmetric Corneas (NCT01956474) | Cxlusa | 2013-01-01 |
| Iontophoretic Transepithelial Collagen Cross-linking Versus Epithelium-off Collagen Cross-linking in Pediatric Patients. Three Year Follow up. (NCT03753009) | Bambino Gesù Hospital and Research Institute | 2013-01-01 |
| Botulinum Toxin A for the Treatment of Keratoconus (NCT01691651) | Federal University of São Paulo | 2012-09-01 |
| Clinical and Structural Outcome of Conventional Versus Accelerated Corneal Collagen Cross-linking (CXL). (NCT02883478) | Oslo University Hospital | 2012-08-01 |
| Microwave Treatment and Corneal Collagen Crosslinking for Keratoconus (NCT01672814) | Cornea and Laser Eye Institute | 2012-08-01 |
| Safety and Efficacy Study of Corneal Collagen Cross-Linking in Eyes With Keratoconus (NCT01344187) | Glaukos Corporation | 2012-07-01 |
| Safety & Efficacy of Corneal Collagen Cross-Linking in Eyes With Keratoconus or Corneal Ectasia After Refractive Surgery (NCT01459679) | American-European Congress of Ophthalmic Surgery | 2012-07-01 |
| Comparison of Partial Removal and Total Removal of the Corneal Epithelium on Keratoconus (NCT01809977) | Isfahan University of Medical Sciences | 2012-07-01 |
| Safety and Efficacy Study of Corneal Collagen Cross-Linking in Eyes With Keratoconus (NCT01643226) | Glaukos Corporation | 2012-07-01 |
| Collagen Crosslinking for Keratoconus - a Randomized Controlled Clinical Trial (NCT01604135) | Sahlgrenska University Hospital | 2012-05-01 |
| CEI Van Outreach Screening Study (NCT01510392) | Oregon Health and Science University | 2012-01-01 |
| Conventional Collagen Crosslinking in Young Keratoconus (NCT02008175) | Vasan Eye Care Hospital | 2012-01-01 |
| Comparative Analysis of the Visual Performance After TICL Implantation in Patients With Stable Keratoconus (NCT02833649) | Shahid Beheshti University | 2011-12-01 |
| Transepithelial Corneal Collagen Crosslinking for Keratoconus and Corneal Ectasia (NCT01464268) | Cornea and Laser Eye Institute | 2011-11-01 |
| Measurement of High Order Aberrations in Late Stages Keratoconus (NCT01295164) | University Hospital, Toulouse | 2011-10-01 |
| Accuracy of Curvature and Wavefront Aberrations of Posterior Corneal Surface, in Keratoconic and Post-CXL Corneas (NCT01527708) | Democritus University of Thrace | 2011-09-01 |
| Standard Versus Transepithelial Corneal Crosslinking (NCT02349165) | Nienke Soeters | 2011-05-01 |
| Twelve Month Clinical Evaluation of KeraSoft IC Soft Contact Lenses (NCT01416272) | Bausch & Lomb Incorporated | 2011-04-01 |
| UVA-Riboflavin Crosslinking Treatment of Corneal Ectasia (NCT01325298) | Mercy Center for Corrective Eye Surgery | 2011-03-01 |
| Variability of Pentacam-derived Back Elevation Measurements in Keratoconus and Cross-linked Corneas (NCT01471873) | Democritus University of Thrace | 2011-03-01 |
| Intacs Prescription Inserts for Keratoconus Patients (NCT02138669) | University of Texas Southwestern Medical Center | 2011-01-01 |
| The Homburg Keratoconus Center (HKC) (NCT03923101) | Universität des Saarlandes | 2011-01-01 |
| Laser Assisted Procedures in Penetrating Keratoplasty (NCT02173847) | Ospedale Santo Stefano | 2011-01-01 |
| MyoRing Implantation With Corneal Collagen Crosslinking for Keratoconus (NCT02590549) | Ufa Eye Research Institute | 2011-01-01 |
| Photorefractive Keratectomy and Corneal Cross-linking in Keratoconus (NCT02189447) | The Eye Center and The Eye Foundation for Research in Ophthalmology | 2011-01-01 |
| Keratoconus Detection by Ultrasound (NCT01403129) | Columbia University | 2010-12-01 |
| Higher Irradiance in Keratoconus Ectasia (NCT01789333) | Stephen Trokel | 2010-09-01 |
| Blurring Strength & Aberrometric Changes Following Corneal Cross-linking (CxL) and CxL Combined With Photorefractive Keratectomy (PRK) in Keratoconus (NCT01527721) | Democritus University of Thrace | 2010-09-01 |
| Safety Study of the VEGA UV-A System to Treat Keratoconus (NCT01190306) | Topcon Medical Systems, Inc. | 2010-08-01 |
| Transepithelial Corneal Collagen Cross-linking (CXL) in Treatment of Keratoconus (NCT01181219) | University Hospital of North Norway | 2010-07-01 |
| Corneal Collagen Crosslinking for Progressive Keratoconus and Ectasia Using Riboflavin/Dextran and Hypotonic Riboflavin (NCT01152541) | Cornea and Laser Eye Institute | 2010-06-01 |
| Corneal Crosslinking in Patients With Keratoconus and Post-Refractive Ectasia (NCT01143389) | Price Vision Group | 2010-05-01 |
| Corneal Collagen Crosslinking and Intacs for Keratoconus and Ectasia (NCT01112072) | Cornea and Laser Eye Institute | 2010-04-01 |
| Corneal Cross Linking and Topography Guided Excimer Laser Treatment (NCT01682993) | Medical University of Vienna | 2010-01-01 |
| Feasibility Study of the Vedera KXS for Treatment of Keratoconus (NCT01069848) | Glaukos Corporation | 2010-01-01 |
| Standard Corneal Collagen Crosslinking Versus Transepithelial Corneal Crosslinking by Iontophoresis of Riboflavin (NCT02456961) | Ufa Eye Research Institute | 2010-01-01 |
| Collagen Crosslinking With Ultraviolet-A in Asymmetric Corneas (2) (NCT01097447) | Cxlusa | 2009-12-01 |
| Collagen Crosslinking With Ultraviolet-A in Asymmetric Corneas (NCT01024322) | Cxlusa | 2009-10-01 |
| Treatment of Keratoconus With Advanced Corneal Crosslinking (NCT02425150) | Umeå University | 2009-10-01 |
| Corneal Collagen Cross-linking With Hypotonic Riboflavin in Corneas Thinner Than 400 Microns (NCT00890266) | Moorfields Eye Hospital NHS Foundation Trust | 2009-04-22 |
| Impact of Keratoconus, Cross-linking and Cross-linking Combined With Topo-guided Photorefractive Keratectomy on Self-reported Quality of Life. A Three-year Update. (NCT01845714) | Democritus University of Thrace | 2009-04-01 |
| Comparison of WaveLight Analyzer and Alcon LadarWave (NCT00863876) | WaveLight AG | 2009-03-01 |
| Corneal Sensitivity Cross-linking Keratoconus (NCT01743443) | Instituto de Olhos de Goiania | 2009-03-01 |
| Orthokeratology for Keratoconus (NCT00816569) | Hadassah Medical Organization | 2009-02-01 |
| Collagen Cross-Linking for Keratoconus/Ectasia With and Without Intacs (NCT01081561) | Yaron S. Rabinowitz M.D. | 2009-01-21 |
| T-Cat Laser & Cross-linking for Keratoconus (NCT00777322) | Moorfields Eye Hospital NHS Foundation Trust | 2008-10-01 |
| Treatment of Keratoconus Using Collagen Cross-Linking (NCT00841386) | University at Buffalo | 2008-09-01 |
| Comparison of Anwar and Melles Techniques in Deep Anterior Lamellar Keratoplasty (DALK) for Keratoconus Patients (NCT00850148) | Shahid Beheshti University of Medical Sciences | 2008-05-01 |
| Evaluation of Topical Riboflavin Exposed to UVA Radiation and Implantation of Corneal Ring (NCT00832897) | Federal University of São Paulo | 2008-03-01 |
| Intrastromal Corneal Ring Segment Implantation in 219 Keratoconic Eyes at Different Stages (NCT01261013) | Fernandez-Vega Ophthalmological Institute | 2008-01-01 |
| German Corneal Cross Linking Register (NCT00560651) | Suphi Taneri | 2007-11-01 |
| Femtosecond Laser-Assisted Keratoplasty (NCT01695811) | University of Michigan | 2007-11-01 |
| Femtosecond Laser Assisted Keratoplasty (NCT00802776) | University of Michigan | 2007-10-01 |
| Corneal Topographer Fluorescein Patterns (NCT00584285) | Christine Sindt | 2007-09-15 |
| Riboflavin Mediated Corneal Crosslinking for Stabilizing Progression of Keratoconus (NCT00626717) | University Hospital Freiburg | 2007-08-01 |
| Outcomes in a Comparison of Manual Penetrating Keratoplasty and the IntraLase® Enabled Keratoplasty (NCT00566605) | Hospital Oftalmologico de Sorocaba | 2007-08-01 |
| Corneal Biomechanical Properties and Anterior Segment Parameters, in Forme Fruste Keratoconus (NCT01448408) | Democritus University of Thrace | 2007-05-01 |
| Evaluating Collagen Cross-Linking (CCL) Treatment in Norway (NCT00435799) | Ullevaal University Hospital | 2007-02-01 |
| Corneal Collagen Crosslinking With Riboflavin for Keratoconus Treatment: A Brazilian Study (NCT00642044) | Universidade Federal do Rio de Janeiro | 2007-02-01 |
| Comparison of Penetrating Keratoplasty and Deep Lamellar Keratoplasty With the Big Bubble Technique for Keratoconus (NCT00371202) | Shahid Beheshti University of Medical Sciences | 2006-07-01 |
| Deep Anterior Lamellar Keratoplasty (DALK) (NCT00887900) | Hospital Oftalmologico de Brasilia | 2006-01-01 |
| Relationship Between Central Corneal Thickness and Intraocular Pressure Measures Instruments. (NCT00347191) | Aston University | 2006-01-01 |
| Lamellar Transplant With Lyophilized Corneas (NCT00409955) | Federal University of São Paulo | 2005-12-01 |
| Intacs for Keratoconus (NCT00347230) | Singapore National Eye Centre | 2005-10-01 |
| A Clinical Study of Keratoconus in Asian Patients and Assessment of Different Topographic Patterns of Keratoconus in Asian Patients (NCT00347074) | Singapore National Eye Centre | 2003-09-01 |