Clinical Trials on Irregular Astigmatism

Total 389 results

Eye Hospital Pristina Kosovo

Active, not recruiting

Intrastromal Fresh Human Corneal Lenticule Implantation Using Smile Surgery for Treatment of Irregular Corneal Astigmatism After Penetrating Keratoplasty (New Approach)

Irregular Astigmatism

Kosovo
Assiut University

Completed

Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular Cornea

Irregular Astigmatism

Egypt
AcuFocus, Inc.

Recruiting

Clinical Investigation of a Small Aperture Extended Depth of Focus Intraocular Lens in Patients With Complex Corneas

Cataract | Presbyopia | Irregular Astigmatism

Philippines, Singapore
Taipei Medical University WanFang Hospital

Completed

The Clinical and Biochemical Characteristics in Women With Different Menstrual Pattern

Irregular Menstrual Cycle | Regular Menstrual Cycle

Taiwan
National Taiwan University Hospital

Unknown

Changes of Visual Function, Ocular Surface Structures and Physiology After Long-Termed Contact Lens Wear

Keratoconus | Ocular Surface Disease | Irregular Astigmatism

Taiwan
Tianjin Eye Hospital

Recruiting

Evaluation of the Safety and Efficacy of Rigid Breathable Scleral Contact Lenses for the Correction of Ametropia

Corneal Astigmatism | Ocular Surface Disease | Contact Lens Complication | Irregular Astigmatism

China
London South Bank University

Completed

Scleral Versus Corneal RGP Contact Lenses in Irregular Cornea Disorders

Keratoconus | Irregular Astigmatism | Irregular; Contour of Cornea | Pellucid Marginal Corneal Degeneration | Injury of Cornea

United Kingdom
Cornea and Laser Eye Institute

Recruiting

Wavefront Guided Scleral Lenses for Keratoconus and Irregular Astigmatism (WFG Sclerals)

Keratoconus | Corneal Ectasia | Irregular Astigmatism | Aberration, Corneal Wavefront | Wavefront Aberration, Corneal | Pellucid Marginal Corneal Degeneration | Keratoglobus

United States
Abbott

Completed

Treatment Regimen in Menstrual Cycle Regularization and Persistence in Routine Clinical Practice in Russia, Ukraine, Kazakhstan and Uzbekistan

Irregular Menstrual Cycle

Kazakhstan, Russian Federation, Ukraine, Uzbekistan
Abbott

Completed

Duphaston in Cycle Regularization: A Post-marketing, Prospective, Multicenter, Observational Study

Irregular Menstrual Cycle

India
Azidus Brasil
União Química Farmacêutica Nacional S/A

Completed

Evaluation of Ciclo 21® Effect (Levonorgestrel + Ethinyl Estradiol) Compared to Nordette®.

Irregular Periods

Brazil
Johnson & Johnson Medical, China

Completed

Surgiscreen Registration

Irregular Antibody Screening

China
Jennifer Fogt
Contamac Ltd

Completed

Scleral Contact Lens Insertion Solution Study

Irregular; Contour of Cornea

United States
Penn State University
Dairy Management Inc.

Completed

Influence of a Delivery System on the Efficacy of a Probiotic Intervention

Delayed Transit Time | Irregular Bowel Function

United States
Emory University
Children's Healthcare of Atlanta

Completed

Ventricular Synchrony in Pediatric Patients

Irregular Heart Rate

United States
Ziemer Ophthalmic Systems AG
Tigermed Consulting Co., Ltd

Recruiting

Efficacy and Safety of CLEAR in Myopia and Astigmatism in Chinese Population

Myopic Astigmatism

China
Bausch & Lomb Incorporated

Completed

Retrospective Chart Review of enVista Toric 0.9D Intraocular Lenses

Corneal Astigmatism

Canada
Staar Surgical Company

Active, not recruiting

STAAR Visian Toric ICL Post-Approval Study (TICL-PAS)

Myopic Astigmatism

United States
Coopervision, Inc.

Completed

A Bilateral Dispensing Comparison of Comfilcon A Over Senofilcon C Contact Lenses

Astigmatism Bilateral

Canada
University Clinic Frankfurt

Completed

Tomographic Analysis of Anterior, Posterior, Total Corneal Refractive Power Changes After Laser-assisted Keratotomy

Corneal Astigmatism
Ohio State University

Active, not recruiting

Evaluation of Wear Experience With Daily Disposable and Monthly Replacement Toric Contact Lenses

Astigmatism Bilateral

United States
Coopervision, Inc.

Completed

Comparison of Two Daily Disposable Soft Contact Lenses

Astigmatism Bilateral

United States
Cairo University

Unknown

Contribution of Posterior Corneal Astigmatism to Total Corneal Astigmatism in a Sample of Egyptian Population

Corneal Astigmatism

Egypt
Ashford and St. Peter's Hospitals NHS Trust
Bausch & Lomb Incorporated

Unknown

Toric IOL vs Non-toric IOL With LRI for Corneal Astigmatism

Corneal Astigmatism

United Kingdom
Carl Zeiss Meditec, Inc.

Completed

Study of the MEL 80 Excimer Laser Using LASIK in the Treatment of Mixed Astigmatism

Mixed Astigmatism

United States
Johnson & Johnson Vision Care, Inc.

Completed

Dispensing Evaluation of Investigational Contact Lenses

Myopia; Astigmatism

United States
London Vision Clinic
Optana GmbH

Recruiting

Treatment of Vision Disturbances Due to Corneal Irregularities by Trans-epithelial Optical Phototherapeutic Keratectomy (TE-oPTK)

Corneal Astigmatism

United Kingdom
Yonsei University

Unknown

Rotational Stability of V4C Toric Implantable Contact Lenses After On Axis Implantation Measured With OPD Scan 3

Myopic Astigmatism

Korea, Republic of
Abbott Medical Optics

Completed

Feasibility of iFS™ for Intrastromal Arcuate Keratotomy (ISAK) Procedures

Refractive Astigmatism

Austria
Medicontur Medical Engineering Ltd
Medevise Consulting

Recruiting

Prospective Multicenter Clinical Study on the Visual and Refractive Outcomes and Safety Outcomes Following Implantation of an AddOn Intraocular Lens in Previously Pseudophakic Eyes

Refractive Errors | Presbyopia | Residual Astigmatism

Belgium, France, Spain, United Kingdom
Staar Surgical Company

Completed

Multicenter Clinical Trial of a Phakic Implantable Collamer® Lens (ICL)

Myopia | Myopic Astigmatism

United States
Staar Surgical Company

Completed

Post-Market Evaluation of the EVO ICL

Myopia | Myopic Astigmatism

United States
Alcon Research

Completed

Clinical Investigation of the WaveLight® EX500 Excimer Laser

Hyperopia | Hyperopic Astigmatism

United States
Bausch & Lomb Incorporated

Completed

A Study With Technolas® TENEO 317 Model 2 Excimer Laser to Treat Participants With Myopia or Myopic Astigmatism

Myopia | Myopic Astigmatism

United States
Eye Hospital Pristina Kosovo

Active, not recruiting

Fresh Corneal Lenticule Implantation in Hyperopic Patients With High Astigmatism

Hyperopia | High Astigmatism

Kosovo
Shahid Beheshti University of Medical Sciences

Completed

Surgically Induced Astigmatism of Temporal Versus Nasal Clear Corneal Phacoemulsification

Surrgical Induced Astigmatism

Iran, Islamic Republic of
University of Arizona
National Eye Institute (NEI)

Recruiting

Spectacle Prescribing in Early Childhood (SPEC)

Eyeglasses | Astigmatism Bilateral

United States
Fort Belvoir Community Hospital
Walter Reed National Military Medical Center; US Army Night Vision and Electronic...

Completed

Optical Quality, Threshold Target Identification, and Military Target Task Performance After Advanced Keratorefractive Surgery

Myopia | Myopic Astigmatism

United States
Wenzhou Medical University

Completed

Construction of Computerized Intraoperative Keratometer and Experimental Study

Corneal Astigmatism | Orientation

China
Medical University of South Carolina

Completed

Comparison of a Laser Keratome to a Mechanical Microkeratome

Astigmatism | Myopia | Myopic Astigmatism
Technolas Perfect Vision GmbH

Unknown

SUPRACOR for Myopia and Myopic Astigmatism (SUPRACOR)

Presbyopia | Myopia | Myopic Astigmatism

Spain
London Vision Clinic

Enrolling by invitation

Using the VisuMax Femtosecond Laser System to Perform SMILE Optimized for Presbyopia by Modulation of Postoperative Spherical Aberration

Presbyopia | Myopia | Myopic Astigmatism

United Kingdom
Guang'anmen Hospital of China Academy of Chinese...

Completed

Electroacupuncture for Diminished Ovarian Reserve

Irregular Menses
InQpharm Group

Completed

IQP-PO-101 for the Regulation of Bowel Movement Frequency

Constipation | Irregular Bowel Movement Frequency

Germany
Loay Abdulmutalib Almusawi

Recruiting

Safety and Suitability of ICL for Correction of Refractive Errors Without the Use of Dispersive OVDs

Refractive Errors | Myopia | Hypermetropia | Myopic Astigmatism

Iraq
Johnson & Johnson Surgical Vision, Inc.

Completed

Clinical Investigation of Two Tecnis Investigational Lenses

Cataract | Corneal Astigmatism

Australia, New Zealand
Alcon Research

Completed

Clinical Investigation of an AcrySof IQ PanOptix Toric Intraocular Lens

Corneal Astigmatism | Aphakia

Japan
Alcon Research

Recruiting

Clareon Toric Study (T2-T9)

Corneal Astigmatism | Aphakia

Canada
Kasr El Aini Hospital

Recruiting

Correlation Between Preoperative Refraction and Anterior Segment Parameters With ICL Vault

Refractive Errors | Myopia | Myopic Astigmatism

Egypt
Sohag University

Not yet recruiting

Limbal Relaxing Incisions Versus Paired 4 mm Clear Corneal Incisions on Steep Meridian During Phacoemulsification (LRI-CCI)

Corneal Astigmatism

Clinical Trials on Irregular Astigmatism

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CROs in Colombia

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