Search clinical trials for: irregular astigmatism

Total 533 results

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
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
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
Cornea and Laser Eye Institute

Active, not 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
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
Stephen Trokel

No longer available

Progressive Keratoconus or Ectasia Treatment Plan

Keratoconus | Ectasia

United States
Stephen Trokel

Withdrawn

Higher Irradiance in Keratoconus Ectasia

Keratoconus | Ectasia

United States
Assiut University

Completed

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

Irregular Astigmatism

Egypt
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
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
University of Nevada, Las Vegas

Not yet recruiting

Prosthetic Performance Enhancement Trial (PROSPER)

Lower Limb Amputation Below Knee (Injury) | Lower Limb Amputation Above Knee (Injury) | Amputation | Lower Limb Amputation Knee | Lower Limb Amputation at Ankle (Injury) | Lower Limb Amputation at Hip (Injury)

United States
Alcon Research

Not yet recruiting

Post-market Clinical Follow-up Study of Alcon TOTAL30® Contact Lenses (Lehfilcon A)

Astigmatism | Myopia | Hyperopia | Ametropia

United States
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
Mỹ Đức Hospital

Recruiting

Letrozole-stimulated Cycle Strategy Versus Artificial Cycle Strategy (LETSACT)

Hormone Replacement Therapy | Embryo Transfer | Letrozole | Irregular Menstruation

Vietnam
Kazakh Eye Research Institute

Recruiting

Toric Intraocular Lens Implantation in Pediatric Cataract (TILIPC)

Astigmatism | IOL | Cataract Congenital

Kazakhstan
Alcon Research

Recruiting

Clareon Toric Study (T2-T9)

Corneal Astigmatism | Aphakia

Canada
Instituto Mexicano del Seguro Social

Not yet recruiting

Chronic Sleep Deprivation and Changes in Cortical and Hippocampal Volume

Sleep Deprivation | Hippocampal Atrophy | Cortical Irregularity

Mexico
SIFI SpA

Recruiting

Observational Prospective Clinical Investigation on Monofocal Toric Intraocular Lens

Cataract | Astigmatism

Romania
Mopsy Research

Recruiting

Comparative Functional Vision Outcomes: DAILIES TOTAL1 Toric vs. Spherical Lenses in Asian Astigmatic Patients

Comparative Effectiveness Research

Hong Kong
Tianjin Eye Hospital
Beihang University

Recruiting

A Study of Artificial Intelligence Assisted Small Incision Lenticule Extraction (SMILE) for Surgical Design and Influencing Factors

Myopia | Myopic Astigmatism

China
Port Said University

Not yet recruiting

Promoting Whistleblowing Among Nurses: A Randomized Controlled Trail

Nurse's Role
Second Affiliated Hospital, School of Medicine,...

Recruiting

Femtosecond Laser Arcuate Keratotomy Versus Toric Intraocular Lens Implantation in Cataract Surgery

Cataract | Astigmatism

China
Jagiellonian University

Recruiting

Uterine and Endometrial Volume in PCOS and HPOD

Anovulation | Irregular Menses

Poland
Jagiellonian University

Recruiting

Quality of Life in Normogonadotropic Anovulation

Anovulation | Irregular Menses

Poland
Ain Shams University

Not yet recruiting

Changes in Angle Kappa and Corneal Back Elevations After Laser in Situ Keratomileusis in Myopic Astigmatism

Refractive Errors
Alcon Research

Recruiting

Evaluation of Long-term Safety and Performance of PanOptix Intraocular Lens (IOLs)

Presbyopia | Astigmatism | Aphakia

Spain
Peking University Third Hospital

Not yet recruiting

Total Corneal Astigmatism Prevalence in Cataract Patients

Cataract

China
Al Watany Eye Hospital

Recruiting

Evaluation of Different Lenticule Diameters in Myopic Astigmatism Correction With SMILE Procedures

Refractive Errors | Myopic Astigmatism

Egypt
Beijing Airdoc Technology Co., Ltd.
University of Notre Dame Australia

Recruiting

Software Refraction With Mobilerone Versus Retinoscopy (SRMR)

Astigmatism | Myopia | Myopia, Moderate

China
Southern College of Optometry
Alcon Research

Recruiting

Total30 for Astigmatism Contact Lenses

Refractive Errors | Astigmatism | Contact Lens Complication

United States
EyeQue Corp.
The Emmes Company, LLC

Not yet recruiting

EyeQue VisionCheck 510(k) Clinical Trial

Refractive Errors | Astigmatism
Acuity Polymers, Inc.

Not yet recruiting

Acuity 200™ (Fluoroxyfocon A) Orthokeratology Contact Lens for Overnight Wear (Acuity200OK)

Myopia

United States, Australia, New Zealand
Bausch & Lomb Incorporated

Recruiting

Study of Safety and Effectiveness of the Boston Orthokeratology Shaping Lens in the Arise Orthokeratology Lens

Astigmatism

United States
Omeicos Therapeutics GmbH

Recruiting

OMT-28 in Patients With Primary Mitochondrial Disease (PMD) (PMD-OPTION) (PMD-OPTION)

Primary Mitochondrial Disease

Netherlands, Germany, Italy
Instituto de fertilidad humana, InSer
University of Alabama at Birmingham; Colmédicos S.A.S.; ABAD Laboratorio

Recruiting

Phenotype and Epidemiology of the Polycystic Ovary Syndrome (PCOS) in Colombia (PEP - Colombia) Study. (PEP-Colombia)

Endocrine System Diseases | Polycystic Ovary Syndrome | Hyperandrogenism

Colombia
59th Medical Wing

Not yet recruiting

SMILE vs. LASIK Using Contoura With Phorcides

Astigmatism | Myopia

United States
Hebatallah MT Abdelmoniem

Not yet recruiting

Contoura vs Wavefront Optimized Ablation

Astigmatism
Al-Azhar University

Recruiting

The Effect of Intraoperative Infusion of Dexmedetomidine Versus Low Dose Ketamine

Nasal Polyps | Functional Endoscopic Sinus Surgery | Nasal Septum, Irregular

Egypt
Alcon Research

Recruiting

Post Market Clinical Follow-up (PMCF) Study of Clareon Vivity & Clareon PanOptix

Presbyopia | Astigmatism | Aphakia

United States, Puerto Rico
Kasr El Aini Hospital

Recruiting

Correlation Between Preoperative Refraction and Anterior Segment Parameters With ICL Vault

Refractive Errors | Myopia | Myopic Astigmatism

Egypt
University of Plymouth
Carl Zeiss Meditec AG; University Hospital Plymouth NHS Trust; Glasgow Caledonian... and other collaborators

Recruiting

Vision and Balance Changes After Bilateral Implantation of Toric IOLs

Cataract Bilateral | Astigmatism Bilateral

United Kingdom
Hoopes Vision
Alcon Research

Recruiting

Contralateral Study of Topography Guided LASIK Versus Small Incision Lenticule Extraction

Astigmatism | Myopia

United States
Hopital Foch

Recruiting

Stent Retriever Versus Contact Aspiration in Irregular Occlusion Phenotype (STRIPE)

Stroke, Acute

France
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
Sohag University

Not yet recruiting

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

Corneal Astigmatism
Kenneth J Rosenthal
Johnson & Johnson Surgical Vision, Inc.

Not yet recruiting

Astigmatism Management With Iris-registration Guided Corneal Relaxing Incisions or Toric IOLs During Cataract Surgery

Cataract | Astigmatism

United States
University of Nevada, Las Vegas

Recruiting

An Uneven Terrain Surface to Improve Locomotor Robustness in People With Amputation

Amputation

United States
Guy's and St Thomas' NHS Foundation Trust
King's College London; City, University of London

Not yet recruiting

Comparison of Aspheric Toric Intraocular Lenses for Micro-monovision

Cataract | Presbyopia | Astigmatism

United Kingdom
Daniel Terveen
Alcon Research

Recruiting

Contoura With Phorcides Compared to Wavefront Optimized LASIK

Astigmatism | Myopia

United States
Ziemer Ophthalmic Systems AG

Not yet recruiting

CLEAR Procedure in Myopia and Astigmatism - Registry Study

Astigmatism | Myopia

Search clinical trials for: irregular astigmatism

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