Search clinical trials for: Ocular aberration

Total 15395 results

Southern College of Optometry

Not yet recruiting

Higher Order Aberration and Relationship With Soft Contact Lens Modulus

Corneal Wavefront Aberration
Johnson & Johnson Vision Care, Inc.

Recruiting

Characterization of the Central and Peripheral Wavefront Aberration Profile in Pediatric Myopic Subjects

Myopia

United States
Sohag University

Not yet recruiting

Correlation of Angle Kappa , Corneal High Order Aberrations and Total Eye Aberrations in Various Refractive Errors

Aberration, Corneal Wavefront
Benha University

Recruiting

Ocular Changes With Alpha-2 Receptor Agonist.

Glaucoma, Suspect | Aberration, Corneal Wavefront

Egypt
Anova Enterprises, Inc

Recruiting

AnovaOS Network Powered Patient Registry

Neoplasms | Infectious Disease | External Causes of Morbidity and Mortality | Pregnancy, Childbirth and the Puerperium | Diseases of the Blood and Blood-Forming Organs and Certain Disorders Involving the Immune Mechanism (D50-D89) | Endocrine, Nutritional and Metabolic Diseases (E00-E89) | Mental... and other conditions

United States
Kasr El Aini Hospital

Not yet recruiting

Contribution of SA and Coma to The Total Ocular HOA Before and After FS-LASIK Using An Aspheric Ablation Profile

FS-LASIK Surgery Effect on Higher Order Aberrations

Egypt
Sanford Health
National Ataxia Foundation; Beyond Batten Disease Foundation; Pitt Hopkins Research... and other collaborators

Recruiting

Rare Disease Patient Registry & Natural History Study - Coordination of Rare Diseases at Sanford (CoRDS)

Mitochondrial Diseases | Retinitis Pigmentosa | Myasthenia Gravis | Eosinophilic Gastroenteritis | Multiple System Atrophy | Leiomyosarcoma | Leukodystrophy | Anal Fistula | Spinocerebellar Ataxia Type 3 | Friedreich Ataxia | Kennedy Disease | Lyme Disease | Hemophagocytic Lymphohistiocytosis | Spinocerebellar Ataxia... and other conditions

United States, Australia
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
Sanguine Biosciences

Completed

At-Home Research Study for Patients With Autoimmune, Inflammatory, Genetic, Hematological, Infectious, Neurological, CNS, Oncological, Respiratory, Metabolic Conditions

Depression | Melanoma | Epilepsy | Lymphoma | Multiple Sclerosis | Kidney Cancer | Cervical Cancer | Diabetes Mellitus | Leukemia | Breast Cancer | Chronic Kidney Diseases | Chronic Obstructive Pulmonary Disease | Parkinson's Disease | Systemic Lupus Erythematosus | Multiple Myeloma | Hepatitis B | Insomnia | Colorectal Cancer | HIV/AID... and other conditions

United States
Brighton and Sussex University Hospitals NHS Trust
King's College London; European Society of Cataract and Refractive Surgeons

Completed

Monofocal Extended Range of Vision (MERoV) Study (MERoV)

Pseudophakia | Accomodation | Aberration, Corneal Wavefront

United Kingdom
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
Tianjin Eye Hospital

Completed

Changes of Optical Quality During the Peak of the Covid-19 Pandemic

SARS-CoV-2 | Corneal Wavefront Aberration

China
Stanford University

Completed

LASIK Using the Alcon Allegretto Wavefront-Guided Excimer Laser vs AMO Visx Wavefront-Guided Excimer Laser (LASIK)

Astigmatism | Myopia

United States
Wrocław University of Science and Technology
Wroclaw Medical University

Active, not recruiting

Chromatic and Monochromatic Optical Aberrations After Corneal Refractive Surgery

Refractive Errors | Aberration, Corneal Wavefront

Poland
Wenzhou Medical University

Completed

The Influence of Meibomian Gland Expression on Corneal Aberrations in MGD Patients

Meibomian Gland Dysfunction

China
Wenzhou Medical University

Enrolling by invitation

Visual Performance of Multifocal Intraocular Lenses

Cataract | IOL

China
Research Insight LLC

Completed

Effect of Cequa Treatment on Accuracy of Pre-operative Biometry & Higher Order Aberrations in Dry Eye Patients Undergoing Cataract Surgery

Dry Eye Syndromes

United States
Saglik Bilimleri Universitesi Gazi Yasargil Training...

Completed

The Effect of Thyroid Hormon Levels on the Corneal Measures

Corneal Opacity | Thyroid Disorder

Turkey
Cairo University

Unknown

Postoperative Total Wavefront Pattern Between Two Types of Intraocular Lenses Implanted in Cataract Surgery

Cataract

Egypt
Wang Hongxia
Tianjin Eye Hospital

Unknown

Comparison of Anterior Corneal Optical Aberration Induced by CK and Hyperopic LASIK

Refractive Error

China
Medical University of Vienna

Unknown

Digital Wavefront Sensing (DWS)

Refractive Errors | Wavefront Aberration, Corneal
Alexandria University

Completed

Analysis of I-Trace High Order Aberrations Induced by Wavefront Optimized Ablation Profiles

Myopia

Egypt
University Hospital, Toulouse
Centre de Référence National du Kératocône

Terminated

Feasibility of Measurement of Optical Aberrations in Hyperopia by Using an Adaptive Optics Visual Simulator (AOVIS-I) (HyperVOPTICA)

Hyperopia

France
Yonsei University

Completed

Changes of Tear-film Lipid Layer Thickness and Ocular Aberration After Treatment of Meibomian Gland Dysfunction

Meibomian Gland Dysfunction

Korea, Republic of
Menoufia University

Completed

Corneal WFG Versus AF Trans PRK in Myopic Patients With High Corneal HOA

Myopia
Tianjin Eye Hospital
Gansu Provincial Hospital; Health Science Center of Xi'an Jiaotong University; Xinjiang Medical University and other collaborators

Unknown

Multi-center Clinical Trial on Corneal Morphology Analysis in Chinese Population

Cornea

China
Oregon Health and Science University
National Eye Institute (NEI)

Completed

Corneal Power, Astigmatism, and Aberration Changes After LASIK

Measurements of Patients Using OCT Before and After LASIK

United States
Bojie Hu

Unknown

Comparison of the Visual Quality of Traditional Ultrasound Biometrics and Lenstar on the Cataract After Pars Plana Vitrectomy (PPV)

Diabetic Retinopathy Patients After Vitrectomy

China
Fondation Ophtalmologique Adolphe de Rothschild

Completed

Visual and Optics Impact of Refractive Surgery (CRIVO)

Refractive Disorders

France
Hospital Hietzing

Completed

Long-term Intraocular Lens (IOL) Decentration and Tilt in Eyes With Pseudoexfoliation Syndrome (PES) Following Cataract Surgery

Cataract | Pseudophakia | Pseudoexfoliation Syndrome
National Eye Institute (NEI)

Completed

Dry Eye in Women With Turner Syndrome and Women With Premature Ovarian Failure

Menopause | Turner Syndrome | Ovarian Failure, Premature | Sex Chromosome Aberrations | Perimenopause

United States
Hospital Hietzing

Completed

Spherical Aberration on the Optical of Two Different Aspherical Intraocular Lenses

Cataract
Medical University of Graz

Completed

Optical Quality After Implantation of a Spherical or Aspherical Intraocular Lens in Hypermetropic Patients

Cataract | Spherical Aberrations | Intraocular Lenses | Depth of Focus

Austria
Fred Hutchinson Cancer Center
National Cancer Institute (NCI)

Completed

Cyclophosphamide for Prevention of Graft-Versus-Host Disease After Allogeneic Peripheral Blood Stem Cell Transplantation in Patients With Hematological Malignancies

Stage III Multiple Myeloma | Chronic Myelomonocytic Leukemia | Recurrent Adult Acute Myeloid Leukemia | Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue | Nodal Marginal Zone B-cell Lymphoma | Recurrent Adult Burkitt Lymphoma | Recurrent Adult Diffuse Large Cell Lymphoma and other conditions

United States
Gina Rogers

Withdrawn

Tears Substitutions and Their Effects on Higher Order Aberrometery

Dry Eye Syndrome

United States
University Hospital, Toulouse

Terminated

Measurement of High Order Aberrations in Late Stages Keratoconus (VOPTICA)

Keratoconus

France
Queen's University

Withdrawn

Study of the Effect of Aspheric Lenses in Patients With Fuch's Dystrophy

Cataracts | Fuch's Endothelial Dystrophy

Canada
The Hong Kong Polytechnic University
Menicon Co., Ltd.

Completed

Peripheral Optics in Myopia and Orthokeratology

Myopia

China
Abbott Medical Optics

Completed

New Treatment Algorithm to Reduce Spherical Aberration After LASIK Correction for Myopia

Astigmatism | Myopia

Colombia
University of Texas Southwestern Medical Center

Completed

Comparison of Higher Order Aberrations and Contrast Sensitivity Between Acrysof SN60AT, SN60WF and Restore Intraocular Lenses

Refractive Errors

United States
Yonsei University

Withdrawn

Changes of Keratometric Value and Ocular Aberration After Treatment of Meibomian Gland Dysfunction

Moderate and Severe Meibomiang Gland Dysfunction (Stage 3 or Stage 4 Meibomiang Gland Dysfunction)
Bausch & Lomb Incorporated

Completed

A Clinical Evaluation of the Next Generation Diagnostic Instrument (NGDI)

Healthy

United States
Medical University of Vienna

Completed

Optical Biometry and Spherical Aberration in Ametropic and Emmetropic Eyes

Refractive Errors | Corneal Wavefront Aberration | Axial Length, Eye

Austria
Alcon Research

Completed

A Comparative Pilot Study Of High-Order Aberrations With Aspheric IOL Models SN60WF and ZCB00

Cataracts

United States
Alcon Research

Completed

An Assessment of Residual Spherical Aberration, Postoperative Total High Order Aberrations, and Functional Vision Correlation Following Intraocular Lens (IOL) Implantation

Cataracts

United States
Alcon Research

Completed

A Comparison of Corneal Aberrations in Subjects With Contralateral AcrySof IQ Toric Intraocular Lens (IOL) and AcrySof IQ IOL With Limbal Relaxing Incision (LRI)

Cataract | Astigmatism

United States
Alcon Research

Withdrawn

Investigation of Corneal Aberrations and Visual Outcomes in Patients Implanted With an AcrySof Toric Intraocular Lens (IOL)

Astigmatism | Cataracts
Alcon Research

Withdrawn

Comparison of Corneal Aberrations and Visual Outcomes in AcrySof IQ Toric Patients Versus Limbal Relaxing Incision (LRI) Patients

Cataracts

United States
Democritus University of Thrace

Completed

Accuracy of Curvature and Wavefront Aberrations of Posterior Corneal Surface, in Keratoconic and Post-CXL Corneas

Keratoconus

Greece
Ramathibodi Hospital

Completed

Sodium Hyaluronate and Wavefront Aberrations in Dry Eyes

Dry Eye

Thailand

Search clinical trials for: Ocular aberration

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