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Results for “Refractive Errors”

1,890 trials

Showing 20 of 1,890 results

Early research (Phase 1)Study completedNCT01968486
What this trial is testing

Reduced-fluence Verteporfin Photodynamic Therapy Plus Ranibizumab for Choroidal Neovascularization in Pathologic Myopia

Who this might be right for
Myopia, Degenerative
University of Campania Luigi Vanvitelli 60
Not applicableUnknownNCT05531110
What this trial is testing

Comparison of Two Aspheric Intraocular Lenses for Micro-monovision

Who this might be right for
CataractPresbyopiaPseudophakia
Guy's and St Thomas' NHS Foundation Trust 140
Not applicableStudy completedNCT01155726
What this trial is testing

The Effect of Masking on Subjective Results During Daily Disposable Contact Lens Studies

Who this might be right for
MyopiaHyperopia
CIBA VISION 134
Not applicableUnknownNCT04624035
What this trial is testing

Implantable Phakic Lens (IPCL) VS Implantable Collamer Lens

Who this might be right for
Myopia
Assiut University 60
Not applicableStudy completedNCT06052046
What this trial is testing

Total30 for Astigmatism Contact Lenses

Who this might be right for
Contact Lens ComplicationAstigmatismRefractive Errors
Southern College of Optometry 48
Not applicableUnknownNCT05728762
What this trial is testing

Light Emitting Diodes With a Continuous Spectrum of 430-780nm for Myopia Prevention

Who this might be right for
MyopiaRefractive ErrorsEye Diseases
Zhongshan Ophthalmic Center, Sun Yat-sen University 1,920
Not applicableStudy completedNCT05406973
What this trial is testing

Comparison Between the SBK Microkeratome Versus Femtosecond Laser in Flap Creation During LASIK Surgery for Myopia

Who this might be right for
Refractive Surgery
Kasr El Aini Hospital 60
Not applicableStudy completedNCT05365373
What this trial is testing

The Effect of Treatment Zone Decentration on Axial Length Elongation After Orthokeratology

Who this might be right for
MyopiaOrthokeratology
Tianjin Eye Hospital 251
Not applicableEnded earlyNCT05888337
What this trial is testing

Comparison of Contoura Vision Outcomes Programmed Using the Manifest Refraction Verses Using Phorcides Planning Software in Patients With Oblique Astigmatism

Who this might be right for
MyopiaAstigmatism
Bismarck Lasik 9
Not applicableStudy completedNCT02060461
What this trial is testing

LASIK Flap Thickness and Visual Outcomes Using the WaveLight FS200 Femtosecond Laser

Who this might be right for
Myopia
The Cleveland Clinic 33
Not applicableStudy completedNCT01352442
What this trial is testing

Safety and Effectiveness of the AcuFocus Corneal Inlay ACI7000PDT in Presbyopes

Who this might be right for
Presbyopia
AcuFocus, Inc. 151
Not applicableUnknownNCT04913883
What this trial is testing

Laser Correction of Astigmatism Using Vector Analysis

Who this might be right for
Astigmatism
Assiut University 50
Not applicableStudy completedNCT02719353
What this trial is testing

A Dispensing Clinical Trial of Comfilcon A Extended Range Multifocal Lenses

Who this might be right for
Presbyopia
CooperVision, Inc. 14
Not applicableStudy completedNCT05138783
What this trial is testing

Clinical Performance of Two Daily Disposable Soft Contact Lenses

Who this might be right for
Refractive Errors
Alcon Research 129
Not applicableUnknownNCT02844556
What this trial is testing

International Multicenter Study on SMILE Surgery

Who this might be right for
Refractive Error
Tianjin Eye Hospital 1,000
Not applicableStudy completedNCT03097302
What this trial is testing

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

Who this might be right for
Corneal Astigmatism
University Clinic Frankfurt 23
Not applicableWithdrawnNCT05805345
What this trial is testing

Clinical Comparison of Toric Contact Lenses Fit Characteristics

Who this might be right for
AstigmatismRefractive Errors
Alcon Research
Not applicableStudy completedNCT03496701
What this trial is testing

Performance of Wearers of Stenfilcon A Contact Lenses After A Refit With Test Lenses

Who this might be right for
Myopia
CooperVision, Inc. 77
Not applicableLooking for participantsNCT07127757
What this trial is testing

Clinical Evaluation of WaveLight Plus LASIK

Who this might be right for
MyopiaAstigmatism
Laser Defined Vision 50
Not applicableStudy completedNCT00249275
What this trial is testing

Effectiveness of Alternative Approaches to Providing Spectacles in Tanzanian Secondary School Students

Who this might be right for
Under- and Uncorrected Significant Refractive Errors
London School of Hygiene and Tropical Medicine 250
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