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Results for “Ocular, Refraction”

95 trials

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Showing 20 of 95 results

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 completedNCT04174209
What this trial is testing

CHOICE OF SUBJECTIVE OCULAR REFRACTION TECHNIQUE AND CORNEAL TOPOGRAPHY OF KERATOCONUS

Who this might be right for
KeratoconusAlteration of Visual Acuity
University Hospital, Clermont-Ferrand 52
Not applicableUnknownNCT04955379
What this trial is testing

Study in Pediatric Volunteers of a Handheld Device Versus a Standard Diagnostic Device in Ophthalmic Refraction

Who this might be right for
Refractive ErrorsAccomodationDiagnostic Self Evaluation
EyeQue Corp. 50
Not applicableStudy completedNCT06452524
What this trial is testing

Prematurity and Ophthalmological Changes

Who this might be right for
Retinopathy of PrematurityMyopia
Ankara City Hospital Bilkent 211
Not applicableStudy completedNCT03292614
What this trial is testing

Measurement of Refractive SE Following Implantation of LS313 MF30 IOL

Who this might be right for
Refractive Errors
Dietrich-Bonhoeffer-Klinikum 25
Not applicableUnknownNCT04045951
What this trial is testing

Effect of Using Myopia Prediction Algorithm on Myopia School-aged Children

Who this might be right for
Myopia
Sun Yat-sen University 2,138
Not applicableLooking for participantsNCT05366543
What this trial is testing

Errors of Refraction Among Primary School Children

Who this might be right for
Error, Refractive
Minia University 150
Not applicableUnknownNCT03222661
What this trial is testing

Direct Comparison of SVOne Obtained Refraction to Subjective Manifest Refraction

Who this might be right for
Refractive Errors
Smart Vision Labs 200
Not applicableStudy completedNCT02761850
What this trial is testing

Developmental Profile of Ocular Refraction in Patients With Congenital Cataract

Who this might be right for
Cataract
Sun Yat-sen University 1,164
Not applicableStudy completedNCT03142269
What this trial is testing

The Influences Of Anterior Capsule Polishing On Anterior Capsular Changes and Intraocular Lenses Stability of Super High Myopic Eyes

Who this might be right for
Myopia, High, With Cataract and Anterior Capsule Polished
yin ying zhao 20
Not applicableStudy completedNCT04249505
What this trial is testing

Refractive Accuracy of "2WIN" and Portable Autorefractors

Who this might be right for
Refractive Error - Myopia AxialAstigmatismAccomodation+2 more
Alaska Blind Child Discovery 708
Not applicableStudy completedNCT06449976
What this trial is testing

Application and Clinical Evaluation of Longitudinal Chromatic Aberration Technique in Ophthalmology

Who this might be right for
Longitudinal Chromatic AberrationBlue Light Defocus Manipulation
Beijing Tongren Hospital 21
Not applicableStudy completedNCT00978679
What this trial is testing

Peripheral Optics in Myopia and Orthokeratology

Who this might be right for
Myopia
The Hong Kong Polytechnic University 90
Not applicableStudy completedNCT03456245
What this trial is testing

Comparing Low-cost Handheld Autorefractors - a Practical Approach to Measuring Refraction in Low Resource Settings

Who this might be right for
MyopiaHyperopia
Harvard School of Public Health (HSPH) 205
Not applicableStudy completedNCT06758843
What this trial is testing

Comparing Relative Peripheral Refraction on Myopia Progression

Who this might be right for
Myopia
Fuzhou Southeast Institute of Visual Ophthalmology 6,000
Not applicableUnknownNCT00172913
What this trial is testing

Aberration-Free Refraction Correction

Who this might be right for
Myopia
National Taiwan University Hospital 60
Testing effectiveness (Phase 2)UnknownNCT06161311
What this trial is testing

Baseline Relative Peripheral Refraction in Myopia Control

Who this might be right for
Myopia
The Hong Kong Polytechnic University 80
Post-approval studies (Phase 4)Study completedNCT05442801
What this trial is testing

Cycloplegic Refraction Among Children

Who this might be right for
Cycloplegia
Islamic Hospital, Jordan 55
Not applicableUnknownNCT02300116
What this trial is testing

Smart Vision Labs Autorefractor

Who this might be right for
Ocular Refraction
Smart Vision Labs 50
Not applicableLooking for participantsNCT06219252
What this trial is testing

Intraoperative Aberrometry vs Conventional Intraocular Lens Calculation, a Prospective Study.

Who this might be right for
Intraocular Lens ImplantationCataractHumans+1 more
Instituto de Oftalmología Fundación Conde de Valenciana 300
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