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Results for “Measurement of Refractive Error”

26 trials

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Showing 20 of 26 results

Not applicableStudy completedNCT01775007
What this trial is testing

A Pilot Study to Test the Safety and Feasibility of a Brillouin Ocular Analyzer

Who this might be right for
Measurement of the Elasticity of the Anterior Eye Segment
Massachusetts General Hospital 31
Not applicableStudy completedNCT06797856
What this trial is testing

Measurement of Refractive Error in Pseudophakic Eyes Using an Autorefractor and a Wavefront Aberrometer

Who this might be right for
Measurement of Refractive Error
Johnson & Johnson Surgical Vision, Inc. 46
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 applicableStudy completedNCT06045325
What this trial is testing

Assessment of Measurement Variability Across Automated Biometry Devices

Who this might be right for
Myopia
Berkeley Eye Center 204
Not applicableStudy completedNCT02627157
What this trial is testing

Measurements of Corneal Biomechanical Properties Using a Dynamic Scheimpflug Analyzer for Young Healthy Adults in South Korea

Who this might be right for
Myopia
Yonsei University 472
Not applicableStudy completedNCT05905237
What this trial is testing

Measurement of Antioxidant Activity on Postoperative Inflammation in Patients Undergoing Ophthalmic Surgery

Who this might be right for
CataractMyopia
Chang Gung Memorial Hospital 132
Not applicableNot Yet RecruitingNCT07240480
What this trial is testing

Assessing the Turkish DDIVAT for Visual Acuity Measurement

Who this might be right for
Visual AcuityRefractive ErrorsMyopia+2 more
Trakya University 200
Not applicableLooking for participantsNCT06882408
What this trial is testing

The Objective of This Study is to Evaluate the Perfomance of a Photorefraction Device for Screening Ametropia in Children. Eligible Participants Will Undergo Multiple Refractive Error Measurements, Visual Acuity and Strabismus Assessments During a Single Evaluation Visit.

Who this might be right for
AmetropiaMyopia; Refractive ErrorMyopia; Astigmatism
Essilor International 315
Not applicableEnded earlyNCT01884805
What this trial is testing

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

Who this might be right for
Hyperopia
University Hospital, Toulouse 9
Not applicableStudy completedNCT03655743
What this trial is testing

PRO Measure for Refractive Surgery IRAS Project Number 246072

Who this might be right for
Refractive ErrorsSatisfactionCornea+1 more
Moorfields Eye Hospital NHS Foundation Trust 372
Not applicableUnknownNCT02687022
What this trial is testing

Measurement Repeatability in Contemporary Aberrometry

Who this might be right for
Refractive Errors
Moorfields Eye Hospital NHS Foundation Trust 60
Not applicableUnknownNCT05458661
What this trial is testing

Feasibility Investigation of Biometry and Tomography Measurements in a Heterogeneous Patient Cohort

Who this might be right for
CataractLens OpacitiesArtificial Lens Implant+3 more
Carl Zeiss Meditec AG 100
Not applicableStudy completedNCT03162471
What this trial is testing

How Astigmatism Influences Corneal Biomechanics and Intraocular Pressure

Who this might be right for
Corneal AstigmatismIntraocular PressureCataract Senile
Medical University of Lodz 39
Not applicableLooking for participantsNCT06743594
What this trial is testing

Measurement of Antioxidant Activity and Oxidative Stress in Patients Undergoing Ophthalmic Surgery.

Who this might be right for
CataractMyopia
Chang Gung Memorial Hospital 1,000
Not applicableNot Yet RecruitingNCT07335146
What this trial is testing

Eye Imaging for the Study of Childhood Myopia

Who this might be right for
Hyperopia and Myopia
Essilor International 100
Not applicableNot Yet RecruitingNCT07051317
What this trial is testing

AOSLO-Based Precise Measurement of Retinal Hemodynamics: Development and Application Assessment

Who this might be right for
Myopia, High-GradeMyopia; Refractive Error
Zhongshan Ophthalmic Center, Sun Yat-sen University 120
Not applicableStudy completedNCT06209476
What this trial is testing

Clinical Investigation on Assessing the Repeatability and Reproducibility of Central and Peripheral Refractive Error

Who this might be right for
Refractive Error
Johnson & Johnson Vision Care, Inc. 30
Not applicableActive Not RecruitingNCT03906279
What this trial is testing

Choroidal Thickness Change in Response to Physiological and Refractive Changes

Who this might be right for
Refractive ErrorsAccommodation Disorder
Wrocław University of Science and Technology 250
Not applicableStudy completedNCT01893671
What this trial is testing

Corneal Power, Astigmatism, and Aberration Changes After LASIK

Who this might be right for
Measurements of Patients Using OCT Before and After LASIK
Oregon Health and Science University 22
Not applicableUnknownNCT00741130
What this trial is testing

Corrected Measurement of the Retinal Nerve Fiber Layer Thickness by Optic Disc Configuration With the Cirrus HD OCT

Who this might be right for
GlaucomaMyopia
Yonsei University 50
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