Refractive Errors: all 427 studies
Page 1 of 5. Open to participants first (62), then studies with results posted, then the rest; newest registration first within each.
- Evaluation of the Agreement Between Automated Program-Operated Phoropter Subjective Refraction and Optometrist-Performed Subjective RefractionNot yet recruitingNCT07891897Not applicable
- Consistency of an Automated Subjective Refraction Program Between Personnel With Diverse Professional Backgrounds and Senior OptometristsNot yet recruitingNCT07891884Not applicable
- Dual-Action Lenses for Slowing Myopia in Children and Teens: A Randomized, Double-Blind TrialNot yet recruitingNCT07854457Not applicable
- Comparing Myopia Control Spectacle Lenses and Standard Single Vision Spectacle Lenses in Children With MyopiaNot yet recruitingNCT07839091Not applicable
- Clinical Validation Study Protocol for SmartEyes Smart Optometry Measurement Device (Medical Device Clinical Validation Study)Not yet recruitingNCT07803094
- IOL Position and Refractive Change After Nd:YAG Laser Posterior CapsulotomyNot yet recruitingNCT07802145
- School-based Myopia Prevention Trial for Children With Insufficient Hyperopic ReserveRecruitingNCT07746804Not applicable
- School-based Myopia Control Trial for Children With Premyopia or MyopiaRecruitingNCT07746778Not applicable
- School-based Myopia Prevention Trial for Children With Adequate Hyperopic ReserveRecruitingNCT07746752Not applicable
- IOL Power Formula Prediction Accuracy at the Extremes of Axial Length: A Prospective Outcome Verification StudyNot yet recruitingNCT07724795
- Cohort Study on Refractive Errors in Preschool ChildrenNot yet recruitingNCT07706218
- Comparison of Ketorolac Tromethamine 0.5%-Soaked Bandage Contact Lenses Versus Non-Medicated Bandage Contact Lenses on Postoperative Pain Control After Photorefractive KeratectomyNot yet recruitingNCT07705763Not applicable
- Survey of Sensory Impairment Indicators Among Adults Aged 65 Years and Older in Xinxing CountyNot yet recruitingNCT07694505
- ML Models Predicting Cycloplegic Refractive Error Based on Non-Cycloplegic Parameters in Myopic AdultsRecruitingNCT07690813
- Comparing Myopia Control Spectacle Lenses for Visual Comfort, Adaptation, and Satisfaction in Myopic ChildrenNot yet recruitingNCT07683481Not applicable
- Corneal Epithelial Thickness Mapping by Anterior Segment Optical Coherence Tomography in Patients With Refractive ErrorsNot yet recruitingNCT07647146
- Can Tailored Surgical Incisions Reduce Refractive Error and Dependence on Glasses After Cataract Surgery?Not yet recruitingNCT07623317Not applicable
- Community-Based Eye Screening With Structured Referral Tracking for Preventing Avoidable Blindness in Adults in Rawalpindi, PakistanNot yet recruitingNCT07611682Not applicable
- Factors Influencing Subjective Visual Quality in Human EyesNot yet recruitingNCT07518316Not applicable
- Comparison of PRESBYOND Laser Blended Vision and Conventional Monovision LASIK in Individuals With Presbyopia: A Randomized Clinical StudyRecruitingNCT07512089Not applicable
- Morphological Characteristics of the Maxillomandibular Region in a 3D Representation and the Refractive Status of the EyeRecruitingNCT07460557
- Retinopathy of Prematurity - Visual Function and Retinal StructureNot yet recruitingNCT07427719
- An Evaluation of Myopia Control Lenses on Wearing Experience in Myopic ChildrenRecruitingNCT07354945Not applicable
- Strengthening Community- to- Hospital Eye Care Pathways From Boko Eye Care Center in Rural AssamNot yet recruitingNCT07333248Not applicable
- Xinxing Eye Cohort StudyNot yet recruitingNCT07257536
- Measurment of Optic Disc Parameters, RNFL Thickness and Ganglion Cell Complex in Myopic, Hypermetropic and Emmetropic Patients Using OCT and Axial Length MeasurmentsNot yet recruitingNCT07241806
- Assessing the Turkish DDIVAT for Visual Acuity MeasurementNot yet recruitingNCT07240480
- Comparison Of Keratometric Readings Pre and Post Pterygium Excision With Conjunctival Autograft TransplantationEnrolling by invitationNCT07198126Not applicable
- Measuring Changes In Choroidal Thickness Induced By Prototype Soft Contact Lenses Worn For 1 HourRecruitingNCT07155551Not applicable
- "My Eyes, My Light": Amar Chokh, Amar AloRecruitingNCT07135570
- AOSLO-Based Precise Measurement of Retinal Hemodynamics: Development and Application AssessmentNot yet recruitingNCT07051317
- Evaluation of the Effects of Virtual Reality on Preoperative Anxiety in Refractive SurgeryRecruitingNCT07050498Not applicable
- Algorithm-assisted Subjective Refraction Program Dedicated to ChildrenRecruitingNCT07046065Not applicable
- Research on a New Intelligent Mobile Screening and Diagnosis Pattern for Ocular DiseasesNot yet recruitingNCT07003165
- Clinical Data Collection of Myopic Patients After PTK-PRK With CZM MEL 90 Excimer LaserRecruitingNCT06996353
- Clinical Study of SMILE 4.0-VISULYZE in Correcting Refractive ErrorsRecruitingNCT06982807Not applicable
- North American Comfilcon A Clinical StudyRecruitingNCT06902584
- 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.RecruitingNCT06882408Not applicable
- Clinical Investigation of a Novel Spectacle Lens on Slowing Down Juvenile Myopia ProgressionRecruitingNCT06850168Not applicable
- Real-World Study of Myopia Prevention and Control in ChildrenNot yet recruitingNCT06849895
- Minimum Power and Frequency of Repeated Low-level Red-light to Effectively Control Myopia ProgressionRecruitingNCT06717048Not applicable
- Optimizing Light Exposure for Myopia Prevention and Control (LightSPAN)RecruitingNCT06631339Not applicable
- Evaluate the Safety and Effectiveness of the AccuraSee™ IOPCL for Secondary Implantation in the Capsular Bag to Improve Near and/or Intermediate Vision Following Previous Cataract SurgeryRecruitingNCT06625749Not applicable
- Clinical Investigation for a Multifunction Ophthalmic Measurement DeviceRecruitingNCT06565091Not applicable
- The Effect of Refractive Errors on Central Corneal Thickness by Using Pentacam and IOL MasterNot yet recruitingNCT06484894
- A Study to Evaluate the Safety and Efficacy of the Bausch + Lomb Myopia Control Lens for the Correction of Myopic Ametropia and Slowing the Progression of Myopia in ChildrenRecruitingNCT06305663Not applicable
- Identification of Minimum Focal Points in Vision Curve FormationRecruitingNCT06260852
- Changes in Angle Kappa and Corneal Back Elevations After Laser in Situ Keratomileusis in Myopic AstigmatismNot yet recruitingNCT06166212
- Cycloplegic Refraction in Pediatric Patients With EsotropiaRecruitingNCT06077682Phase 4
- Evaluation of Different Lenticule Diameters in Myopic Astigmatism Correction With SMILE ProceduresRecruitingNCT06062004Not applicable
- EyeQue VisionCheck 510(k) Clinical TrialNot yet recruitingNCT06044688Not applicable
- Effect of Peripapillary Atrophy to Diagnose Glaucoma in High MyopiaNot yet recruitingNCT05964634
- To Study the Effects of Refractive Surgery on OCT Measurements in the EyeRecruitingNCT05856786
- Effect of Colour Temperature of Reading Lamp on Refractive Error DevelopmentRecruitingNCT05733182Not applicable
- Community Intervention and Demonstration Area ConstructionRecruitingNCT05715424Not applicable
- Correlation Between Preoperative Refraction and Anterior Segment Parameters With ICL VaultEnrolling by invitationNCT05670626Not applicable
- Prospective Multicenter Clinical Study on the Visual and Refractive Outcomes and Safety Outcomes Following Implantation of an AddOn Intraocular Lens in Previously Pseudophakic EyesRecruitingNCT05596682
- Cognitive Level Enhancement Through Vision Exams and RefractionRecruitingNCT05458323Not applicable
- Errors of Refraction Among Primary School ChildrenRecruitingNCT05366543
- Prevalence and Environmental Factors for Myopia Among Chinese School-aged Children and Adolescent in TianjinRecruitingNCT05336799
- Shanghai Eye Study for AdultsRecruitingNCT03455478Not applicable
- Corneal Elastography and Patient Specific ModelingRecruitingNCT03030755
- VisionApp - Refraction and PresbyopiaCompletedNCT07570602Not applicableResults posted
- Evaluation of the Safety and Efficacy of PEGAVISION Silicone Hydrogel Daily Disposable Soft Contact Lenses (G3)CompletedNCT06995781Results posted
- Evaluation of Delefilcon A Contact LensesCompletedNCT06884202Not applicableResults posted
- Clinical Evaluation of Biomedics Monthly Sphere and Avaira Vitality SphereCompletedNCT06400914Not applicableResults posted
- Safety and Suitability of ICL for Correction of Refractive Errors Without the Use of Dispersive OVDsCompletedNCT06371079Results posted
- Comparison of Clinical Performance of Two Monthly Replacement Toric Soft Contact LensesCompletedNCT06165627Not applicableResults posted
- Clinical Assessment of a Daily Disposable Soft Silicone Hydrogel Contact LensCompletedNCT06044948Not applicableResults posted
- Clinical Performance Evaluation of Two Frequent Replacement Silicone Hydrogel Toric Contact LensesCompletedNCT05959200Not applicableResults posted
- Assessing the Clinical Performance of Two Frequent Replacement Silicone Hydrogel Multifocal Toric Contact LensesCompletedNCT05886907Not applicableResults posted
- The Clinical Performance of Two Reusable Silicone Hydrogel Contact LensesCompletedNCT05766787Not applicableResults posted
- Clinical Evaluation of a Manufacturing Process for a Frequent Replacement Silicone Hydrogel Multifocal Contact LensCompletedNCT05765227Not applicableResults posted
- Phase 3 Safety Study of LNZ100 and LNZ101 for the Treatment of Presbyopia SubjectsCompletedNCT05753189Phase 3Results posted
- Phase 3 Efficacy Study of LNZ100 & LNZ101 for the Treatment of PresbyopiaCompletedNCT05728944Phase 3Results posted
- Clinical Performance Assessment of Two Silicone Hydrogel Daily Disposable Contact LensesCompletedNCT05725317Not applicableResults posted
- Phase 3 Evaluation of the Safety and Efficacy of LNZ100 & LNZ101 for the Treatment of PresbyopiaCompletedNCT05656027Phase 3Results posted
- A Study to Evaluate the Safety and Effectiveness of a Contact Lens Cleaning and Disinfecting SolutionCompletedNCT05565937Not applicableResults posted
- Clinical Evaluation of Two Daily Disposable Lenses in Sphere DesignCompletedNCT05516082Not applicableResults posted
- Clinical Comparison of Two Daily Disposable Toric Soft Contact LensesCompletedNCT05483127Not applicableResults posted
- Evaluation of the Safety and Effectiveness of Aceclidine (LNZ101) and Aceclidine + Brimonidine (LNZ100) in the Treatment of PresbyopiaCompletedNCT05431543Phase 2Results posted
- Clinical Performance of Two Reusable Silicone Hydrogel Contact LensesCompletedNCT05431478Not applicableResults posted
- Evaluation of the Safety and Effectiveness of Aceclidine/Brimonidine (LNZ101) and Aceclidine (LNZ100) in the Treatment of PresbyopiaCompletedNCT05294328Phase 2Results posted
- Clinical Assessment of a Daily Wear Monthly Replacement Silicone Hydrogel Toric Contact LensCompletedNCT05211739Not applicableResults posted
- Evaluation of Monthly Replacement Lenses in Habitual Soft Contact Lens Wearers Who Report Frequent Digital Devise UseCompletedNCT05166902Not applicableResults posted
- Clinical Performance of Two Daily Disposable Soft Contact LensesCompletedNCT05138783Not applicableResults posted
- Early Feasibility Study to Evaluate the AccuraSee in Correcting Residual Refractive Errors After Cataract SurgeryCompletedNCT05113979Results posted
- Dilated Versus Non-Dilated Wavefront Corrections for Patients With Down SyndromeCompletedNCT05059041Phase 2Results posted
- Clinical Assessment of Two Daily Wear Reusable Soft Silicone Hydrogel Contact LensesCompletedNCT05056987Not applicableResults posted
- Clinical Assessment of Two Reusable Silicone Hydrogel Contact LensesCompletedNCT05050578Not applicableResults posted
- Clinical Performance of Two Commercial, Daily Disposable Contact LensesCompletedNCT05010512Not applicableResults posted
- Clinical Comparison of Two Daily Disposable Contact Lenses - Pilot Study 3CompletedNCT04942925Not applicableResults posted
- Clinical Performance of Two Daily Disposable Toric Soft Contact LensesCompletedNCT04908488Not applicableResults posted
- Clinical Comparison of Two Daily Disposable Contact LensesCompletedNCT04865354Not applicableResults posted
- Three Daily Wear Monthly Replacement Silicone Hydrogel Contact Lenses With Two Multi-purpose Disinfecting Solution CombinationsCompletedNCT04789382Not applicableResults posted
- Clinical Characterization of an Investigational Frequent Replacement Daily Wear Silicone Hydrogel Sphere Contact LensCompletedNCT04702984Not applicableResults posted
- Clinical Characterization of an Investigational Soft Silicone Hydrogel Contact LensCompletedNCT04631796Not applicableResults posted
- Clinical Comparison of Two Daily Wear Frequent Replacement Silicone Hydrogel Soft Contact LensesCompletedNCT04532099Not applicableResults posted
- Clinical Comparison of 2 Daily Disposable Contact Lenses - Pilot Study 2CompletedNCT04528017Not applicableResults posted
- Clinical Comparison of 2 Daily Disposable Contact Lenses - Pilot Study 1CompletedNCT04527978Not applicableResults posted