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Refractive Errors

Showing 26 - 50 of 1,438
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Errors of Refraction Among Primary School Children

Recruiting
  • Error, Refractive
  • Visual acuity measurement
  • Minya, Minia, Egypt
    Faculty of Medicine
Oct 7, 2022

Myopia, Refractive Errors Trial in Anqing (Six interventions for children and adolescents)

Recruiting
  • Myopia
  • Refractive Errors
  • Six interventions for children and adolescents
  • Anqing, Anhui, China
    Anqing myopia scene
Feb 8, 2023

Eye Diseases, Presbyopia, Refractive Errors Trial in Newport Beach (Aceclidine + Brimonidine, Aceclidine)

Recruiting
  • Eye Diseases
  • +5 more
  • Newport Beach, California
    Site #101
Jul 7, 2023

Accomodation, Refractive Errors, Myopia Trial (1% atropine)

Recruiting
  • Accomodation
  • +3 more
  • 1% atropine
  • Shanghai, Shanghai, China
    Shanghai Eye Diseases Prevention & Treatment Center
Jan 1, 2023

Safety Outcomes Following Implantation ofAddOn Intraocular Lens

Not yet recruiting
  • Presbyopia
  • +2 more
  • supplementary intraocular lenses
  • Antwerpen, Belgium
  • +3 more
Oct 24, 2022

Free-toroidal Design Lenses on Subjective Visual Quality in

Completed
  • Myopia
  • Refractive Errors
  • The free-toroidal design lenses
  • Tianjin, China
    Tianjin Eye Hospital
Jan 11, 2023

Refractive Errors Trial in Sydney, Athens (UV fs-Laser, IR fs-Laser, LASIK)

Not yet recruiting
  • Refractive Errors
  • UV fs-Laser
  • +2 more
  • Sydney, New South Wales, Australia
  • +1 more
Aug 28, 2023

Environmental Factors for Myopia Among Chinese School-aged

Recruiting
  • Myopia
  • Refractive Errors
    • Tianjin, Tianjin, China
      Tianjin Eye Hospital
    Nov 26, 2022

    Myopia, Refractive Errors, Eye Diseases Trial in Guangzhou (Novel LEDs)

    Not yet recruiting
    • Myopia
    • +2 more
    • Novel LEDs
    • Guangzhou, Guangdong, China
      Zhongshan Ophthalmic Center, Sun Yat-sen University
    Feb 17, 2023

    Clinical Investigation of Refraction Techniques

    Recruiting
    • Refractive Error
    • Refractive Technique (MR #1)
    • Refractive Technique (MR #2)
    • Birtinya, Queensland, Australia
      Sunshine Eye Clinic
    Aug 8, 2022

    Myopia, Refractive Errors, Eye Diseases Trial in Shanghai (RLRL)

    Not yet recruiting
    • Myopia
    • +3 more
    • RLRL
    • Shanghai, Shanghai, China
      Shanghai Eye Disease Prevention and Treatment Center
    Oct 24, 2022

    Air Optix Daily Wear Contact Lenses

    Not yet recruiting
    • Refractive Errors
    • Lotrafilcon B spherical soft contact lenses
    • +4 more
    • Fort Worth, Texas
      Contact Alcon Call Center for Trial Locations
    Apr 13, 2023

    Refractive Ametropia Trial in Rochester (Kalifilcon Toric Lens, Total1 for Astigmatism, Precision1 for Astigmatism)

    Completed
    • Refractive Ametropia
    • Kalifilcon Toric Lens
    • +3 more
    • Rochester, New York
      Bausch & Lomb, Incorporated
    Oct 23, 2023

    High Myopia, Refractive Errors, Eye Diseases Trial in Shanghai (RLRL)

    Not yet recruiting
    • High Myopia
    • +2 more
    • RLRL
    • Shanghai, Shanghai, China
      Shanghai Eye Disease Prevention and Treatment Center
    Oct 17, 2022

    Refractive Errors, Accommodation Disorder Trial in Wroclaw

    Active, not recruiting
    • Refractive Errors
    • Accommodation Disorder
      • Wrocław, Poland
        Department of Optics and Photonics
      Mar 27, 2022

      Refractive Errors, Satisfaction, Cornea Trial in London (LASIK, PRK, Phacoemulsification)

      Completed
      • Refractive Errors
      • +3 more
      • LASIK, PRK, Phacoemulsification
      • London, United Kingdom
        Moorfields Eye Hospital NHS Foundation Trust, 162 City Road
      Apr 4, 2022

      Refractive Errors, Aberration, Corneal Wavefront Trial in Wroclaw

      Active, not recruiting
      • Refractive Errors
      • Aberration, Corneal Wavefront
        • Wrocław, Poland
          Department of Optics and Photonics
        Mar 27, 2022

        Presbyopia, Refractive Errors, Cataract Trial in Alexandroupolis (bUDVA, bUIRA, bUNRA, bUICPS, bUNCPS, Contrast sensitivity)

        Recruiting
        • Presbyopia
        • +2 more
        • bUDVA, bUIRA, bUNRA, bUICPS, bUNCPS
        • Contrast sensitivity
        • Alexandroupolis, Evros, Greece
          Department of Ophthalmology, University Hospital of Alexandroupo
        Aug 6, 2022

        Down Syndrome, Refractive Errors Trial in Columbus, Houston (Dilated Refraction, Non-Dilated Refraction)

        Recruiting
        • Down Syndrome
        • Refractive Errors
        • Dilated Refraction
        • Non-Dilated Refraction
        • Columbus, Ohio
        • +1 more
        May 10, 2022

        Myopia, Amblyopia, Refractive Error - Myopia Axial Trial in Beijing (Airdoc device of red light for Myopia)

        Completed
        • Myopia
        • +3 more
        • Airdoc device of red light for Myopia
        • Beijing, Haidian District, China
          Qiu Jenny
        Jul 20, 2023

        Rapid Computerized Visual Acuity Test

        Recruiting
        • Vision Disorders
        • +4 more
        • Computerized visual acuity assessment program
        • Haifa, Israel
          Department of Ophthalmology at Rambam Health Care Campus
        Jul 3, 2022

        Blindness,Visual Impairment, Refractive Error, Cataract, High Myopia, Aging Trial in Shanghai (spectacles)

        Recruiting
        • Blindness,Visual Impairment, Refractive Error, Cataract, High Myopia, Aging
        • spectacles
        • Shanghai, Shanghai, China
          Shanghai Eye Disease Prevention & Treatment Center
        May 17, 2022

        The Initiating Factors of Myopia Among Primary and Secondary

        Recruiting
        • Myopia; Refractive Error
        • No intervention
        • Tianjin, Tianjin, China
          Tianjin Eye Hospital
        Nov 26, 2022

        After Contoura® Refractive Surgery Planned Using Phorcides

        Completed
        Has Results
        • Refractive Errors
        • Phorcides Analytical Engine
        • Atlanta, Georgia
        • +4 more
        Feb 9, 2022

        Refractive Errors Trial in Manchester (Lehfilcon A contact lenses, Senofilcon A contact lenses, AOSEPT PLUS with HydraGlyde)

        Completed
        • Refractive Errors
        • Lehfilcon A contact lenses
        • +2 more
        • Manchester, United Kingdom
          Alcon Investigator 8137
        Jul 20, 2022