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refractive%20error

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Refractive Errors Trial in Hong Kong (3000K Reading lamp, 4500K Reading lamp, 6500K Reading lamp)

Recruiting
  • Refractive Errors
  • 3000K Reading lamp
  • +2 more
  • Hong Kong, Kowloon, Hong Kong
    Optometry Research Clinic
Feb 14, 2023

Ocular Development and Refractive Error Changes Among Children

Active, not recruiting
  • Myopia
    • Guangzhou, Guangdong, China
    • +1 more
    Mar 14, 2022

    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

    Refractive Error in Chinese Students

    Recruiting
    • Myopia
    • outdoor time
    • Tianjin, China
      Tianjin Eye Hospital
    Nov 11, 2021

    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

    Refractive Error Trial in Palo Alto, Draper (ELITA System)

    Not yet recruiting
    • Refractive Error
    • ELITA System
    • Palo Alto, California
    • +1 more
    Jan 25, 2023

    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

    Refractive Errors, Astigmatism Trial in Inglewood (Hand-held device supported by a mobile application, Phoropter, Autorefractor)

    Completed
    • Refractive Errors
    • Astigmatism
    • Hand-held device supported by a mobile application
    • +2 more
    • Inglewood, California
      United Medical Research Institute
    Feb 28, 2022

    Data on Johnson & Johnson Surgical Vision Products

    Enrolling by invitation
    • Refractive Error
    • +2 more
    • Intervention
    • Bakersfield, California
      Empire Eye and Laser Center
    Jan 23, 2023

    Presbyopia, Refractive Error, Near Vision Trial in Glendale (Aceclidine + Brimonidine, Aceclidine, Brimonidine)

    Recruiting
    • Presbyopia
    • +4 more
    • Aceclidine + Brimonidine
    • +2 more
    • Glendale, California
      Site #101
    Jan 10, 2023

    Refractive Error - Myopia Severe, Refractive Error - Myopia Simple Trial in Ireland, Singapore, United States (WaveLight®

    Completed
    • Refractive Error - Myopia Severe
    • Refractive Error - Myopia Simple
    • WaveLight® Ultraviolet Femtosecond (FS) Laser System
    • Laser Assisted Lenticular Extraction
    • Sioux Falls, South Dakota
    • +3 more
    Mar 30, 2022

    Refractive Error - Myopia Bilateral Trial in United States (Deseyne Daily Disposable Contact Lens (Test Device))

    Recruiting
    • Refractive Error - Myopia Bilateral
    • Deseyne Daily Disposable Contact Lens (Test Device)
    • Longwood, Florida
    • +4 more
    Jun 25, 2023

    Refractive Error Trial in Safdarjung Enclave, Singapore (Cheetah femtosecond laser and Cheetah patient interface, IntraLase iFS

    Recruiting
    • Refractive Error
    • Cheetah femtosecond laser and Cheetah patient interface
    • +2 more
    • Rajajinagar, Bangalore, India
    • +2 more
    Jan 23, 2023

    Correction of Anisometropic Amblyopia in Children.

    Recruiting
    • Amblyopia
    • +3 more
    • Axial length measurement in millimeter (mm) by optical biometry device
    • Autorefractometer to measure the refractive error in both eyes.
    • Banhā, Benha, Egypt
      Ahmed Abdelshafy Tabl
    Apr 5, 2022

    Refractive Error Trial in United States (iDesign Refractive Studio with STAR S4 IR® Excimer laser System)

    Recruiting
    • Refractive Error
    • iDesign Refractive Studio with STAR S4 IR® Excimer laser System
    • Los Angeles, California
    • +9 more
    Jan 23, 2023

    Hyperopia, Amblyopia, Anisohyperopia Trial in Coventry, Birmingham (Multifocal contact lenses, Single vision contact lenses)

    Completed
    • Hyperopia
    • +2 more
    • Multifocal contact lenses
    • Single vision contact lenses
    • Coventry, Walsgrave, United Kingdom
    • +1 more
    Feb 16, 2022

    Amblyopia, Healthy Trial (Vivid Vision Home, Refractive error correction)

    Not yet recruiting
    • Amblyopia
    • Healthy
    • Vivid Vision Home
    • Refractive error correction
    • (no location specified)
    Apr 4, 2022

    Refractive Accuracy of "2WIN" and Portable Autorefractors

    Completed
    • Refractive Error - Myopia Axial
    • +4 more
    • "2WIN" Photoscreener
    • +2 more
    • Anchorage, Alaska
      Alaska Children's EYE & Strabismus
    Jul 21, 2021

    Errors of Refraction Among Primary School Children

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

    Near Horizontal Heterophoria in Chinese Children

    Completed
    • Myopia, Progressive
    • axial length and refractive error
    • Tianjin, China
      Tianjin Eye Hospital
    Aug 11, 2021

    Refractive Error - Myopia Bilateral Trial in Atlanta, Westerville (Hioxifilcon A standard hydrogel contact lens with Hyaluronic

    Completed
    • Refractive Error - Myopia Bilateral
    • Hioxifilcon A standard hydrogel contact lens with Hyaluronic Acid (HA)
    • Atlanta, Georgia
    • +1 more
    Aug 9, 2021

    Refractive Error in Chinese University Students

    Completed
    • Refractive Error - Myopia Axial
    • myopia or not myopia
    • Shanghai, Shanghai, China
      Shanghai Guanghua Integrated Traditional Chinese and Western Med
    Dec 8, 2020

    Refractive Error - Myopia Bilateral Trial in Atlanta, Westerville, Brentwood (Hioxifilcon A standard hydrogel contact lens with

    Completed
    • Refractive Error - Myopia Bilateral
    • Hioxifilcon A standard hydrogel contact lens with Hyaluronic Acid (HA)
    • Atlanta, Georgia
    • +2 more
    Jul 21, 2021

    Stable Myopic Refractive Error, With or Without Astigmatism Trial in United States (STAR S4 IR laser with iDesign)

    Completed
    • Stable Myopic Refractive Error, With or Without Astigmatism
    • STAR S4 IR laser with iDesign
    • Camp Pendleton, California
    • +6 more
    Dec 7, 2021