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Refraction

Showing 26 - 50 of 1,029
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Strip Meniscometry in Dry Eye Evaluation

Completed
  • Dry Eye
  • Dry Eye Disease
  • Central visual acuity
  • +9 more
  • Olomouc, Czechia
    Department of Ophthalmology, University Hospital Olomouc
Nov 1, 2023

Pseudophakia, Hypermetropia, Myopia Trial in Pristina (FRESH CORNEAL MYOPIC LENTICULE IMPLANTATION)

Active, not recruiting
  • Pseudophakia
  • +2 more
  • FRESH CORNEAL MYOPIC LENTICULE IMPLANTATION
  • Pristina, Kosovo
    Eye Hospital Pristina
Sep 1, 2021

Comparison of Different Refraction Measurements in Adults

Recruiting
  • Vision Loss Night
  • Questionnaire
  • Eye examination
  • Brétigny-sur-Orge, France
    Institut de Recherche Biomédicale des Armées
Jul 6, 2021

Refractive Errors Trial in Pristina (ReLex Smile)

Enrolling by invitation
  • Refractive Errors
  • ReLex Smile
  • Pristina, Kosovo
    Eye Hospital Pristina
Aug 29, 2021

Refractive Errors, Accomodation, Diagnostic Self Evaluation Trial (EQ103)

Not yet recruiting
  • Refractive Errors
  • +2 more
  • EQ103
  • (no location specified)
Jul 6, 2021

Presbyopia Trial in Dhaka (Glasses to correct presbyopia)

Not yet recruiting
  • Presbyopia
  • Glasses to correct presbyopia
  • Dhaka, Bir Uttom A K Khandakar Road, Bangladesh
    James P. Grant School of Public Health BRAC University
Aug 19, 2022

Effect of Exogenous Growth Hormone on Ocular Findings

Recruiting
  • Precocious Puberty
  • +2 more
    • Isfahan, Iran, Islamic Republic of
    • +1 more
    Apr 15, 2022

    Near Horizontal Heterophoria in Chinese Children

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

    Accommodation Trial in Newark (Visual Stimuli)

    Completed
    • Accommodation
    • Visual Stimuli
    • Newark, California
      EyeQue
    Mar 23, 2021

    Visual Disorder Trial in Nancy (Visual acuity measurement)

    Terminated
    • Visual Disorder
    • Visual acuity measurement
    • Nancy, France
      Maternity Hospital CHRU
    Aug 9, 2021

    Cataract Senile Trial in Vienna (Auto and Subjective Refraction)

    Unknown status
    • Cataract Senile
    • Auto and Subjective Refraction
    • Vienna, Austria
      Hanusch Hospital, Department of Ophthalmology
    Oct 3, 2020

    Child, Only Trial in Marghita (Refraction measurement with auto-ref-keratometer Canon)

    Completed
    • Child, Only
    • Refraction measurement with auto-ref-keratometer Canon
    • Marghita, Bihor, Romania
      Holhoș Larisa Bianca
    Apr 1, 2021

    Myopia Trial in Guangzhou (group1, group2, group3)

    Completed
    • Myopia
    • group1
    • +3 more
    • Guangzhou, Guangdong, China
      Zhongshan Ophthalmic Center
    Mar 18, 2021

    Pseudophakia Trial in Vienna (Subjective refraction, Autorefraction, Wavefront aberrometry)

    Completed
    • Pseudophakia
    • Subjective refraction
    • +2 more
    • Vienna, Austria
      Vienna Institute for Research in Ocular Surgery (VIROS)
    Mar 20, 2020

    Correlation Between Refraction and Biometric Parameters

    Unknown status
    • Refractive Errors
      • Guangzhou, Guangdong, China
        Zhognshan Ophthalmic Center, Sun Yat-sen University
      Apr 10, 2020

      Enhanced Housing Photoscreeners 2WIN and GoCheckKids Compared in

      Completed
      • Amblyopia
      • Anisometropia
      • photoscreen
      • Anchorage, Alaska
        Alaska Children's EYE & Strabismus
      Oct 14, 2020

      Refractive Surgery Trial in Cairo (topography guided ablation, manifest refraction, full topography modified refraction)

      Completed
      • Refractive Surgery
      • topography guided ablation
      • +3 more
      • Cairo, Egypt
        Kasr Alainy
      Jan 26, 2020

      Refractive Error Trial in Chitrakoot, Madurai, Pune (School Model, Referral Model, Referral Model + Cost Recovery)

      Completed
      • Refractive Error
      • School Model
      • +2 more
      • Chitrakoot, India
      • +2 more
      Jul 20, 2020

      Keratoconus, Alteration of Visual Acuity Trial in Clermont-Ferrand (Cylinder, Dial, Slit)

      Completed
      • Keratoconus
      • Alteration of Visual Acuity
      • Cylinder
      • +2 more
      • Clermont-Ferrand, France
        Chu Clermont Ferrand
      Mar 19, 2020

      Refractive Errors, Astigmatism Trial (EyeQue VisionCheck, Phoropter)

      Not yet recruiting
      • Refractive Errors
      • Astigmatism
      • EyeQue VisionCheck
      • Phoropter
      • (no location specified)
      Sep 6, 2023

      Long Term Outcome of Intravitreal Ranibizumab for ROP

      Completed
      • Retinopathy of Prematurity
      • cycloplegic refraction
      • Mansoura, Dakahlia, Egypt
        Mansoura University
      Aug 28, 2020

      Mantle Lymphoma in Relapse/Refraction. Spanish Programme RRMCL

      Unknown status
      • Mantle Cell Lymphoma
      • Sevilla, Spain
        Hospital Universitario Virgen Macarena
      Feb 4, 2020

      Astigmatism Trial in Irvine (enVista® One-Piece Hydrophobic Acrylic Toric IOL, enVista control lens)

      Completed
      Has Results
      • Astigmatism
      • enVista® One-Piece Hydrophobic Acrylic Toric IOL
      • enVista control lens
      • Irvine, California
        Bausch & Lomb
      Aug 28, 2020

      Refraction Error, Myopia, Astigmatism Trial in Utrecht (Online Manifest Refraction)

      Unknown status
      • Refraction Error
      • +2 more
      • Online Manifest Refraction
      • Utrecht, Netherlands
        University Medical Center Utrecht
      Aug 30, 2019

      New Barrett TAL Formula With Argos Measurements: A Multicenter

      Recruiting
      • Cataract
      • Argos
      • Encino, California
      • +5 more
      Oct 10, 2023