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Refraction

Showing 51 - 75 of 1,029
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Myopia, Myopia Progression, Juvenile Myopia Trial in United States (Spectacle Lenses)

Not yet recruiting
  • Myopia
  • +2 more
  • Spectacle Lenses
  • Whittier, California
  • +8 more
May 30, 2023

Aphakia, Presbyopia Trial in San Salvador, Panamá (Alcon Fluid Accommodating Intraocular Lens, Top Con Autorefractor)

Active, not recruiting
  • Aphakia
  • Presbyopia
  • Alcon Fluid Accommodating Intraocular Lens
  • Top Con Autorefractor
  • San Salvador, El Salvador
  • +1 more
Jul 18, 2022

Low-cost Handheld Autorefractors -Practical Approach to

Completed
Has Results
  • Myopia
  • Hyperopia
  • Vision device validation
  • (no location specified)
Feb 11, 2020

Cycloplegia Trial in Damieta (Cycloplegics)

Completed
  • Cycloplegia
  • Damieta, New Damietta, Egypt
    Ehab tharwat
Oct 14, 2022

Myopia, Hyperopia, Astigmatism Trial in Bloomington (Vision R-800 Phoropter, Standard Phoropter)

Completed
Has Results
  • Myopia
  • +3 more
  • Vision R-800 Phoropter
  • Standard Phoropter
  • Bloomington, Indiana
    Indiana University Clinical Optics Research Lab
Feb 16, 2022

Refractive SE Following Implantation of LS313 MF30 IOL

Completed
Has Results
  • Refractive Errors
  • Measurements of the postoperative refraction
  • Neubrandenburg, Mecklenburg/Vorpommern, Germany
    Dietrich-Bonhoeffer-Klinikum
Aug 26, 2019

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

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

Mini-Monovision BetweenMonofocal andAdjustable Intraocular Lens

Not yet recruiting
  • Cataract
  • Clareon Monofocal
  • Light-Adjustable Lens
  • Gainesville, Georgia
    Gainesville Eye Associates
Nov 3, 2023

Trigonocephaly Craniofacial Surgery in

Recruiting
  • Metopic Synostosis
  • craniofacial surgery
  • Rotterdam, Netherlands
    Erasmus MC
Oct 2, 2023

Amblyopia Trial in Hangzhou (visual function training software, occlusion therapy, corrective glasses)

Recruiting
  • Amblyopia
  • visual function training software
  • +2 more
  • Hangzhou, Zhejiang, China
    The Second Affiliated Hospital of Zhejiang University School of
Feb 16, 2023

Visual Impairment Trial in Lahore (Conventional treatment of isometric hand grip training exercises, Conventional treatment

Recruiting
  • Visual Impairment
  • Conventional treatment of isometric hand grip training exercises
  • Conventional treatment along with power ball training
  • Lahore, Punjab, Pakistan
    Rising Sun Institute for Special Children
Aug 3, 2023

" Visual Characterization of Parkinson's Patients and Oculomotor

Not yet recruiting
  • Parkinson Disease
  • Clinical measurements
  • Oculomotor or perceptual therapy
  • (no location specified)
Sep 13, 2023

Myopia Trial in San Francisco (Low-level Red Light Therapy Device)

Active, not recruiting
  • Myopia
  • Low-level Red Light Therapy Device
  • San Francisco, California
    University of California, San Francisco
Nov 2, 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

Cataract, Lens Opacities, Presbyopia Trial in Germany (POD F GF (BVI Medical), POD F (BVI Medical), Panoptix (Alcon Inc) IOL

Completed
  • Cataract
  • +2 more
  • POD F GF (BVI Medical), POD F (BVI Medical), Panoptix (Alcon Inc) IOL implantation
  • Ahaus, Germany
  • +3 more
Jan 7, 2022

Cataract Trial in Denmark, Germany, Ireland (AT LARA IOL, AT LISA Tri IOL)

Completed
  • Cataract
  • AT LARA IOL
  • AT LISA Tri IOL
  • Hellerup, Denmark
  • +3 more
Jul 13, 2022

Myopia Trial in Australia, United States (Vivior)

Not yet recruiting
  • Myopia
  • Vivior
  • Berkeley, California
  • +4 more
Nov 3, 2023

Myopia Trial in Damietta (Implantable Collamer Lens (ICL), Implantable Intraocular Lens (IPCL))

Completed
  • Myopia
  • Implantable Collamer Lens (ICL)
  • Implantable Intraocular Lens (IPCL)
  • Damietta, Egypt
    Akram Fekry Elgazzar
Sep 22, 2023

Mini 4 Ready Intraocular Lens

Not yet recruiting
  • Cataract
  • monofocal intraocular lens
  • (no location specified)
Oct 20, 2023

Emmetropization, Myopia, Hyperopia Trial (DEFOG glasses(peripheral focus-out glasses))

Not yet recruiting
  • Emmetropization
  • +2 more
  • DEFOG glasses(peripheral focus-out glasses)
  • (no location specified)
Jan 10, 2023

Myopia Trial in Hung Hom (DIMS spectacle lens)

Not yet recruiting
  • Myopia
  • DIMS spectacle lens
  • Hung Hom, Hong Kong
    School of Optometry, The Hong Kong Polytechnic University
May 24, 2023

A Real-World Evidence Long-Term Follow-Up Study to Assess

Not yet recruiting
  • Aphakia
  • AcrySof single-piece IOL
  • AcrySof multi-piece IOL
  • (no location specified)
Mar 23, 2023

Eyelid Diseases, Ptosis, Eyelid Trial in Taipei (levator muscle resection surgery, Müller's muscle-conjuctival resection

Recruiting
  • Eyelid Diseases
  • Ptosis, Eyelid
  • levator muscle resection surgery
  • +2 more
  • Taipei, Taiwan
    National Taiwan University Hospital
Feb 20, 2023

Performance of 690AD and 690ADY Monofocal Intraocular Lens

Not yet recruiting
  • Cataract
  • +3 more
  • Standard of care
  • Patient satisfaction questionnare
  • Nyíregyháza, Hungary
  • +1 more
Feb 20, 2023

Myopia Trial in Hung Hom (Variant of Defocus Incorporated Spectacle lens (DG2))

Not yet recruiting
  • Myopia
  • Variant of Defocus Incorporated Spectacle lens (DG2)
  • Hung Hom, Hong Kong
    School of Optometry, The Hong Kong Polytechnic University
May 24, 2023