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negative spherical aberration

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Cataract Trial in Cairo (phacoemulsification with intraocular lens implantation, ocular aberrometer assesment)

Recruiting
  • Cataract
  • phacoemulsification with intraocular lens implantation
  • ocular aberrometer assesment
  • Cairo, Egypt
    facultyof medicine, Cairo university
Jan 11, 2021

Myopia, Myopic Astigmatism, Presbyopia Trial in London (HiSMILE treatment option)

Not yet recruiting
  • Myopia
  • +2 more
  • HiSMILE treatment option
  • London, United Kingdom
    London Vision Clinic
Jan 4, 2023

FS-LASIK Surgery Effect on Higher Order Aberrations Trial in Cairo (LASIK refractive surgery)

Not yet recruiting
  • FS-LASIK Surgery Effect on Higher Order Aberrations
  • LASIK refractive surgery
  • Cairo, Egypt
    Kasr Al Ainy
Jul 14, 2021

Pseudophakia Trial in Houston (Visual Acuity, Biometric Data Collection, Patient Questionnaire)

Completed
  • Pseudophakia
  • Visual Acuity
  • +2 more
  • Houston, Texas
    Berkeley Eye Center
Nov 7, 2022

Cataract, Presbyopia Trial in Hershey (Extended Vision IOL, Neutral Aspheric Monofocal IOL)

Completed
  • Cataract
  • Presbyopia
  • Extended Vision IOL
  • Neutral Aspheric Monofocal IOL
  • Hershey, Pennsylvania
    Penn State Hershey Medical Center Eye Center
Jan 14, 2023

Contoura vs Wavefront Optimized Ablation

Not yet recruiting
  • Astigmatism
  • Laser assisted in-situ keratomileusis
  • Photorefractive keratectomy
  • (no location specified)
Apr 24, 2023

Optical Quality During the Peak of the Covid-19 Pandemic

Completed
  • Corneal Wavefront Aberration
  • SARS-CoV-2
    • Tianjin, Tianjin, China
      Tianjin Eye Hospital
    May 27, 2023

    Contact Lens Wearer Trial in Rochester (kalifilcon A Daily Disposable Toric LD213001 lens in SKUs +6D, +3D, 0D, -3D, -6D, and

    Completed
    • Contact Lens Wearer
    • kalifilcon A Daily Disposable Toric LD213001 lens in SKUs +6D, +3D, 0D, -3D, -6D, and -9D
    • Rochester, New York
      Bausch and Lomb Site 01
    Nov 10, 2021

    Evaluation of Cataract Surgery Outcome

    Recruiting
    • Cataract
    • High Myopia
      • Shanghai, Shanghai, China
        Eye and ENT Hospital of Fudan University
      Aug 18, 2021

      Loss of Visual Contrast Sensitivity, Near Vision, Visual Impairment Trial in Kuwait (phacoemulsification with implantation of

      Completed
      • Loss of Visual Contrast Sensitivity
      • +2 more
      • phacoemulsification with implantation of presbyopia correcting IOL
      • Kuwait, Kuwait
        Daralshifa hospital
      May 25, 2021

      Myopia Trial in Tianjin (Orthokeratology with aspheric wide inversion zone design in the optical zone, Orthokeratology with

      Completed
      • Myopia
      • Orthokeratology with aspheric wide inversion zone design in the optical zone
      • Orthokeratology with traditional spherical design in the optical zone
      • Tianjin, China
        Tianjin Eye Hospital
      Jul 14, 2023

      Keratomileusis, Laser In Situ, Contrast Sensitivity Trial in Taipei (Topoguided LASIK, Wavefront optimized LASIK)

      Completed
      • Keratomileusis, Laser In Situ
      • Contrast Sensitivity
      • Topoguided LASIK
      • Wavefront optimized LASIK
      • Taipei, Taiwan
        Taipei Nobel Eye Clinic
      Jun 3, 2021

      Visual Quality Trial in Guangdong

      Recruiting
      • Visual Quality
        • Guangdong, Guangzhou, China
          First Affiliated Hospital of Jinan University
        Jun 16, 2021

        Central and Peripheral Wavefront Aberration Profile in Pediatric

        Not yet recruiting
        • Myopia
        • Intervention
        • Houston, Texas
          University of Houston College of Optometry - J. Armistead Bldg R
        Oct 9, 2023

        Coronary Artery Disease Trial in Shenyang (Spherical tip noncompliant balloon, Regular noncompliant balloon)

        Recruiting
        • Coronary Artery Disease
        • Spherical tip noncompliant balloon
        • Regular noncompliant balloon
        • Shenyang, Liaoning, China
          First Hospital of China Medical University
        May 4, 2023

        Pseudophakia Trial in Houston (Visual Acuity, Defocus Curve, Intraocular Lens Satisfaction (IOLSAT) Questionnaire)

        Recruiting
        • Pseudophakia
        • Visual Acuity
        • +5 more
        • Houston, Texas
          Berkeley Eye Center
        Sep 26, 2023

        Myopia, Hyperopia Trial in Waterloo (Lens A (fanfilcon A), Lens B (lotrafilcon B))

        Not yet recruiting
        • Myopia
        • Hyperopia
        • Lens A (fanfilcon A)
        • Lens B (lotrafilcon B)
        • Waterloo, Ontario, Canada
          Insight Eye Care
        Oct 19, 2023

        Orthokeratology Lens naïve Trial (orthokeratology lens)

        Not yet recruiting
        • Orthokeratology Lens naïve
        • orthokeratology lens
        • (no location specified)
        Aug 2, 2023

        Refractive Errors Trial in United States (Delefilcon A contact lenses)

        Not yet recruiting
        • Refractive Errors
        • Delefilcon A contact lenses
        • Eden Prairie, Minnesota
        • +3 more
        Sep 13, 2023

        Corneal High Order Aberrations After Stream Light and Mechanical

        Recruiting
        • Compare Corneal High Order Aberrations Before and After Stream Light Trans-PRK and Mechanical Photorefractive Keratectomy
        • Photorefractive keratectomy
        • Assiut, Assiut University, Egypt
          Assiut university faculty of medicine
        Oct 26, 2023

        Intraocular Lens Centration and Tilt on Visual Performance With

        Not yet recruiting
        • Cataract
        • Lenses, Intraocular
        • No intervention
        • Jacksonville, Florida
          East Coast Institute for Research
        Apr 24, 2023

        Myopia, Hyperopia Trial in Madrid (Soft Spherical Hydrogel Contact Lens A, Soft Spherical Silicone Hydrogel Contact Lens B)

        Completed
        • Myopia
        • Hyperopia
        • Soft Spherical Hydrogel Contact Lens A
        • Soft Spherical Silicone Hydrogel Contact Lens B
        • Madrid, Spain
          University Complutense of Madrid
        Dec 16, 2022

        Clinical Utility of Oncomine Precision Assay Within Exactis

        Recruiting
        • NSCLC
          • Moncton, New Brunswick, Canada
          • +6 more
          Dec 9, 2022

          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

          Binocular Visual Acuity and Refractive Stability in Alcon

          Completed
          • Cataract
          • Clareon
          • Gainesville, Georgia
            Gainesville Eye Associates
          Sep 15, 2022