78 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
21 Recruiting Evaluation of the FluidVisionTM AIOL With an Improved Injector
Condition: Presbyopia
Intervention: Device: FluidVisionTM accommodating intraocular lens
22 Recruiting Rotational Stability After Nanoflex Collamer Toric Intraocular Lens Implantation in Astigmatic Patients
Condition: Astigmatism
Interventions: Procedure: Phacoemulsification with toric Nanoflex IOL implantation;   Device: NanoFlex toric Intraocular Lens
23 Not yet recruiting Bilateral Dispensing Clinical Trial of Stenfilcon A Against Etafilcon A for Astigmatism
Condition: Astigmatism
Interventions: Device: stenfilcon A;   Device: etafilcon A
24 Not yet recruiting Clinical Trial With PRECIZON Presbyopic
Conditions: Cataract;   Presbyopia
Intervention: Device: PRECIZON Presbyopic
25 Recruiting DAILIES® AquaComfort Plus® MF - Comparative Assessment of Visual Performance-PART 2
Condition: Presbyopia
Interventions: Device: Nelfilcon A Contact Lenses;   Device: Omafilcon A Contact Lenses
26 Not yet recruiting Rayner Toric IOL Rotational Stability
Conditions: Cataract;   Corneal Astigmatism
Interventions: Procedure: Cataract surgery;   Device: Rayner T-flex Toric IOLs
27 Recruiting A Clinical Trial of The VisAbility Implant System Presbyopic Patients
Condition: Presbyopia
Intervention: Device: VisAbility Implant Model SGP-046
28 Not yet recruiting VERION Versus Conventional, Manual Ink-marking in Toric IOL Implantation
Condition: Astigmatism
Interventions: Device: VERION for toric IOL alignment;   Procedure: Conventional, manual ink-marking for toric IOL alignment
29 Recruiting Combined 25-gauge Vitrectomy and Cataract Surgery With Toric Intraocular Lens With Idiopathic Epiretinal Membrane.
Conditions: Cataract;   Epiretinal Membrane;   Corneal Astigmatism
Interventions: Device: Vitrectomy with cataract surgery and toric IOL;   Device: Vitrectomy with cataract surgery and common IOL
30 Recruiting Clinical Trial of the Femtosecond Laser System VisuMax for Refractive Correction of Hyperopia by Means of Lenticule Extraction
Condition: Hyperopia
Interventions: Procedure: Small incision lenticule extraction;   Device: ReLEx®  (SMILE)
31 Recruiting Development of a Validated Chart for Intermediate Vision Assessment
Conditions: Myopia;   Hyperopia;   Presbyopia;   Astigmatism
Intervention: Other: Intermediate Visual acuity (IVA) assessment
32 Recruiting Clinical Performance of Habitual Wearers of Avaira Toric When Refitted With Clariti Toric Lenses
Condition: Astigmatism
Interventions: Device: somofilcon A;   Device: enfilcon A
33 Recruiting Dichoptic Virtual Reality Therapy for Amblyopia in Adults
Conditions: Amblyopia;   Anisometropia;   Strabismus
Interventions: Device: Dichoptic therapy;   Other: Patching therapy;   Device: Dioptic (non-dichoptic) therapy
34 Recruiting Myopia Control With the Multi-segment Lens
Condition: Myopia
Intervention: Device: Multiple-Segment spectacle lens
35 Recruiting Effect of Orthokeratology Versus Spectacles on Myopia Progression in Chinese Children: A Crossover Trial
Condition: Myopia
Interventions: Device: Orthokeratology;   Device: Spectacle
36 Recruiting Contact Lenses and Myopia
Condition: Myopia
Intervention: Device: Contact lenses
37 Recruiting Prospective Evaluation of the Long-term Effectiveness of the Femtosecond Laser-assisted Arcuate Incisions
Condition: Astigmatism
Intervention:
38 Recruiting Quality of Vision and Quality of Life With LASIK
Conditions: Myopia;   Astigmatism;   Quality of Lifte
Intervention: Other: Patient Quality of Life andVision after LASIK Surgery
39 Recruiting Diurnal Changes of the Cornea - a Pilot Study
Condition: Astigmatism
Intervention:
40 Recruiting Impact of a Corneal Pre-cut on Wound Architecture and Astigmatism in Cataract Surgery - a Pilot Study
Condition: Cataract
Interventions: Procedure: Corneal precut 600µm;   Procedure: Corneal stabincision

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Indicates status has not been verified in more than two years