82 studies found for:    Open Studies | "Refractive Errors"
Show Display Options
Rank Status Study
21 Unknown  Visual and Economic Profits of ReSTOR® Multifocal Intraocular Lenses (IOL) on Public Health Patients in Spain
Condition: Presbyopia
Intervention: Procedure: Cataract surgery
22 Unknown  Randomized, Non-inferiority Trial Comparing SMILE and LASIK
Conditions: Myopia;   Astigmatism;   Hypermetropia
Interventions: Procedure: Femtosecond LASIK;   Procedure: Small incision lenticule extraction (SMILE)
23 Recruiting Multifocal Lens Centration and Its Effect on Visual Performance in a Presbyopic Population
Condition: Presbyopia
Interventions: Device: Acuvue Oasys for Presbyopia;   Device: PureVision2 for Presbyopia;   Device: Biofinity Multifocal
24 Recruiting Neurovascular Coupling in Subjects With Amblyopia
Conditions: Amblyopia ex Strabismus;   Amblyopia ex Anisometropia
Interventions: Device: Dynamic Vessel Analyzer;   Other: Laser Doppler Velocimetry;   Device: 7-Tesla MRI;   Other: Pattern electroretinography
25 Not yet recruiting A Prospective Safety and Effectiveness Study of a New High Repetition Rate Excimer Laser Using LASIK for the Correction of Ammetropia and Presbyopia
Conditions: Myopia;   Hyperopia;   Presbyopia
Interventions: Procedure: Proscan;   Procedure: Zyoptix;   Procedure: Supracor
26 Recruiting Contact Lenses and Myopia
Condition: Myopia
Intervention: Device: Contact lenses
27 Recruiting Performance of a Multifocal Contact Lens - Presbyopia Study
Condition: Presbyopia
Intervention: Device: 1-Day ACUVUE® MOIST® MULTIFOCAL
28 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)
29 Recruiting A Prospective Safety and Effectiveness Study of the 500 Hz Technolas Perfect Vision Excimer Laser Using LASIK
Conditions: Myopia;   Hyperopia
Intervention: Device: Proscan
30 Recruiting Clinical and Genetic Studies in Families With Myopia and Related Diseases
Condition: Myopia
Intervention:
31 Recruiting Correction of Myopia Wtih or Without Astigmatism Using the VisuMax™ Femtosecond Laser
Conditions: Myopia;   Astigmatism
Intervention: Device: Carl Zeiss Meditec VisuMax Femtosecond Laser
32 Not yet recruiting Bilateral Dispensing Clinical Trial of Stenfilcon A Against Etafilcon A for Astigmatism
Condition: Astigmatism
Interventions: Device: stenfilcon A;   Device: etafilcon A
33 Recruiting Corneal Power, Astigmatism, and Aberration Changes After LASIK
Condition: Measurements of Patients Using OCT Before and After LASIK
Intervention:
34 Not yet recruiting Clinical Trial With PRECIZON Presbyopic
Conditions: Cataract;   Presbyopia
Intervention: Device: PRECIZON Presbyopic
35 Recruiting A Clinical Trial of The VisAbility Implant System Presbyopic Patients
Condition: Presbyopia
Intervention: Device: VisAbility Implant Model SGP-046
36 Recruiting Evaluation of the FluidVisionTM AIOL With an Improved Injector
Condition: Presbyopia
Intervention: Device: FluidVisionTM accommodating intraocular lens
37 Not yet recruiting Refraction Determination Analysis
Conditions: Myopia,;   Hyperopia,;   Astigmatism,;   Presbyopia,;   Eye Strain,
Interventions: Device: Telemedicine refraction;   Device: Traditional refraction
38 Unknown  Ocular Imaging With Spectral Domain Optical Coherence Tomography
Conditions: Healthy;   Myopia;   Hypermetropia
Intervention: Device: Spectral domain-OCT (Cirrus™ HD-OCT, Carl Zeiss Meditec AG)
39 Unknown  Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia
Conditions: Astigmatism;   Cataract
Interventions: Procedure: phacoemulsification;   Device: Pentacam (Oculus,Germany)examination
40 Unknown  Intrastromal Correction of Ametropia by a Femtosecond Laser
Conditions: Presbyopia;   Myopia;   Hyperopia;   Astigmatism
Interventions: Device: Intrastromal Correction of Presbyopia;   Device: Intrastromal correction of Myopia;   Device: Intrastromal Correction of Hyperopia;   Device: Intrastromal Correction of Myopia incl. Astigmatism;   Device: Intrastromal Correction of Hyperopia incl. Astigmatism

First Page    Show previous page of results Previous Page (1-20) Studies Shown (21-40) Next Page (41-60) Show next page of results    Last Page
Indicates status has not been verified in more than two years