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24 studies found for:    Open Studies | "Astigmatism"
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Rank Status Study
1 Recruiting Evaluating and Improving Functional Driving Vision of Patients With Astigmatism: Phase 3
Condition: Astigmatism
Interventions: Device: Placebo Lenses;   Device: Spherical Lenses;   Device: Toric Lenses
2 Recruiting Prospective Evaluation of the Long-term Effectiveness of the Femtosecond Laser-assisted Arcuate Incisions
Condition: Astigmatism
Intervention:
3 Not yet recruiting Influence of Trabeculectomy and Phaco-trabeculectomy on Corneal Astigmatism
Conditions: Astigmatism;   Glaucoma
Interventions: Device: Biometry;   Device: Refraction;   Device: Corneal Topography
4 Recruiting Pseudophakic Astigmatic Reduction With Verion-LenSx Arcuate Incisions
Condition: Astigmatism
Intervention: Procedure: Verion-LenSx
5 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
6 Recruiting Corneal Power, Astigmatism, and Aberration Changes After LASIK
Condition: Measurements of Patients Using OCT Before and After LASIK
Intervention:
7 Recruiting Clinical Evaluation of Efficacy and Stability of AT TORBI 709M 4-haptic Toric IOL in Cataract Surgery
Conditions: Iol;   Astigmatism
Intervention: Procedure: AT TORBI 709M
8 Recruiting A Comparison of LASIK Outcomes Using Two Femtosecond Lasers
Conditions: Myopia;   Astigmatism
Interventions: Device: Intralase IFS150;   Device: Visumax
9 Not yet recruiting Comparison of Topography Guided LASIK With WaveLight® EX500 to SMILE With Zeiss VisuMax
Conditions: Myopia;   Astigmatism
Interventions: Procedure: Topography Guided LASIK;   Procedure: Small Incision Lenticular Extraction;   Device: WaveLight EX500 Excimer Laser System;   Device: VisuMax Surgical Laser
10 Recruiting Comparison Between FS- LASIK and FS-SMILE for Correction of Myopia and Myopic Astigmatism
Condition: Myopia
Interventions: Procedure: FS-SMILE;   Procedure: FS- LASIK;   Device: Visumax device;   Device: FS 200 device
11 Recruiting Prospective S&E Study of Wavefront-guided PRK for Myopia With iDesign Advanced Wavescan Studio™ System and Star S4 IR™
Condition: Stable Myopic Refractive Error, With or Without Astigmatism
Intervention: Device: STAR S4 IR laser with iDesign
12 Recruiting High Resolution Wavefront-guided vs. Wavefront Optimized LASIK
Conditions: Nearsightedness;   Astigmatism
Intervention: Procedure: LASIK
13 Recruiting Post-Approval Study of the TECNIS® Toric Extended Cylinder Range Intraocular Lens (IOL)
Conditions: Cataract;   Astigmatism
Intervention: Device: TECNIS Toric Models ZCT450, ZCT525 or ZCT600
14 Recruiting Conventional Surgery vs. Verion/VerifEye
Conditions: Cataract;   Astigmatism
Interventions: Device: Conventional;   Device: Verion
15 Not yet recruiting Rayner Toric IOL Rotational Stability
Conditions: Cataract;   Corneal Astigmatism
Interventions: Procedure: Cataract surgery;   Device: Rayner T-flex Toric IOLs
16 Recruiting Randomized, Non-inferiority Trial Comparing SMILE and LASIK
Conditions: Myopia;   Astigmatism;   Hypermetropia
Interventions: Procedure: Femtosecond LASIK;   Procedure: Small incision lenticule extraction (SMILE)
17 Recruiting Evaluating the Effect of Laser Vision Surgery, Phakic Intraocular Lens Implantation, Cataract Surgery, and Pupil Dilation on the Iris Recognition Scanner Function of Smartphone
Conditions: Cataract;   Myopia;   Myopic Astigmatism
Intervention: Device: iris recognition scanner
18 Recruiting Changes of Visual Function, Ocular Surface Structures and Physiology After Long-Termed Contact Lens Wear
Conditions: Ocular Surface Disease;   Keratoconus;   Irregular Astigmatism
Interventions: Device: corneal lenses;   Device: large diameter lenses
19 Recruiting An Evaluation of LASIK and PRK Surgery in Physicians
Conditions: Nearsightedness;   Farsightedness;   Astigmatism
Intervention: Behavioral: Questionnaire (QoV questionnaire)
20 Recruiting Advanced Surface Ablation (ASA) vs Laser-Assisted In Situ Keratomileusis (LASIK)
Conditions: Nearsightedness;   Farsightedness;   Astigmatism
Intervention:

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Study has passed its completion date and status has not been verified in more than two years.