135 studies found for:    ASTIGMATISM
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Rank Status Study
21 Completed
Has Results
Assessment of Visual Performance in Patients With Low Levels of Astigmatism
Conditions: Cataract Extraction;   Corneal Astigmatism
Intervention: Other: Visual performance measures
22 Completed Corneal Epithelial and Stromal Thickness Distribution in Keratoconus
Conditions: Keratoconus;   Astigmatism
23 Completed Surgically Induced Astigmatism of Temporal Versus Nasal Clear Corneal Phacoemulsification
Condition: Surrgical Induced Astigmatism
Intervention: Procedure: phacoemulsification and intraocular lens implantation
24 Unknown  Study to Evaluate the Clinical Performance of SynergEyes A2 Hybrid Contact Lenses
Conditions: Refractive Errors;   Astigmatism
Intervention: Device: SynergEyes A2 Hybrid Contact Lens
25 Completed
Has Results
Evaluation of Two Daily Disposable Contact Lenses for Wearers With Astigmatism
Conditions: Astigmatism;   Myopia
Interventions: Device: Nelfilcon A investigational contact lens;   Device: Nelfilcon A commercial contact lens
26 Completed
Has Results
Clinical Performance of Atypical Contact Lens Powers on Subjects With Astigmatism
Condition: Astigmatism
Interventions: Device: senofilcon A toric;   Device: galyfilcon A toric
27 Completed Safety and Effectiveness of the Akreos Toric Intraocular Lens.
Conditions: Cataract;   Astigmatism
Interventions: Device: Akreos Toric IOL;   Device: Akreos Advanced Optics Aspheric Intraocular Lens (Akreos AO)
28 Completed A Study to Investigate the Safety and Effectiveness of Aspheric Laser Refractive Surgery Treatments for Myopia
Conditions: Myopia;   Astigmatism
Interventions: Device: The Bausch & Lomb Zyoptix Tissue Saving Aspheric algorithm;   Device: The Bausch & Lomb Zyoptix Tissue Saving algorithm
29 Completed
Has Results
Toric Intraocular Lens Following Cataract Surgery
Conditions: Cataract;   Astigmatism
Interventions: Device: Toric Accommodating Lens;   Device: Accommodating Lens
30 Completed Visual Performance Investigation of Two Toric Soft Contact Lenses
Conditions: Refractive Error;   Astigmatism;   Myopia;   Hyperopia
Interventions: Device: Lotrafilcon B toric contact lens;   Device: Comfilcon A toric contact lens
31 Not yet recruiting A Trial of Toric Versus Non-toric Intraocular Lenses in Phacoemulsification Cataract Surgery
Conditions: Cataract;   Astigmatism
Intervention: Device: Phacoemulsfication cataract surgery and intra-ocular lens implant
32 Completed
Has Results
Evaluation of Orientation and Visual Acuity of Four Toric Soft Contact Lenses When Head is Tilted at 90 Degrees
Condition: Astigmatism
Interventions: Device: senofilcon A;   Device: balafilcon A toric;   Device: lotrafilcon B toric;   Device: omafilcon A
33 Completed
Has Results
Prospective Study of an Investigational Toric Soft Contact Lens
Conditions: Myopia;   Astigmatism;   Refractive Error
Interventions: Device: Nelfilcon A toric contact lenses (with comfort additives);   Device: Nelfilcon A toric contact lenses
34 Active, not recruiting A Comparison of Fellow Eyes Undergoing LASIK or PRK With a Wavefront-guided Excimer Laser Versus a Wavefront-optimized Excimer Laser
Conditions: Hyperopia;   Myopia;   Astigmatism
Intervention: Procedure: LASIK and PRK
35 Completed
Has Results
Evaluation of Two Toric Soft Contact Lenses After Two Weeks of Wear
Condition: Astigmatism
Interventions: Device: senofilcon A toric;   Device: alphafilcon A toric
36 Completed
Has Results
In-office Evaluation of Two Toric Soft Contact Lenses and a Spherical Soft Contact Lens
Condition: Astigmatism
Interventions: Device: senofilcon A toric contact lens;   Device: alphafilcon A toric;   Device: etafilcon A sphere
37 Completed
Has Results
Effect of Eye Movement on Toric Lens Orientation and Visual Acuity
Condition: Astigmatism
Interventions: Device: senofilcon A;   Device: balafilcon A;   Device: omafilcon A;   Device: lotrafilcon B
38 Completed A Comparison of Corneal Aberrations in Subjects With Contralateral AcrySof IQ Toric Intraocular Lens (IOL) and AcrySof IQ IOL With Limbal Relaxing Incision (LRI)
Conditions: Cataract;   Astigmatism
Interventions: Device: AcrySof IQ Toric IOL;   Device: AcrySof IQ Aspheric IOL;   Procedure: Limbal Relaxing Incision (LRI)
39 Recruiting Wavefront-guided PRK vs Wavefront-optimized PRK
Conditions: Myopia;   Astigmatism
Interventions: Procedure: Wavefront-guided PRK;   Procedure: Wavefront-optimized PRK
40 Completed
Has Results
Contralateral Comparison of Three Excimer Laser Systems in Performing LASIK
Conditions: Myopia;   Astigmatism
Interventions: Device: Excimer Laser;   Device: AMO/VISX CustomVue™;   Device: LADARVision 4000 excimer laser

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Indicates status has not been verified in more than two years