Astigmatism: all 420 studies
Page 3 of 5. Open to participants first (54), then studies with results posted, then the rest; newest registration first within each.
- Evaluation of Orientation and Visual Acuity of Four Toric Soft Contact Lenses When Head is Tilted at 90 DegreesCompletedNCT00583908Not applicableResults posted
- A Study to Evaluate the Safety and Effectiveness of the Technols 217z Zyoptix System for HyperopiaCompletedNCT00348205Not applicableResults posted
- Wavelight Plus Sightmap-LASIK vs. Wavefront-Optimized-LASIKActive, not recruitingNCT07855094Not applicable
- Rotational Stability of Two Soft Toric Contact Lens DesignsCompletedNCT07795671Not applicable
- Influence of Implantation Technique on Rotational Stability of a Frosted-Haptic Toric Intraocular Lens: A Prospective Contralateral-Eye StudyActive, not recruitingNCT07768722Not applicable
- Preoperative and Postoperative Refractive and Topographic Evaluation in Patients With Primary Pterygium: Comparison of Two Surgical TechniquesCompletedNCT07742995
- Optimization for Toric Contact LensesCompletedNCT07557030Not applicable
- Assessment of IOP After Corneal Refractive Surgery Based on AIActive, not recruitingNCT07544615
- FS-LASIK Versus TransPRK for Mixed AstigmatismCompletedNCT07481227
- Machine Learning Prediction of 1-Year Refractive Error After SMILECompletedNCT07478419
- A Clinical Evaluation of a Phakic Intraocular LensCompletedNCT07291739Not applicable
- Comfort and Vision With TOTAL30 Multifocal LensesCompletedNCT07284966
- Refractive Accuracy of Toric Intraocular Lens Implantation Using Digital Marking Compared to Conventional MarkingCompletedNCT07176897
- LASIK Using Contoura With Phorcides vs. iDesignActive, not recruitingNCT07128316Not applicable
- LASIK iDesign vs SMILEActive, not recruitingNCT07126756Not applicable
- Toric Intraocular Lens Implantation for Pediatric AphakiaCompletedNCT07088796Not applicable
- Patient Reported Outcomes With WaveLight Plus LASIKCompletedNCT07084844
- The Effect of the Changes in Cylinder Power and Axis of Toric Soft Contact Lenses on the Visual Quality, Satisfaction and Vision Acceptability in Astigmatic SubjectsCompletedNCT06937489Not applicable
- Short-term Study of Two Soft Contact Lenses in Wearers With Low AstigmatismCompletedNCT06873048Not applicable
- A Prospective Clinical Study to Evaluate the Repeatability of the Visibly Vision TestCompletedNCT06812572Not applicable
- Predicting Manifest Astigmatism in Keratoconus Patients.Active, not recruitingNCT06798779
- Revive Toric RWE StudyWithdrawnNCT06785194
- Optical Quality of the Cornea in OrthokeratologyCompletedNCT06775509Not applicable
- ICL and LASIK for Hyperopic AstigmatismCompletedNCT06742541Early Phase 1
- Evaluation of Corneal Irregular Astigmatism and Visual Quality Following Bilateral Sequential Small Incision Lenticule Extraction (SMILE) and Laser Subepithelial Keratomileusis (LASEK): A Six-Year Comparative StudyCompletedNCT06673992
- Evaluation of Toric Intraocular Lens(IOL) Combined With Capsular Tension Ring(CTR) in Patients With Cataract Combined With High MyopiaActive, not recruitingNCT06571773
- DAILIES TOTAL1® Soft Contact Lenses - Post-Market Clinical Follow-up StudyTerminatedNCT06483113
- KLEx Versus FS-LASIK for the Treatment of Myopia and Compound Myopic AstigmatismActive, not recruitingNCT06477081Not applicable
- Post-market Clinical Follow-up Study of Alcon PRECISION1™ Spherical and PRECISION1™ for Astigmatism Soft Contact LensesTerminatedNCT06462456
- Post-market Clinical Follow-up Study of Alcon TOTAL30® Contact Lenses (Lehfilcon A)TerminatedNCT06408649
- Toric Intraocular Lens Implantation in Pediatric CataractCompletedNCT06294795Not applicable
- Clareon Toric Study (T2-T9)CompletedNCT06285695Not applicable
- Multifocal-toric IOL Compared to Multifocal IOL Combined With Limbal Relaxing Incisions for Correction of Moderate Astigmatism During Cataract SurgeryCompletedNCT06277349Not applicable
- T30 for Astigmatism in Digital Device UsersCompletedNCT06266728Not applicable
- Evaluation of the Safety and Efficacy of Rigid Breathable Scleral Contact Lenses for the Correction of AmetropiaStatus unknownNCT06256770
- Observational Prospective Clinical Investigation on Monofocal Toric Intraocular LensCompletedNCT06250855
- Limbal Astigmatic Keratotomy to Correct High Degrees of Astigmatism After PhacoemulsificationCompletedNCT06179355Not applicable
- Total30 for Astigmatism Contact LensesCompletedNCT06052046Not applicable
- Comparison of Contoura Vision Outcomes Programmed Using the Manifest Refraction Verses Using Phorcides Planning Software in Patients With Oblique AstigmatismTerminatedNCT05888337
- SMILE vs. LASIK Using Contoura With PhorcidesCompletedNCT05844397Not applicable
- Contoura vs Wavefront Optimized AblationStatus unknownNCT05829980
- Clinical Comparison of Toric Contact Lenses Fit CharacteristicsWithdrawnNCT05805345Not applicable
- Clareon IOL Retrospective Data CollectionCompletedNCT05796674
- Post Market Clinical Follow-up (PMCF) Study of Clareon Vivity & Clareon PanOptixCompletedNCT05796453Not applicable
- Accuracy of Topography Guided Automatic Marking of the Intraocular Lens (IOL) -AxisCompletedNCT05750862Not applicable
- Post-approval Study of New Enrolment Patients Undergoing Bilateral Treatment With the VisuMax SMILE ProcedureCompletedNCT05740293
- Evaluation of Visual Acuity of the Envista One-piece Acrylic Toric IOL MX60ETCompletedNCT05739656
- Contralateral Study of Topography Guided LASIK Versus Small Incision Lenticule ExtractionActive, not recruitingNCT05611294Not applicable
- Association Between ORA and Residual Refractive Astigmatism After SMILECompletedNCT05604872
- Limbal Relaxing Incisions Versus Paired 4 mm Clear Corneal Incisions on Steep Meridian During PhacoemulsificationStatus unknownNCT05593263Not applicable
- Clinical Investigation of a Small Aperture Extended Depth of Focus Intraocular Lens in Patients With Complex CorneasCompletedNCT05574270Not applicable
- Astigmatism Management With Iris-registration Guided Corneal Relaxing Incisions or Toric IOLs During Cataract SurgeryStatus unknownNCT05561296Not applicable
- Evaluation of the Impact of Corneal Width on Surgically Induced Astigmatism (SIA) and Functional Results After Bimanual 1.4 mm Microincision Cataract Surgery (B-MICS), Coaxial 1.8 mm MICS (C-MICS) and 2.4 mm Small Incision Cataract Surgery (C-SICS).CompletedNCT05510869Not applicable
- Comparison of Aspheric Toric Intraocular Lenses for Micro-monovisionStatus unknownNCT05506553Not applicable
- Contoura With Phorcides Compared to Wavefront Optimized LASIKStatus unknownNCT05486546Not applicable
- CLEAR Procedure in Myopia and Astigmatism - Registry StudyStatus unknownNCT05484531
- The Long-term Outcome After Toric Intraocular Lens ImplantationStatus unknownNCT05465447
- Feasibility Investigation of Biometry and Tomography Measurements in a Heterogeneous Patient CohortStatus unknownNCT05458661Not applicable
- Effect of Single Incision Versus Three Planned Incisions to Reduce Pre-operative Astigmatism After Phacoemulsification.Status unknownNCT05457348Not applicable
- Evaluation of the Accuracy & Safety of the LaserArcs NomogramCompletedNCT05278442
- Influence of Different Toric Intraocular Lenses on IOL-capsular ComplexStatus unknownNCT05263518Not applicable
- Clinical Investigation of a Monofocal Toric Intra Ocular Lens (IOL) in Cataractous EyesCompletedNCT05255029Not applicable
- Use of a Disk of Amniotic Membrane (Visio-AMTRIX) in Postoperative Care After PKRTerminatedNCT05247658Phase 3
- Efficacy and Safety of CLEAR in Myopia and Astigmatism in Chinese PopulationStatus unknownNCT05229133Not applicable
- Assessment of Visual and Refractive Results and Rotational Stability of the TECNIS® Eyhance Toric II 1-piece Posterior Chamber Lens in Patients With Astigmatism Undergoing Cataract SurgeryTerminatedNCT05144308Not applicable
- Evaluation of Axial Stability of Two Models of Intraocular Lenses in Patients With an Eye Length More Than 26 mmCompletedNCT05129566Not applicable
- Comparison of Phacoemulsification and Corneal Damage Between FLACS and Standard Phaco With Two HandpiecesWithdrawnNCT05119270Not applicable
- Photorefractive Keratectomy (PRK) : Comparison of Corneal Haze Between Two Modes of De-epithelialisation (Laser Versus Manual Alcohol)TerminatedNCT05072977Not applicable
- Clinical Results of a Monofocal Aspheric Bitoric Intraocular Lens With Plate Haptics in Hyperopic Eyes (HIPER-AT-TORBI)CompletedNCT05058274
- PMCF Retrospective Study Outcomes of a Monofocal Toric Intraocular LensCompletedNCT05055076
- Astigmatism Correction With Intrastromal Arcuate Incisions in Eyes Undergoing Cataract Surgery With Femtosecond Laser Using the Cassini Ambient With Iris Registration (ARCUATAS)CompletedNCT05053620
- Clinical Comparison of 2 Daily Disposable Toric Soft Contact LensesCompletedNCT05039112Not applicable
- PMCF Study on Monofocal Toric IOL (PODEYE TORIC) in Europe (PHY2104)CompletedNCT04987216Not applicable
- Rotational Stability Analysis of a Toric Monofocal IOLCompletedNCT04933487Not applicable
- Effect of 1.8-mm Steep-axis Clear Corneal Incision on the Posterior Corneal Astigmatism in Candidates for Toric IOL ImplantationCompletedNCT04924231
- Laser Correction of Astigmatism Using Vector AnalysisStatus unknownNCT04913883
- Patient Satisfaction With Contoura Vision Topography-Guided LASIKCompletedNCT04903301Not applicable
- Clinical Investigation of Two Tecnis Investigational LensesCompletedNCT04890249Not applicable
- PMCF Study on SMILE Treatment of Myopia With and Without AstigmatismCompletedNCT04884672
- APIOC for Presbyopia and APIOC for Presbyopia With AstigmatismCompletedNCT04883099Not applicable
- PMCF Study on Monofocal Toric IOL (PODEYE TORIC) in SpainCompletedNCT04866719Not applicable
- At-home Testing Refraction Results With Best Corrected Visual Acuity (BCVA) Outcomes in AdultsCompletedNCT04820218Not applicable
- APIOC Sphere and APIOC AstigmatismCompletedNCT04806802Not applicable
- LASIK Surgery With a New Laser for the Treatment of Myopia Without AstigmatismStatus unknownNCT04794023Not applicable
- PMCF Study on Monofocal Toric IOL (PODEYE TORIC) in AsiaCompletedNCT04778501Not applicable
- A Comparison of the Accuracy of Toric Intraocular Lens FormulasCompletedNCT04776603
- Rotation Stability of Toric Intraocularlens (IOL) Compared Sitting Against Lying After Cataract OperationStatus unknownNCT04776057Not applicable
- PMCF Study on Monofocal Toric IOL (PODEYE TORIC)CompletedNCT04744467Not applicable
- Spectacle Prescribing in Early ChildhoodActive, not recruitingNCT04728451Not applicable
- Outcomes of a New Trans-epithelial Photorefractive Keratectomy (Streamlight PRK) Compared to Conventional PRK ProceduresCompletedNCT04710082Not applicable
- Wavefront Guided Scleral Lenses for Keratoconus and Irregular AstigmatismActive, not recruitingNCT04698590Not applicable
- Visual Results of the Acrysof IQ Vivity Toric Extended Vision Intraocular LensCompletedNCT04652037Not applicable
- Computer-aided Diagnosis of Ocular Diseases Based on Corneal BiomechanicsCompletedNCT04475900
- Toric Trifocal IOL Treatment With High Astigmatism and Hyperopia vs SMILE Enhancement After Trifocal IOL TreatmentCompletedNCT04468022Not applicable
- Clinical Performance of a Daily Disposable Toric Silicone Hydrogel Contact LensCompletedNCT04464044Not applicable
- Comparison of Deviation Types Among Astigmatic Children With Or Without AmblyopiaCompletedNCT04432181
- Z8 OCT-controlled 2D vs 3D LASIKCompletedNCT04426175Not applicable
- Incisional Correction of Corneal Astigmatism During PhacoemulsificationCompletedNCT04418986Phase 4
- Contribution of Posterior Corneal Astigmatism to Total Corneal Astigmatism in a Sample of Egyptian PopulationStatus unknownNCT04393740
- Influence of Residual Astigmatism on Visual Acuity in Patients Undergoing Cataract Surgery With Trifocal Intraocular Lens ImplantationStatus unknownNCT04387721