Astigmatism: all 420 studies
Page 4 of 5. Open to participants first (54), then studies with results posted, then the rest; newest registration first within each.
- Rotational Stability of the Acrysof, Tecnis and Envista Intraocular LensesCompletedNCT04345380Not applicable
- Femtosecond Laser-assisted Astigmatism TreatmentStatus unknownNCT04321226Phase 4
- Hyperopia Detection GCK With Glow FixationCompletedNCT04297969
- Anesthetic Impregnated Bandage Soft Contact Lens (BSCL) in Pain Management After Photorefractive Keratectomy (PRK)Status unknownNCT04283331Phase 4
- Refractive Accuracy of "2WIN" and Portable AutorefractorsCompletedNCT04249505
- Clinical Investigation of the Cheetah System For The Correction of Myopia With and Without AstigmatismCompletedNCT04200898Not applicable
- Toric Intraocular Lenses for Cataract Patients in the NHSStatus unknownNCT04122651Not applicable
- SMILE (Small Incision Lenticule Extraction) in the DoD (Department of Defense)Status unknownNCT04072289Not applicable
- Clinical Outcomes of Small-incision Lenticule Extraction (SMILE) Using Vector Planning Method.CompletedNCT03947944Not applicable
- Laser In-situ Keratomileusis With Crosslinking Compared to Conventional LASIK in Patients With High MyopiaCompletedNCT03913338Not applicable
- Non-comparative Trial Following Participants Implanted Bilaterally With Mini WELL Toric Ready Intraocular Lens for 6 Months After the Second Eye Implant (FUSION)CompletedNCT03861351Not applicable
- Treatment of Vision Disturbances Due to Corneal Irregularities by Trans-epithelial Optical Phototherapeutic Keratectomy (TE-oPTK)Active, not recruitingNCT03841253Not applicable
- Evaluating the Need for the Pseudophakic Intraoperative Abberrometry in Toric IOL ImplantationCompletedNCT03819842Not applicable
- Neural Mechanisms Underlying AstigmatismStatus unknownNCT03735602Not applicable
- Visual Outcomes for Toric Efficacy StudyCompletedNCT03728218Not applicable
- Apioc Contact Lens FeasibilityCompletedNCT03688672Not applicable
- Toric IOL vs Non-toric IOL With LRI for Corneal AstigmatismStatus unknownNCT03633851Not applicable
- Topography Guided LASIK by Different Protocols for Treatment of AstigmatismCompletedNCT03597906Not applicable
- Assessing the Astigmatism Reducing Effect With Toric IOLs in Eyeswith Low AstigmatismStatus unknownNCT03538964Not applicable
- Clinical Study to Evaluate Effectiveness of Digital RefractionCompletedNCT03502863Not applicable
- Astigmatism in Keratoconus PatientsStatus unknownNCT03450213Not applicable
- Effectiveness of Toric Intraocular Lenses for Treating Corneal Astigmatism in Patients With Cataract and Previous DALKCompletedNCT03398109Not applicable
- Rotational Stability of V4C Toric Implantable Contact Lenses After On Axis Implantation Measured With OPD Scan 3Status unknownNCT03391544Not applicable
- The MORE Study: Manifest vs. Online Refraction EvaluationStatus unknownNCT03313921Not applicable
- Topography-Guided Customized PRK Versus Q-value Adjusted PRK in Correction of Myopia With or Without AstigmatismCompletedNCT03291873Not applicable
- Manually Performed Limbal Relaxing Incisions vs Femtosecond Laser-guided Astigmatic KeratotomyCompletedNCT03264534Not applicable
- Clinical Evaluation of Toric Intraocular LensCompletedNCT03242486Not applicable
- Comparison Between TICL and ICL+AK for High Myopic AstigmatismCompletedNCT03202485Not applicable
- How Astigmatism Influences Corneal Biomechanics and Intraocular PressureCompletedNCT03162471
- Prevalence of Corneal Astigmatism Before Glaucoma Surgery in Chinese Patients With Primary Angle-closure GlaucomaCompletedNCT03159780
- Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular CorneaCompletedNCT03140046Not applicable
- Tomographic Analysis of Anterior, Posterior, Total Corneal Refractive Power Changes After Laser-assisted KeratotomyCompletedNCT03097302
- Comparison of Clinical Outcomes of Toric Intraocular LensCompletedNCT03085901Not applicable
- Comparison Between FS- LASIK and FS-SMILE for Correction of Myopia and Myopic AstigmatismStatus unknownNCT02962544Not applicable
- Influence of Trabeculectomy and Phaco-trabeculectomy on Corneal AstigmatismStatus unknownNCT02945202Not applicable
- Evaluating the Effect of Laser Vision Surgery, Phakic Intraocular Lens Implantation, Cataract Surgery, and Pupil Dilation on the Iris Recognition Scanner Function of SmartphoneCompletedNCT02939001Not applicable
- Changes of Visual Function, Ocular Surface Structures and Physiology After Long-Termed Contact Lens WearStatus unknownNCT02894489Not applicable
- Performance of a Photoscreener for Vision Screening in a Haitian Pediatric PopulationWithdrawnNCT02655432
- Clinical Evaluation of Efficacy and Stability of AT TORBI 709M 4-haptic Toric IOL in Cataract SurgeryStatus unknownNCT02618018Not applicable
- High Resolution Wavefront-guided vs. Wavefront Optimized LASIKCompletedNCT02565537Not applicable
- Early Changes Among FLEx, LASIK and FS-LASIKCompletedNCT02551796Not applicable
- Changes Between Lenticule Extraction and Femtosecond Laser-assisted Laser in Situ KeratomileusisCompletedNCT02550353Not applicable
- Early Changes Between Lenticule Extraction and Small-Incision Lenticule ExtractionCompletedNCT02540785Not applicable
- Scleral Versus Corneal RGP Contact Lenses in Irregular Cornea DisordersCompletedNCT02444923Not applicable
- Correction of Myopia Wtih or Without Astigmatism Using the VisuMax™ Femtosecond LaserCompletedNCT02430428Not applicable
- Rotational Stability After Nanoflex Collamer Toric Intraocular Lens Implantation in Astigmatic PatientsStatus unknownNCT02412215Not applicable
- Rayner Toric IOL Rotational StabilityStatus unknownNCT02393313Not applicable
- VERION Versus Conventional, Manual Ink-marking in Toric IOL ImplantationCompletedNCT02370953Not applicable
- Combined 25-gauge Vitrectomy and Cataract Surgery With Toric Intraocular Lens With Idiopathic Epiretinal Membrane.Status unknownNCT02328157Not applicable
- Development of a Validated Chart for Intermediate Vision AssessmentStatus unknownNCT02279446
- Prospective Evaluation of the Long-term Effectiveness of the Femtosecond Laser-assisted Arcuate IncisionsStatus unknownNCT02164994
- Quality of Vision and Quality of Life With LASIKCompletedNCT02161263
- Performance of a Single-piece Toric Acrylic Intraocular LensCompletedNCT02155959
- Diurnal Changes of the Cornea - a Pilot StudyCompletedNCT02155556
- Impact of a Corneal Pre-cut on Wound Architecture and Astigmatism in Cataract Surgery - a Pilot StudyCompletedNCT02155270Not applicable
- Wavefront-guided PRK vs Wavefront-optimized PRKCompletedNCT02091934Not applicable
- Limbal Relaxing Incision Versus Toric Intraocular Lens for Corneal Astigmatism During Cataract Surgery.Status unknownNCT02067429Not applicable
- Evaluation Study on Corneal Lens for Vision CorrectionCompletedNCT02053688Not applicable
- Reduction of Corneal Astigmatism With Toric Intraocular Lens Implantation in Congenital CataractCompletedNCT02040129Not applicable
- Corneal Epithelial and Stromal Thickness Distribution in KeratoconusCompletedNCT02023619
- Refraction Determination AnalysisCompletedNCT01995435Not applicable
- Comparisons of the Astigmatic Power of Toric Intraocular Lens Using Three Toric Calculators: AcrySof, TECNIS, and iTrace Toric CalculatorCompletedNCT01978106
- Corneal Power, Astigmatism, and Aberration Changes After LASIKCompletedNCT01893671
- Prospective Evaluation of the Effectiveness of the Femtosecond Laser-assisted Refractive Astigmatic Keratotomy.CompletedNCT01885780Phase 4
- Impact of Incision Size and Architecture on Wound Stability and Astigmatism in Cataract Surgery: an Exploratory StudyCompletedNCT01778998Not applicable
- Comparison of Toric IOL Implantation and Opposite Clear Corneal Incision During Cataract Surgery to Correct Corneal AstigmatismCompletedNCT01763151Phase 4
- A Study to Address Precision and Refractive Predictability of Femtosecond Laser-assisted Astigmatic Keratotomy Following the Cataract SurgeryCompletedNCT01752218Not applicable
- A Trial of Toric Versus Non-toric Intraocular Lenses in Phacoemulsification Cataract SurgeryStatus unknownNCT01712503Not applicable
- Astigmatism Post-trabeculectomyCompletedNCT01711190
- Surgical Correction of AstigmatismWithdrawnNCT01680354Not applicable
- A Prospective Study of Femtosecond Laser Intracorneal LensectomiCompletedNCT01673503Phase 3
- Construction of Computerized Intraoperative Keratometer and Experimental StudyCompletedNCT01636167Not applicable
- Prospective Investigation of SUPRACOR Visual Outcomes of Presbyopic Hyperopic Patients With and Without AstigmatismStatus unknownNCT01628146Phase 4
- Post Approval Study of the AcrySof® IQ Toric Intraocular Lens (IOL) Models SN6AT6-SN6AT9CompletedNCT01601665
- Effect of Posterior Corneal Toricity on Refractive Outcome of PseudophakiaStatus unknownNCT01554761Phase 4
- LASIK Using the Alcon Allegretto Wavefront-Guided Excimer Laser vs AMO Visx Wavefront-Guided Excimer LaserCompletedNCT01454843Phase 4
- Efficacy of the Wavefront Optimized (WFO) Profile in Non-anterior AstigmatismsCompletedNCT01432834Not applicable
- SUPRACOR for Myopia and Myopic AstigmatismStatus unknownNCT01404884Phase 3
- Clinical Evaluation of Toric Intraocular Lens Made by AurolabStatus unknownNCT01396616Phase 4
- An Outcomes Study Comparing the Intralase FS 60 to the Intralase iFS When Performing LASIK Surgery for NearsightednessCompletedNCT01365728
- Randomized Comparison of the Abbott WHITESTAR Signature System With Ellips Tranversal Ultrasound vs. the Alcon Infiniti With the Ozil Torsional Handpiece in Phacoemulsification: A Contralaterally-Controlled TrialCompletedNCT01279031Phase 4
- Endothelial Cell Loss and Induced Astigmatism After Wound-directed and Wound-assisted IOL InjectionCompletedNCT01250964Not applicable
- Randomized, Non-inferiority Trial Comparing SMILE and LASIKStatus unknownNCT01216475Not applicable
- AcrySof Toric Clinical ResultsCompletedNCT01214863
- Wavefront-guided Photorefractive Keratectomy (PRK) Versus Wavefront-guided Lasik for MyopiaCompletedNCT01140594Not applicable
- Wavefront-guided Versus Wavefront-optimized LASIK for NearsightednessCompletedNCT01138189
- A Comparison of Fellow Eyes Undergoing LASIK or PRK With a Wavefront-guided Excimer Laser Versus a Wavefront-optimized Excimer LaserCompletedNCT01135719Not applicable
- Prospective Evaluation of Limbal Relaxing Incision (LRI) in Conjunction With Phacoemulsification Surgery for Astigmatic Correction in Chinese EyesStatus unknownNCT01122992Not applicable
- Optical Quality, Threshold Target Identification, and Military Target Task Performance After Advanced Keratorefractive SurgeryCompletedNCT01097525Not applicable
- Randomized, Prospective Comparison of the Outcome of Toric Implantable Contact Lens (TICL) and Q-LASIK for the Correction of Myopia With AstigmatismStatus unknownNCT01088568Not applicable
- Astigmatism Management in Cataract Surgery With the AcrySof Toric Intraocular LensCompletedNCT01075542Not applicable
- Study to Evaluate the Clinical Performance of SynergEyes A2 Hybrid Contact LensesStatus unknownNCT01058629Not applicable
- A Comparison of Corneal Aberrations in Subjects With Contralateral AcrySof IQ Toric Intraocular Lens (IOL) and AcrySof IQ IOL With Limbal Relaxing Incision (LRI)CompletedNCT01045733Not applicable
- Complete Easy Rub Comparative Efficacy StudyWithdrawnNCT01019564Not applicable
- Intrastromal Corneal Ring for High Astigmatism on PostkeratoplastyCompletedNCT01018797Phase 4
- Toric Orthokeratology - Slowing Eye ElongationCompletedNCT00978692Not applicable
- Intrastromal Correction of Ametropia by a Femtosecond LaserStatus unknownNCT00928122Phase 3
- Use of Toric Intraocular Lens to Neutralize Keratometric AstigmatismTerminatedNCT00925886Not applicable
- Investigation of Corneal Aberrations and Visual Outcomes in Patients Implanted With an AcrySof Toric Intraocular Lens (IOL)WithdrawnNCT00878839Not applicable
- Wavefront Analyzes and Visual Performance of Three Multifocal Intra-ocular LensesCompletedNCT00876707Phase 1/2