Clinical trials: Astigmatism
Astigmatism
Application of Phototherapeutic Keratectomy Mode to Mark the Axis of Astigmatism
Corneal refractive surgery is an effective way to correct refractive error. Modern corneal refractive surgery for the correction of myopia or hyperopia can achieve or close to the expected goal, but to eliminate astigmatism is…
- Trial name
- NCT06694051
- Testing
- marking
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Pediatric Cataract, Congenital Cataract
Toric Intraocular Lens Implantation for Pediatric Aphakia
Here, we conducted a nonrandomized clinical trial aims to evaluate and compare the prognosis of visual function in children of these two types of IOL implantation over a three-year postoperative period.
- Trial name
- NCT07088796
- Testing
- Toric IOL implantation, Non-toric IOL implantation
- Where
- China
- Volunteers
- 236 people
- Sponsor
- Eye & ENT Hospital of Fudan University
Cataract, Presbyopia
Clinical Investigation of a Small Aperture Extended Depth of Focus Intraocular Lens in Patients With Complex Corneas
The objective of this study is to evaluate the clinical outcomes of the IC-8 IOL implanted in patients with complex corneas after crystalline lens removal.
- Conditions
- Cataract, Presbyopia, Irregular Astigmatism
- Trial name
- NCT05574270
- Testing
- IC-8 Intraocular Lens (IOL)
- Where
- 2 sites in Philippines, Singapore
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- AcuFocus, Inc.
Ectasia
Intrastromal Corneal Ring for Ectasia After Refractive Surgery (Anel)
To evaluate the clinical outcomes of intrastromal corneal ring segment (ICRS) implantation to correct keratoconus on eyes with prior refractive surgery.
- Trial name
- NCT02008253
- Testing
- INTRASTROMAL CORNEAL RING SEGMENT
- Where
- Brazil
- Volunteers
- 29 people
- Sponsor
- Instituto de Olhos de Goiania
Cataract, Corneal Astigmatism
Performance of a Single-piece Toric Acrylic Intraocular Lens
Abstract Purpose: To evaluate the visual performance and rotational stability of the Tecnis Toric one-piece IOL (AMO, USA) during the first 3 post-operative months Design: Prospective single center study Setting: VIROS - Vienna…
- Trial name
- NCT02155959
- Testing
- toric intraocular lens
- Volunteers
- 30 people
- Sponsor
- Prim. Prof. Dr. Oliver Findl, MBA
Astigmatism
Bilateral Dispensing Study of MyDay Toric, 1-day Acuvue Moist for Astigmatism, and Dailies Aquacomfort Plus Toric Lenses
Bilateral dispensing study of MyDay Toric, 1-day Acuvue Moist for Astigmatism, and Dailies Aquacomfort Plus Toric lenses
- Trial name
- NCT03134248
- Testing
- Dailies Aquacomfort Plus Toric, 1-Day Acuvue Moist for Astigmatism, MyDay Toric
- Where
- Canada
- Volunteers
- 60 people
- Sponsor
- CooperVision, Inc.
Cataract, Nuclear Sclerosis
Evaluating the Need for the Pseudophakic Intraoperative Abberrometry in Toric IOL Implantation
To determine clinically significant difference in results obtained from cataract surgery using IA. One eye will receive aphakic measurements only and the fellow eye will receive aphakic and then pseudophakic measurements when…
- Conditions
- Cataract, Nuclear Sclerosis, Cortical Cataract, Posterior Subcapsular Cataract
- Trial name
- NCT03819842
- Testing
- Pseudophakic Measurement
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Alterman, Modi, & Wolter Ophthalmic Physicians & Surgeons
Hyperopia
Safety and Effectiveness of the TENEO 317 Model 2 (1.28 US) Excimer Laser for Laser In Situ Keratomileusis (LASIK) Surgery to Treat Hyperopia With or Without Astigmatism
This will be a multicenter, prospective, open label, non-randomized, single arm 12 month study, evaluating the safety and effectiveness of the TECHNOLAS TENEO 317 Model 2 (Software version "1.28 US") excimer laser when used in…
- Trial name
- NCT05264623
- Testing
- TENEO 317 Model 2 excimer laser
- Where
- 9 sites in United States
- Volunteers
- 140 people
- Sponsor
- Bausch & Lomb Incorporated
Presbyopia
Bifocal Contact Lens Study for Adults With Age-Related Near Vision Loss
The primary objective of this study is to evaluate the distance, intermediate and near visual performance of Clerio designed single vision and Clerio designed LIRIC modified bifocal lenses (+2.00D add) compared to commercially…
- Trial name
- NCT03653715
- Testing
- Clerio Vision LIRIC-modified Bifocal Contact Lens, Johnson & Johnson 1-Day Acuvue Moist Multifocal Contact Lens, Johnson & Johnson 1-Day Acuvue Moist Contact Lens
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Clerio Vision, Inc.
Cataract
Rotational Stability of the TECNIS Eyhance Toric
Evaluation of the rotational stability of a new toric intraocular lens (IOL), the TECNIS Eyhance toric II.
- Trial name
- NCT05126368
- Testing
- Cataract surgery
- Where
- Austria
- Volunteers
- 50 people
- Sponsor
- Vienna Institute for Research in Ocular Surgery
Myopia, Astigmatism
Comparative In-Vivo Wetting Characteristics of Silicone Hydrogel Materials With Selected Lens Care Systems
The purpose of this study is to evaluate the lipid uptake, wetting characteristics, and visual performance of AIR OPTIX® AQUA and ACUVUE® OASYS® with HYDRACLEAR® contact lenses when used in conjunction with two contact lens care…
- Conditions
- Myopia, Astigmatism, Refractive Error
- Trial name
- NCT01699750
- Testing
- Lotrafilcon B contact lenses, Senofilcon A contact lenses, OPTI-FREE® PUREMOIST® MPDS
- Where
- United States
- Volunteers
- 109 people
- Sponsor
- Alcon Research
Cataract
Femtosecond Laser-assisted Arcuate Incisions Versus Manual Arcuate Incisions Outcomes
This study is designed to compare the effectiveness of LenSx laser arcuate relaxing incisions vs. manual (blade) arcuate relaxing incisions in patients with low, but significant, levels of astigmatism.
- Trial name
- NCT04126174
- Testing
- femtosecond laser system arcuate corneal incision, Manual LRI
- Where
- United States
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- Gainesville Eye Associates
Astigmatism
Comparison of Cross-cylinder and Conventional Photorefractive Keratectomy(PRK) in Correcting Medium-high Astigmatism
The purpose of this study is to determine whether cross-cylinder approach is more effective than routine method in laser correction of astigmatism.
- Trial name
- PRK (NCT00663923)
- Testing
- photorefractive keratectomy (PRK)
- Where
- Iran
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Tabriz University
Astigmatism
Bilateral Dispensing Clinical Trial of Stenfilcon A Against Etafilcon A for Astigmatism
Bilateral dispensing clinical trial of stenfilcon A against etafilcon A for astigmatism.
- Trial name
- NCT02410824
- Testing
- stenfilcon A toric lens, etafilcon A toric lens
- Where
- 2 sites in United States, Canada
- Volunteers
- 52 people
- Sponsor
- CooperVision, Inc.
Astigmatism
Clinical Evaluation of Invigor Toric 1-Day Contact Lenses
An evaluation of the clinical performance of the 1-day toric test contact lens compared to the 1-day toric control contact lens over one hour of lens wear.
- Trial name
- NCT04016623
- Testing
- 1-day toric test contact lens, 1-day toric control contact lens
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- CooperVision, Inc.
Cataract, Astigmatism
Wavefront Analyzes and Visual Performance of Three Multifocal Intra-ocular Lenses
The purpose of this study is to determine if differences in the design of multifocal intra-ocular lenses would mean different values of higher-order aberrations and different performance in objective parameters such as modulation…
- Trial name
- IOL (NCT00876707)
- Testing
- Tecnis implant, ReSTOR implant, ReZoom implant
- Where
- Brazil
- Volunteers
- 60 people
- Sponsor
- University of Sao Paulo
Aphakia, Corneal Astigmatism
Clinical Investigation of the Visual Outcomes and Safety of a Trifocal Toric IOL in an Asian Population
The purpose of this study is to evaluate the clinical performance of the ACRYSOF® IQ PanOptix® Toric Trifocal intraocular lens (IOL) when implanted in the eye following cataract removal in an Asian population.
- Trial name
- NCT04528069
- Testing
- ACRYSOF® IQ PanOptix® Toric Trifocal IOL, Cataract surgery
- Where
- 4 sites in Australia
- Volunteers
- 58 people
- Sponsor
- Alcon Research
Astigmatism
Orientation Characteristics of Daily Disposable Toric Contact Lenses
Brief summary: Approximately 30 soft toric contact lens adapted subjects will be enrolled in this feasibility, bilateral, randomized, double-masked (subject and investigator), repeated measures insertion study.
- Trial name
- NCT06069609
- Testing
- kalifilcon A Daily Disposable Toric, Acuvue Oasys 1-Day for Astigmatism
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Bausch & Lomb Incorporated
Astigmatism
Prospective Evaluation of the Effectiveness of the Femtosecond Laser-assisted Refractive Astigmatic Keratotomy.
This clinical phase IV study is an open, prospective phase IV study and acts to evaluate the effectiveness of the femtolaser-assisted astigmatic keratotomy.
- Trial name
- NCT01885780
- Testing
- Laser-assisted Astigmatic keratotomy
- Where
- Czechia
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Technolas Perfect Vision GmbH
Myopia, Myopic Astigmatism
Using the VisuMax Femtosecond Laser System to Perform SMILE Optimized for Presbyopia by Modulation of Postoperative Spherical Aberration
The intended purpose of the investigational device in the study is the correction of myopia and myopia with astigmatism in the CE (Conformité Européene) approved range and optimized for presbyopic patients using the treatment…
- Conditions
- Myopia, Myopic Astigmatism, Presbyopia
- Trial name
- NCT05684237
- Testing
- HiSMILE treatment option
- Where
- United Kingdom
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- London Vision Clinic