Clinical trials: Error, Refractive
Myopia, Refractive Errors
Dual-Action Lenses for Slowing Myopia in Children and Teens: A Randomized, Double-Blind Trial
This is a single-center, randomized, double-blind, controlled study to test whether a new type of eyeglass lens - a "dual-action" lens that combines two technologies (multiple defocus zones and dot diffusion) - can slow the…
- Trial name
- NCT07854457
- Testing
- Dual-Action Myopia-Control Spectacle Lens, Stellest Myopia-Control Spectacle Lens（Highly Aspherical Lenslet Target / HALT Lens）
- Where
- China
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Keratoconus, Astigmatism
Corneal Epithelial and Stromal Thickness Distribution in Keratoconus
The purpose of the study was to identify corneal epithelial- and stromal-thickness distribution patterns in keratoconic eyes using spectral-domain-optical coherence tomography (SD-OCT).
- Trial name
- NCT02023619
- Where
- Norway
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- SynsLaser Kirurgi AS
Myopia, Strabismus
A Trial of Bifocals in Myopic Children With Esophoria
To test the hypothesis that correction with bifocal spectacle lenses rather than single-vision lenses will slow the progression of myopia in children with near-point esophoria.
- Conditions
- Myopia, Strabismus, Esophoria
- Trial name
- NCT00000128
- Testing
- Bifocal Spectacle Lenses
- Sponsor
- National Eye Institute (NEI)
Myopia
Patient Reported Outcomes With WaveLight Plus LASIK
This study is a single-site, single-arm, prospective, observational study of subject satisfaction, quality of vision, and quality of life after bilateral LASIK surgery. Subjects will be assessed 6 months post-operatively.
- Trial name
- NCT07087665
- Testing
- Wavelight Plus
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- OVO LASIK + Lens
Myopia
Evaluating the Efficacy and Safety of Contact Lens Lubricant in Rigid Gas Permeable Corneal Contact Lens Wearers
This trial aims to evaluate the safety and effectiveness of LACRIFRESH OCU-DRY 0.3% OSD, a contact lens lubricant produced by AVIZOR, S.A.
- Trial name
- NCT07091825
- Testing
- LACRIFRESH OCU-DRY 0.3% OSD, Rigid contact lens lubricant
- Where
- 3 sites in China
- Volunteers
- 152 people
- Sponsor
- Avizor SA
Cataract
A Comparison of Visual Function After Bilateral Implantation of Presbyopia-correcting Intraocular Lenses (IOLs)
The purpose of this study is to prospectively evaluate postoperative visual and refractive parameters in a series of subjects bilaterally implanted with the AcrySof® IQ ReSTOR® +3 versus those bilaterally implanted with the…
- Trial name
- NCT01166971
- Testing
- ReSTOR +3, Tecnis MF
- Where
- 3 sites in United States
- Volunteers
- 65 people
- Sponsor
- Alcon Research
Presbyopia, Near Vision
Evaluation of the Efficacy and Safety of LNZ101 and LNZ100 for the Presbyopia
A Multi-Center, Randomized, Double-Masked, Placebo-Controlled Phase 3 Evaluation of the Efficacy and Safety of LNZ101 and LNZ100 for the Treatment of Presbyopia
- Conditions
- Presbyopia, Near Vision, Miosis, Eye Diseases
- Trial name
- NCT06045299
- Testing
- Aceclidine+Brimonidine combination ophthalmic solution, Aceclidine ophthalmic solution
- Where
- 19 sites in China
- Volunteers
- 300 people
- Sponsor
- Corxel Pharmaceuticals
Myopia, Hyperopia
Accuracy of LASIK Flaps Created With the LenSx® Femtosecond Laser - A Pilot Study
The purpose of this study is to evaluate the thickness accuracy of Laser-assisted in situ keratomileusis (LASIK) flaps created with the LenSx® Laser.
- Trial name
- NCT02575911
- Testing
- Femtosecond Laser System, LASIK surgery
- Where
- United States
- Volunteers
- 34 people
- Sponsor
- Alcon Research
Presbyopia
Clinical Performance of a Phakic Intraocular Lens (IOL)
This study will evaluate the clinical performance of a phakic intraocular lens (IOL) for the improvement of Uncorrected Near Visual Acuity (UCNVA) in subjects who require between +1.00 and +2.50 Reading Add.
- Trial name
- NCT03499821
- Testing
- EDOF ICL
- Where
- 6 sites in Belgium, Spain
- Volunteers
- 41 people
- Sponsor
- Staar Surgical Company
Epiretinal Membranectomy
Change of Retinally-Induced Aniseikonia in Patients With Epiretinal Membrane After Vitrectomy
Epiretinal membrane is common disease, affecting 5~10 % incidence over 60 years old population. It reduce visual acuity, cause metamorphopsia.
- Trial name
- NCT01901406
- Where
- South Korea
- Volunteers
- 24 people
- Sponsor
- Yonsei University
Myopia, Visual Fatigue
Impact of Various Myopia Management Strategies on Asthenopia Among Pediatric and Adolescent Populations
Different myopia control interventions have certain effects on ocular asthenopia in children and adolescents. As children and adolescents are in a critical period of visual development, the presence of asthenopia may lead to an…
- Trial name
- NCT07691671
- Volunteers
- 600 people
- Sponsor
- Tianjin Medical University Eye Hospital
Presbyopia
Vivity IOL: Emmetropia Compared to Monovision.
Current visual outcomes expectations of cataract patients are similar to those of refractive surgery patients. Their desire is to be spectacle independent for far, intermediate and near vision activities.
- Trial name
- NCT05464732
- Testing
- Vivity IOL emmetropia, Vivity IOL monovision
- Where
- United States
- Volunteers
- 33 people
- Sponsor
- Carolina Eyecare Physicians, LLC
Refraction Error, Photorefractive Keratectomy
Comparison of Ketorolac Tromethamine 0.5%-Soaked Bandage Contact Lenses Versus Non-Medicated Bandage Contact Lenses on Postoperative Pain Control After Photorefractive Keratectomy
Photorefractive keratectomy (PRK) is a well-established surface ablation procedure for the correction of refractive errors. Despite excellent visual and refractive outcomes, postoperative pain remains a significant concern…
- Trial name
- NCT07705763
- Testing
- Ketorolac Tromethamine 0.5%-Soaked Bandage Contact Lenses, Contact Bandage Lenses
- Where
- Pakistan
- Volunteers
- 60 people
- Sponsor
- Madina Teaching Hospital Faisalabad
Refractive Error, Corneal Implantation
Piggyback Sulcoflex Toric IOL for Correcting Refractive Error Following Corneal Transplantation
A prospective study to evaluate the safety and efficacy of a piggyback sulcoflex toric intraocular lens in pseudophakic patients for correcting refractive errors following corneal transplantation
- Conditions
- Refractive Error, Corneal Implantation, Intraocular Lens Implantation
- Trial name
- NCT01718184
- Testing
- toric intraocular lens implantation, Sulcoflex intraocular lens implantation
- Where
- Israel
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Rabin Medical Center
Myopia
Multi-Center 2-Week Clinical Evaluation of Three Silicone Hydrogel Contact Lenses
The purpose of this study is to compare the clinical performance of three silicone hydrogel contact lenses over a 2 week period.
- Trial name
- NCT01244516
- Testing
- galyfilcon A, BC 8.30, lotrafilcon B, BC 8.60, comfilcon A, BC 8.60
- Where
- 35 sites in United States
- Volunteers
- 540 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia, Hyperopia
One-month Clinical Evaluation of Oté Sensation Multi-Purpose Solution Care System
The purpose of this study is to evaluate the clinical performance of the contact lens care product Oté Sensation in a representative population of soft contact lens wearers.
- Trial name
- NCT03278223
- Testing
- Test solution, Control solution
- Where
- 11 sites in United States, United Kingdom
- Volunteers
- 194 people, healthy volunteers welcome
- Sponsor
- OTE North America
Myopia, Astigmatism
LASIK Surgery With a New Laser for the Treatment of Myopia Without Astigmatism
The AQUARIUZ ablation laser is a solid-state laser and has been CE approved for corneal surgery since March 2020 for the treatment of short- and longsightedness with and without astigmatism.
- Trial name
- AQUARIUZ2020 (NCT04794023)
- Testing
- Corneal Ablation
- Where
- Switzerland
- Volunteers
- 27 people
- Sponsor
- Ziemer Ophthalmic Systems AG
Refractive Errors
Cognitive Level Enhancement Through Vision Exams and Refraction
The investigators aim to conduct a mixed-method study in which a randomised controlled trial (RCT) and a descriptive qualitative study will be conducted.
- Trial name
- CLEVER (NCT05458323)
- Testing
- Free near and Distance Vision glasses
- Where
- India
- Volunteers
- 820 people
- Sponsor
- Queen's University, Belfast
Refractive Errors, Myopia
Safety and Suitability of ICL for Correction of Refractive Errors Without the Use of Dispersive OVDs
The goal of this observational study is to test whether surgeries for lenses designed to be implanted in the eye to correct refractive error can be done without the need for using viscoelastic substances that are used routinely…
- Conditions
- Refractive Errors, Myopia, Myopic Astigmatism, Hypermetropia
- Trial name
- NCT06371079
- Testing
- phakic intraocular lens implantation traditional, phakic intraocular lens implantation reduced OVD
- Where
- Iraq
- Volunteers
- 448 people
- Sponsor
- Loay Abdulmutalib Almusawi
Myopia
Effect of Preoperative Pupil Size on Quality of Vision After Wavefront-Guided LASIK
The purpose of this study is to evaluate whether the size of the pupil has an effect on quality of vision in patients undergoing LASIK surgery.
- Trial name
- NCT00889941
- Testing
- LASIK
- Where
- United States
- Volunteers
- 51 people
- Sponsor
- Stanford University
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