Clinical trials: Refractive Error
Cataract, Presbyopia Correction
The Purpose is to Evaluate Visual Acuity for Distance, Intermediate and Near and Additionally Contrast Sensitivity at 25% and 10% of Illumination After Implantation of Trifocal IOL, Extended Range of Vision IOL, Bifocal IOL With Low Addition and Monofocal IOL
The objective of this study was to evaluate the effect of intraocular lens (IOL) selection on visual acuity and refractive outcomes, to assess the impact of IOL type on postoperative contrast sensitivity, and to investigate…
- Conditions
- Cataract, Presbyopia Correction, Visual Acuity
- Trial name
- IOL (NCT07008768)
- Testing
- Cataract surgery and refractive lens exchange surgery, TRIFOCAL IOL, EROV IOL
- Where
- Croatia
- Volunteers
- 131 people, healthy volunteers welcome
- Sponsor
- University Eye Hospital Svjetlost
Astigmatism, Myopia
Effect of a Myopia Control Lens on the Astigmatism in Children
The goal of this clinical trial is to investigate over a one-year period the effect of myopia control spectacle lenses on astigmatism in children aged 6 to 13 years with myopia and astigmatism.
- Trial name
- MAC (NCT07810725)
- Testing
- Lenslet-based myopia control spectacle lens
- Volunteers
- 15 people
- Sponsor
- Essilor International
Myopia
Silicone Hydrogel Soft Contact Lens 7-Day Extended Wear Basis
The objective of this study is to evaluate the safety and effectiveness of the Bausch + Lomb samfilcon A soft (hydrophilic) contact lens, a new silicone hydrogel contact lens, compared to the Bausch + Lomb PureVision® soft…
- Trial name
- NCT02939950
- Testing
- Bausch + Lomb Samfilcon A Soft Contact Lens, Bausch + Lomb Pure Vision Soft Contact Lens
- Where
- United States
- Volunteers
- 816 people, healthy volunteers welcome
- Sponsor
- Bausch Health Americas, Inc.
Cornea, Astigmatism
Multifocal-toric IOL Compared to Multifocal IOL Combined With Limbal Relaxing Incisions for Correction of Moderate Astigmatism During Cataract Surgery
The purpose of the present study is to compare the outcome of multifocal toric intraocular lens with standard multifocal lens plus incisional surgery in patients undergoing bilateral cataract surgery.
- Conditions
- Cornea, Astigmatism, Cataract
- Trial name
- NCT06277349
- Testing
- Toric multifocal IOL, Non-toric multifocal IOL
- Volunteers
- 30 people
- Sponsor
- Moorfields Eye Hospital NHS Foundation Trust
Myopia
Investigation of the Regulation of Retinal and Choroidal Blood Vessels in Various AL Based on WF SS-OCTA Detection With Changes in Body Position
This prospective observational study aims to understand the effects of different subaxial body positions on choroidal and retinal blood vessel density.
- Trial name
- NCT06587776
- Volunteers
- 60 people
- Sponsor
- Science and Technology Department of Sichuan Province
Myopia, Astigmatism
Safety and Efficacy Evaluation of a New Contact Lens Disinfecting Solution in Soft Contact Lens Wearers
The purpose of this study is demonstrate substantial equivalence of an investigational contact lens disinfecting solution to a commercially available contact lens solution in silicone hydrogel and soft contact lens wearers.
- Conditions
- Myopia, Astigmatism, Hyperopia, Refractive Error
- Trial name
- NCT01912768
- Testing
- FID 120947A contact lens disinfecting solution, renu fresh multi-purpose solution, Soft contact lenses
- Volunteers
- 362 people
- Sponsor
- Alcon Research
Cataract, Myopia
Effect of TrueTear Corneal Surface Imaging
This study will evaluate the utility of TrueTear™ to improve anterior corneal surface imaging quality before cataract surgery, refractive lens exchange, or laser refractive surgery.
- Trial name
- NCT03637348
- Testing
- TrueTear
- Where
- United States
- Volunteers
- 45 people
- Sponsor
- Price Vision Group
Presbyopia
A Study to Assess Safety and Efficacy in Participants Age 40 to 55 With Presbyopia (Old Eye) Who Receive AGN-190584 in Both Eyes Twice Daily
Currently available treatments for presbyopia (old eye) include nonsurgical options (spectacles or contact lenses) and surgical options, however, each has its own risks and limitations.
- Trial name
- Virgo (NCT04983589)
- Testing
- Pilocarpine HCl, Vehicle
- Where
- 23 sites in United States
- Volunteers
- 230 people
- Sponsor
- Allergan
Refractive Errors
Retrospective Study of the Health Benefits of Ultra-Violet Filtering Contact Lenses
The purpose of this study is to examine the long term effect of ultra-violet filtering contact lenses on macular pigment density (MPOD) and accommodative function.
- Trial name
- NCT01444053
- Testing
- No Intervention
- Where
- United Kingdom
- Volunteers
- 41 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia, Astigmatism
Clinical Evaluation of 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 up to 3 months post-operatively.
- Trial name
- NCT07127757
- Testing
- Wavelight Plus LASIK
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Laser Defined Vision
Myopia, Light; Therapy, Complications
Optimizing Light Exposure for Myopia Prevention and Control (LightSPAN)
The goal of this clinical trial is to evaluate whether the optimization of daily exposure to light in primary school children can lead to better myopia prevention and control.
- Conditions
- Myopia, Light; Therapy, Complications, Myopia Progression, Short-Sighted
- Trial name
- LightSPAN (NCT06631339)
- Testing
- Light Intervention, Digital Intervention, Control Group
- Where
- 5 sites in Singapore
- Volunteers
- 396 people, healthy volunteers welcome
- Sponsor
- National University of Singapore
Cataract, Lens Opacities
PMCF Study on Monofocal Toric IOL (PODEYE TORIC)
This is a single-center, prospective, open-label PMCF study whereby patients undergoing routine cataract surgery will have mono- or bilateral implantation of hydrophobic acrylic monofocal toric intraocular lens PODEYE TORIC…
- Conditions
- Cataract, Lens Opacities, Astigmatism
- Trial name
- PHY2101 (NCT04744467)
- Testing
- IOL implantation experimental
- Where
- Czechia
- Volunteers
- 12 people
- Sponsor
- Beaver-Visitec International, Inc.
Myopia, Hyperopia
Corneal Asphericity Adjustment (Q Adjustment) in Myopic and Hyperopic Patients Undergoing Refractive Correction With Excimer Laser
To study the postoperative results in myopic and hyperopic eyes treated with two different laser ablation algorithms (STD and F-CAT), both FDA approved.
- Trial name
- NCT01296867
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Myopia
Myopic Control for High Myopes Using Orthokeratology
The purpose of this study is to evaluate and compare the eyeball elongation in high myopic children using partial correction orthokeratology and single-vision spectacles.
- Trial name
- HM-PRO (NCT00977236)
- Testing
- Orthokeratology lenses, Single-vision spectacle lenses
- Where
- China
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Myopia
Dual Focus Soft Contact Lens Wear Cessation Study
The purpose of this study is to investigate the effect of ceasing treatment with dual focus soft contact lenses.
- Trial name
- NCT05779072
- Testing
- Single Vision Soft Contact Lens
- Where
- 4 sites in Canada, Portugal and 2 more
- Volunteers
- 83 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Astigmatism
Nomogram for Astigmatism Correction of KLEx
The goal of this clinical trial is to learn if nomogram could promote treatment outcomes in astigmatism correction. The main question it aims to answer is: does the nomogram could promote treatment outcomes in astigmatism…
- Trial name
- NCT07605221
- Testing
- nomogram
- Where
- China
- Volunteers
- 100 people
- Sponsor
- Tianjin Eye Hospital
Myopia, Hyperopia
Safety and Efficacy Study to Evaluate the Treatment of Both Near and Distance Vision in a Simultaneous Laser Procedure
By using a new software two consecutive laser treatments have been combined to correct the distance vision and to provide a near vision component in addition to the first treatment.
- Conditions
- Myopia, Hyperopia, Presbyopia, Refractive Error
- Trial name
- Supracor (NCT01322919)
- Testing
- Supracor
- Where
- Mexico
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- Technolas Perfect Vision GmbH
Myopia
Evaluate the Efficacy and Safety of CTO0308 in Pediatric Patients With Myopia
This study was to evaluate the superiority of the myopia progression control effect in the treatment group compared with the control group, evaluated by the change in spherical equivalent (SE) after 12 months of administration of…
- Trial name
- NCT07790640
- Testing
- CTO0308
- Where
- South Korea
- Volunteers
- 351 people
- Sponsor
- Taejoon Pharmaceutical Co., Ltd.
Myopia
The Immediate Effect of Defocus Spectacles On the Choroid Thickness Using Optical Coherence Tomography on Children
The purpose is to examine temporary changes in the subfoveal choroid thickness after removal and after resumed use of Defocus Incorporated Multiple Segment Spectacle Lenses (DIMS).
- Trial name
- TIDOCT (NCT06234189)
- Testing
- Defocus Incorporated Multiple Segment Spectacle Lenses (DIMS)
- Where
- Denmark
- Volunteers
- 16 people
- Sponsor
- Vejle Hospital
Aging
Heart Aging When Near Vision Difficulty Begins
Near vision deterioration during aging results from a decrease in accomodation amplitude (AA). Myocardial regeneration is limited, and cardiac aging is an independent risk factor for cardiovascular disease.
- Trial name
- NCT04362215
- Testing
- Subjective accomodation amplitude measurement
- Where
- Turkey (Türkiye)
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Kecioren Education and Training Hospital