Clinical trials: Ametropia
Eye Diseases, Ametropia
Comparison of Subjective Refraction Measurement With SiVIEW Software and by an Expert
Main objective Show that the equivalent sphere refraction measurements obtained by the SiVIEW software have no significant clinical difference with those obtained by an optometrist expert.
- Trial name
- NCT04185701
- Testing
- SiVIEW software, Expert
- Where
- France
- Volunteers
- 111 people
- Sponsor
- SiVIEW
Cataract, Presbyopia
Comparative Analysis of the Visual Performance and Patient Satisfaction After Cataract Surgery With Implantation of a Medicontur Monofocal (877PAY) or a Medicontur Extended Depth of Focus (877PEY) IOL
The purpose of this multi-center, prospective, randomized, comparative clinical investigation was to evaluate and compare the visual performance at far, intermediate and near distances, the presence of photopic phenomena and…
- Conditions
- Cataract, Presbyopia, Ametropia
- Trial name
- NCT06642779
- Testing
- VFQ- 25 (Visual Function Questionnaire), Optical Biometry, Slit lamps / Fundoscopy / Biomicroscopy
- Where
- 3 sites in Hungary
- Volunteers
- 64 people
- Sponsor
- Medicontur Medical Engineering Ltd
Ametropia
Safety and Acceptability of Using a Rewetting Drop With Contact Lens Wear
Testing the Safety and Acceptability of Using a Rewetting Drop with Contact Lenses
- Trial name
- NCT00691197
- Testing
- Carboxymethylcellulose sodium and Glycerin, Carboxymethylcellulose sodium
- Where
- United States
- Volunteers
- 246 people, healthy volunteers welcome
- Sponsor
- Allergan
Ametropia
Evaluation of Disinfecting Solutions and Protein Remover With a Silicone Hydrogel Lens
The purpose of this study is to determine if reduced lens deposits and increased comfort can be achieved by using Multipurpose disinfecting solutions (MPDS) in a no-rub format but in conjunction with an intensive cleaner, rather…
- Trial name
- NCT00754338
- Testing
- Alcon Opti-Free® RepleniSH® with Supraclens®, Alcon Opti-Free® RepleniSH®, B&L ReNu MultiPlus™
- Where
- Canada
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- University of Waterloo
Myopia, Ametropia
LED Low-Intensity Red Light for Myopia Control in Youth: Efficacy and Safety Study
The purpose of this clinical trial was to investigate the efficacy and safety of repetitive low-intensity single-wavelength red light from an LED light source in controlling myopia progression in children and adolescents.
- Trial name
- NCT07375589
- Testing
- Red light treatment with 1.6mW LED light source, Red light treatment with 0.001mW LED light source
- Where
- China
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Ametropia
Clinical Evaluation of HPT Treated Rigid Contact Lenses Made From Hexafocon A
This will be an up to six months, subject-masked, contralateral, parallel-group, randomised, daily wear study. All subjects will wear the Test lens in one eye and the Control lens in the other eye.
- Trial name
- NCT04525170
- Testing
- HPT treatment, untreated
- Where
- 2 sites in Germany
- Volunteers
- healthy volunteers welcome
- Sponsor
- Contamac Ltd
Ametropia
Evaluation of Monthly Replacement Lenses in Habitual Soft Contact Lens Wearers Who Report Frequent Digital Devise Use
To evaluate the clinical performance of two monthly silicone hydrogel contact lenses in habitual wearers of frequent replacement (FRP) lenses when worn for 1-month.
- Trial name
- NCT05166902
- Testing
- Lens A (comfilcon A lens), Lens B (lehfilcon A lens)
- Where
- 4 sites in United States, Canada
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia, Ametropia
Clinical Comparison of Two Daily Disposable Contact Lenses - Pilot Study 3
The purpose of this study is to evaluate the overall performance of PRECISION1™ contact lenses when compared to INFUSE™ contact lenses.
- Trial name
- NCT04942925
- Testing
- Verofilcon A contact lenses, Kalifilcon A contact lenses
- Where
- 4 sites in United States
- Volunteers
- 60 people
- Sponsor
- Alcon Research
Ametropia
Clinical Evaluation of Biomedics Monthly Sphere and Avaira Vitality Sphere
The aim of this study is to compare the short-term clinical performance of two sphere contact lenses.
- Trial name
- NCT06400914
- Testing
- Lens A (ocufilcon D), Lens B (fanfilcon A)
- Where
- Mexico
- Volunteers
- 44 people
- Sponsor
- CooperVision, Inc.
Ametropia
Prospective Study Evaluating Dry Eye in Patients Operated on for Ametropia by LASIK Surgery and Treated With REPADROP
LASIK is a refractive surgery technique widely used in France. Postoperatively, the classic treatment after LASIK consists of instilling drops to reduce dry eyes.
- Trial name
- PREPADROP (NCT04654455)
- Testing
- Describe the evolution of dry eye between 1 month and 3 months post-LASIK
- Where
- France
- Volunteers
- 10 people
- Sponsor
- Hospices Civils de Lyon
Ametropia
Study of Soft Contact Lens Use With 7 Day Extended Wear
To compare the safety and efficacy of the CVI silicone-hydrogel lens worn on an extended wear basis for a period of up to 7 days and 6 nights with the Acuvue 2 soft contact lenses.
- Trial name
- NCT00597467
- Testing
- VISA (comfilcon A) Silicone Hydrogel Soft contact lens, Acuvue 2 Soft Contact Lens
- Where
- 23 sites in United States
- Volunteers
- 460 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Ametropia
One-month Clinical Evaluation of Silicone Hydrogel Definitive 65 HPT Contact Lenses
Comparison of different contact lens materials.
- Trial name
- NCT02312323
- Testing
- Definitive 65 HPT contact lenses, Definitive 65 contact lenses
- Where
- 2 sites in Germany
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Contamac Ltd
Ametropia
Clinical Characterization of Symptomatic Populations
This is an unmasked, non-randomized, single arm, stratified, dispensing investigation of symptomatic and asymptomatic subject populations.
- Trial name
- NCT03319212
- Testing
- senofilcon A contact lenses
- Where
- 2 sites in United States, Canada
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Ametropia, Myopia
Clinical Investigation of Proclear® 1 Day and MyDay® Sphere Contact Lenses
The aim of this study is to evaluate and compare the performance of two soft contact lenses.
- Trial name
- NCT07104773
- Testing
- Control Lens (omafilcon A), Test Lens (stenfilcon A)
- Where
- Canada
- Volunteers
- 44 people
- Sponsor
- CooperVision International Limited (CVIL)
Astigmatism, Ametropia
Optimization for Toric Contact Lenses
The aim of this study is to evaluate the agreement between subjective and objective toric lens prescriptions.
- Trial name
- NCT07557030
- Testing
- Lens 1 ( stenfilcon A ), Lens 2 ( comfilcon A )
- Where
- United States
- Volunteers
- 29 people
- Sponsor
- CooperVision International Limited (CVIL)
Ptosis, Macular Degeneration
Comparing Vision Tests in a Virtual Reality Headset to Existing Analogues
The purpose of this study is to compare the results of vision tests that are algorithmically derived and delivered through a virtual reality headset with those delivered through the existing technology standards (eg.
- Conditions
- Ptosis, Macular Degeneration, Ametropia
- Trial name
- RTS1 (NCT04714424)
- Testing
- Virtual Reality Headset
- Where
- United States
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Icahn School of Medicine at Mount Sinai
Ametropia
Ocular Responses to Short and Long-term Lens Wear
The purpose of this study was to determine whether ocular surface sensitivity to pneumatic, mechanical and chemical stimulation would be affected by the use of the combination of a specific silicone hydrogel lens material with…
- Trial name
- NCT00722891
- Testing
- Purevision Lenses with ReNu Multiplus, Purevision Lenses with Optifree RepleniSH
- Where
- Canada
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Bausch & Lomb Incorporated
Ametropia
The Effects of Contact Lenses With Experimental Dye on Visual Function
This is a single-site, two-visit, contralateral, non-dispensing, randomized, controlled and subject-masked study to measure potential benefits of the new UV blocker.
- Trial name
- NCT03556579
- Testing
- senofilcon A with new UV blocker, senofilcon A
- Where
- United States
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Ametropia, Myopia
Clinical Performance Evaluation of Two Frequent Replacement Silicone Hydrogel Toric Contact Lenses
The primary objective of this study is to evaluate the axis orientation of LID226397 toric contact lenses.
- Conditions
- Ametropia, Myopia, Hyperopia, Astigmatism
- Trial name
- NCT05959200
- Testing
- Serafilcon A toric contact lenses, Senofilcon A toric contact lenses, CLEAR CARE
- Where
- 7 sites in United States
- Volunteers
- 92 people
- Sponsor
- Alcon Research
Myopia, Refractive Ametropia
Comparison of Two Rotational Alignment Methods for Astigmatism Correction in SMILE Surgery
Small incision lenticule extraction (SMILE) is a commonly used corneal refractive procedure for correcting myopia and myopic astigmatism.
- Trial name
- NCT07696468
- Testing
- Device-assisted cyclotorsion control during SMILE, Manual limbal marking-guided cyclotorsion adjustment during SMILE
- Where
- China
- Volunteers
- 52 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University