Clinical trials: Error, Refractive
Visual Acuity, Refractive Errors
Pre-symptomatic Screening of Visual Acuity in Pre-school Students
The present research process is a prospective, non-interventional clinical study that will be conducted -under the auspices of the Democritus University of Thrace (DUTH)- in the pre-school students of the city of Alexandroupolis…
- Conditions
- Visual Acuity, Refractive Errors, Low Vision, Vision Disorders
- Trial name
- NCT05835193
- Testing
- Diagnostic Test: Distance Visual Acuity Examination
- Where
- Greece
- Volunteers
- 1,098 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Myopia
Assessment of Measurement Variability Across Automated Biometry Devices
This is a non-interventional prospective, comparative study of white-to-white, corneal thickness, and anterior chamber depth measurements as taken on the Orbscan II compared to the IOL Master 700 (Zeiss), IOL Master 500 (Zeiss)…
- Trial name
- NCT06045325
- Testing
- Orbscan II, IOL Master 700, IOL Master 500
- Where
- United States
- Volunteers
- 204 people, healthy volunteers welcome
- Sponsor
- Berkeley Eye Center
Presbyopia, IOL, Cataract
Evaluation of the Visual Acuity Curves of an Enhanced Monofocal Intraocular Lens
The primary objective of this study is to evaluate postoperative visual acuity curves in pseudophakic patients following unilateral or bilateral implantation of the enhanced monofocal TECNIS Eyhance IOL, using the DDARTVC.
- Trial name
- IOL-VAC (NCT07439835)
- Testing
- Phacoemulsification with enhanced monofocal IOLs
- Where
- Greece
- Volunteers
- 62 people
- Sponsor
- Democritus University of Thrace
Myopia
Using Contact Lenses and Spectacle Lenses as Myopia Interventions.
Effect of alternating contact lenses and spectacles for myopia control.
- Trial name
- NCT07845721
- Testing
- Test Spectacle Lens & Contact Lens, Control Spectacle Lens & Contact Lens
- Where
- 2 sites in Canada, United Kingdom
- Volunteers
- 58 people
- Sponsor
- CooperVision International Limited (CVIL)
Myopia
VEP for Assessment SMILE Visual Quality
To evaluate the subjective and objective postoperative visual quality employing pattern visual evoked potential (P-VEP) following small incision lenticule extraction (SMILE).
- Trial name
- SMILE VEP (NCT07889752)
- Testing
- small incision lenticule extraction (SMILE)
- Where
- China
- Volunteers
- 84 people
- Sponsor
- yuhao shao
Myopia
The Effect of Final Exam Preparation on Anxiety Level, Self-Perception, Ocular Symptoms, Accommodation and Vergence in Myopia
To evaluate the effects of exam preparation on anxiety level, self perception, ocular symptoms and oculomotor responses in myopes
- Trial name
- NCT00405106
- Where
- United States
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Southern California College of Optometry at Marshall B. Ketchum University
Myopia
Safety and Tolerability Evaluation of PRO-230 Ophthalmic Solution
Phase I Study to evaluate safety and tolerability of PRO-230 (atropine sulphate 0.05%) ophthalmic solution through evaluation of incidence of non-expected adverse events (AE), photophobia, pupillary diameter, incidence of…
- Trial name
- PRO-230 (NCT05481489)
- Testing
- Atropine Sulfate
- Volunteers
- healthy volunteers welcome
- Sponsor
- Laboratorios Sophia S.A de C.V.
Myopia
Projected Peripheral Defocus Using a Wearable Device
Acucela Inc. intends to develop a medical device to significantly halt or reverse myopic progression, which is a significant public health concern across the world, especially in Asian demographics.
- Trial name
- NCT04415684
- Testing
- Active projection of defocused image in the peripheral visual field (eSpecs, Acucela Inc.), No Active projection of defocused image in the peripheral visual field (eSpecs, Acucela Inc.)
- Where
- United States
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Kubota Vision Inc.
Myopia, Strabismus
Evaluation of a County-Based Eye Health Service Model in Rural Chinese Children
This project proposes to conduct a prospective, multicenter registry study in rural China to evaluate, under real-world conditions, the implementation effectiveness of an integrated child eye health service model centered at the…
- Conditions
- Myopia, Strabismus, Eye Health
- Trial name
- NCT07547748
- Testing
- School-based Eye Health Screening
- Where
- China
- Volunteers
- 20,000 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Myopia
Assessing the Performance of Lotrafilcon A Lenses During a Three Month Period
The purpose of this trial is to assess the performance of an investigational contact lens over a three month period.
- Trial name
- NCT00933166
- Testing
- Lotrafilcon A contact lens
- Volunteers
- 169 people
- Sponsor
- CIBA VISION
Refractive Error, Myopia
A Comparison of Two Daily Disposable Contact Lenses.
This study seeks to evaluate the clinical fitting performance of a new daily disposable contact lens to an existing daily disposable contact lens.
- Trial name
- NCT00721500
- Testing
- etafilcon A, narafilcon A
- Where
- United Kingdom
- Volunteers
- 25 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia, Myopia Progression
The Effectiveness and Safety of Two Low-concentration Atropine Sulfate Eye Drops (0.01%/0.02%) for Delaying the Pediatric Myopia Progression
The clinical trial aims to test the effectiveness and safety of two low-dose atropine sulfate eye drops for delaying myopia progression in children and adolescents.
- Trial name
- NCT06708156
- Testing
- Atropine sulfate eye drops 0.01%, Atropine sulfate eye drops 0.02%
- Where
- 25 sites in China
- Volunteers
- 606 people
- Sponsor
- Oupushifang Pharmaceutical Technology Co., Ltd.
Refractive Errors
Clinical Evaluation of Two Monthly Contact Lenses
The purpose of this study is to explore overall vision with BIOFINITY® ENERGYS™ contact lenses as compared to BIOFINITY® contact lenses after one week of wear.
- Trial name
- NCT03459131
- Testing
- Comfilcon A with Digital Zone Optics™ contact lenses, Comfilcon A contact lenses
- Where
- United States
- Volunteers
- 15 people
- Sponsor
- Alcon Research
Myopia, Refractive Errors
The Effect of the Free-toroidal Design Lenses on the Subjective Visual Quality in the Myopic Population
A prospective, self-control, double-blind design was conducted in Tianjin. Two hundred participants were assigned to wear two kinds of spectacle glasses.
- Trial name
- NCT05684302
- Testing
- The free-toroidal design lenses
- Where
- China
- Volunteers
- 200 people
- Sponsor
- Tianjin Eye Hospital
Myopia
Performance Comparison Between Comfilcon A and Senofilcon C Lenses
The aim of this study is to determine the clinical performance of comfilcon A in comparison to senofilcon C.
- Trial name
- NCT02920957
- Testing
- comfilcon A, senofilcon C
- Where
- 5 sites in United States
- Volunteers
- 88 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia
DW Evaluation of Lotrafilcon B Lenses in a Modified Design
The purpose of this study is to demonstrate that Lotrafilcon B AIR OPTIX® AQUA sphere modified design lenses are noninferior to Lotrafilcon B AIR OPTIX® AQUA in overall lens fit by comparing the percent of subjects satisfying the…
- Trial name
- NCT02157909
- Testing
- Lotrafilcon B sphere modified design contact lenses, Lotrafilcon B sphere contact lenses
- Volunteers
- 134 people
- Sponsor
- Alcon Research
Refractive Errors, Ametropia
Clinical Comparison of Two Daily Wear Frequent Replacement Silicone Hydrogel Soft Contact Lenses
The primary objective of this study is to evaluate the overall performance of an investigational silicone hydrogel lens when compared to ACUVUE OASYS® with HYDRACLEAR® PLUS (AOHP).
- Trial name
- NCT04532099
- Testing
- Lehfilcon A contact lenses, Senofilcon A contact lenses, Comfilcon A contact lenses
- Where
- 4 sites in United States
- Volunteers
- 132 people
- Sponsor
- Alcon Research
Myopia
Side Effects of Atropine (SEA) Study
This study will perform several objective and subjective measurements of the eye and vision before and after a week of using 0.01% concentration atropine drops.
- Trial name
- SEA (NCT03593044)
- Testing
- 0.01% concentration atropine drops
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Jeffrey J. Walline, OD PhD
Visual Acuity, Astigmatism
LFR-260 vs Traditional Phoropter in Visual Acuity Testing
The purpose of this study is to establish if LFR-260 (investigational device) is not inferior in effectiveness to a traditional phoropter (control device) when applied in visual acuity test in subjects undergoing a full routine…
- Conditions
- Visual Acuity, Astigmatism, Anisometropia
- Trial name
- NCT05259163
- Testing
- LFR-260 portable phoropter, Traditional phoropter (SOC)
- Where
- 2 sites in United States
- Volunteers
- 112 people, healthy volunteers welcome
- Sponsor
- Evolution Optiks Limited
Myopia, Progressive
Contact Lens and Myopia Control in Optometry School Students
The purpose of the study is to determine the effect of Natural View Multifocal lenses, a soft multifocal lens, on retardation of myopia in an optometric student population. Close up work (i.e.
- Trial name
- NCT04334369
- Testing
- Proclear Single Vision Contact Lenses manufactured by CooperVision, Proclear Multifocal Contact Lenses manufactured by CooperVision
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Jeff Rabin
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