Clinical trials: Short-Sighted
Presbyopia, Near Vision
Comparative Study and Validation of New Methodologies for Measuring Addition
The aim of this research is to collect comprehensive data on a presbyopic population that may require near vision correction, in order to identify the most useful tests to accurately determine the value of an addition.
- Conditions
- Presbyopia, Near Vision, Refraction Error
- Trial name
- NCT06963138
- Testing
- Visual Acuity, Objective refraction, Standard Subjective refraction
- Where
- France
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Essilor International
Hyperopia, Myopia
Clinical Study of Visibility Tinted Clariti Contact Lens
The purpose of this study was to investigate the safety and efficacy of the Sauflon Clariti Monthly silicone hydrogel contact lenses with handling tint (Sauflon Pharmaceuticals Limited) by comparison with Air Optix Aqua silicone…
- Trial name
- NCT01996787
- Testing
- Air Optix Aqua, Clariti with Handling Tint
- Where
- United Kingdom
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Sauflon Pharmaceuticals Ltd
Cataract, Presbyopia
Objective and Subjective Outcomes of a Trifocal IOL in Eyes With Different AL
This prospective cohort study enrolled patients with implantation of a trifocal IOL. Only one eye of each patient was enrolled. Eyes were devided into three groups according the axial length (AL), including the short AL group…
- Conditions
- Cataract, Presbyopia, Lenses, Intraocular, Myopia
- Trial name
- NCT05431868
- Testing
- AT LISA tri 839MP (Carl Zeiss Meditec AG)
- Where
- China
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Myopia, Quality of Life
Functional Vision and Quality of Life in a Modern Society - With Emphasis on Myopia and Cerebral Visual Impairment Among Youth
Society has become increasingly digital, and many everyday services have been replaced by digital self-service solutions. This puts greater demands on our vision and our ability to interpret what we see.
- Trial name
- NCT07653074
- Testing
- ophthalmological examination
- Where
- Sweden
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Region Örebro County
Myopia, Refractive Errors
Effect of Repeated Low-Level Red-Light Therapy on Retinal Function and Structure
The purpose of this clinical trial is to evaluate the effect of repeated low-level red-light (RLRL) therapy on the retinal function and structure among myopic teenagers.
- Conditions
- Myopia, Refractive Errors, Eye Diseases, Retina; Change
- Trial name
- NCT05597397
- Testing
- RLRL
- Where
- China
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
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
Axial Length, Myopia
China Children Eye Study
The primary objective of this multi-center, observational study is to establish the reference ranges of axial length in Chinese children and adolescents.
- Conditions
- Axial Length, Myopia, Child Development
- Trial name
- CCES (NCT05770661)
- Where
- 2 sites in China
- Volunteers
- 30,000 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia, Refractive Error
Comparative Study of Cycloplegic Refraction and Subjective Refraction With Fogging in School Age Children
A thorough ophthalmic examination of a child must include a refraction and this is often done with cycloplegia. In our study, we aim to determine at which age group a non-cycloplegic refraction technique closely correlates with a…
- Trial name
- NCT00347347
- Where
- Singapore
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Dry Eye Syndromes
Bilateral, Masked Comparison of PEG-400 Based Artificial Tear vs. Systane for Dry Eye Signs, Symptoms & Refractive Regression Associated With Myopic Laser in Situ Keratomilieusis (LASIK).
This study will evaluate and compare 2 artificial tears in their ability to reduce post LASIK dry eye signs and symptoms. The secondary endpoint of this study is to evaluate refractive regression in these patients.
- Trial name
- NCT00620893
- Testing
- PEG- 400 based artificial tear, Systane
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Bp Consulting, Inc
Refractive Errors, Myopia
Correlation Between Preoperative Refraction and Anterior Segment Parameters With ICL Vault
This prospective non-comparative interventional study aims to analyse the pre-operative factors affecting the range of optimal ICL vaulting.
- Conditions
- Refractive Errors, Myopia, Myopic Astigmatism
- Trial name
- NCT05670626
- Testing
- Refractive Surgery
- Where
- Egypt
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Kasr El Aini Hospital
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.
Myopia
Dispensing Overnight Study in Lenses
The purpose of the study is to evaluate the fit and performance of an investigational soft contact lens in comparison with a currently marketed lens.
- Trial name
- NCT00349856
- Testing
- Biofinity
- Where
- Canada
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Waterloo
Myopia, Astigmatism
Post-approval Study of New Enrolment Patients Undergoing Bilateral Treatment With the VisuMax SMILE Procedure
The objective of the post-approval study (PAS) is to assess patient experience of visual symptoms 6 months after bilateral treatment with the VisuMax SMILE procedure as measured by a patient questionnaire.
- Trial name
- NCT05740293
- Testing
- VisuMax SMILE procedure for the reduction or elimination of myopia with astigmatism
- Where
- 7 sites in United States
- Volunteers
- 186 people, healthy volunteers welcome
- Sponsor
- Carl Zeiss Meditec, Inc.
Myopia
Peripheral Optics in Myopia and Orthokeratology
The primary objective of the current study is to investigate changes in peripheral refraction and aberration in children wearing orthokeratology lenses and single-vision spectacles.
- Trial name
- NCT00978679
- Testing
- Orthokeratology lenses, Spectacles
- Where
- China
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Refractive Error
The Evolutionary Model of Mild-to-moderate Myopia in China
Myopia has emerged as a major health issue in east Asia, because of its increasingly high prevalence in the past few decades (now 80-90% in school-leavers), and because of the sight-threatening pathologies associated with high…
- Trial name
- NCT02667509
- Where
- China
- Volunteers
- 852,441 people, healthy volunteers welcome
- Sponsor
- Sun Yat-sen University
Choroidal Retinal Neovascularization
Aflibercept Intravitreal Injection for Myopic Choroidal Neovascularization
The purpose of this study is to evaluate the clinical results of anti-VEGF intra-vitreal injections (IVT) in CNV secondary
- Trial name
- AflibxMyopia (NCT02033018)
- Testing
- Aflibercept Injection
- Where
- 2 sites in Brazil
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Instituto de Olhos de Goiania
Must be PRK Candidate
Safety and Efficacy of Lotemax Versus FML in Subjects Undergoing PRK for the Correction of Mild to Moderate Myopia, 3- Month Follow-up Study
STUDY OBJECTIVE: To evaluate and compare the safety and efficacy of (corneal Wound Healing and Intraocular Pressure) Fluorometholone and Loteprednol after photorefractive keratectomy (PRK) surgery.
- Trial name
- NCT02974387
- Testing
- Fluorometholone(FML), Loteprednol (Lotemax)
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Dr Salouti Eye Research Center
Myopia
Effect of MyopiaEd Messaging on Improving Eye-use Behavior and Myopia Control Among Primary School Students in China
Myopia represents a significant global public health challenge, with China experiencing particularly high myopia prevalence among children and adolescents.
- Trial name
- NCT07211893
- Testing
- Send myopia-related health education message
- Volunteers
- 1,330 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Myopia, Astigmatism
Comparison of Contoura Vision Outcomes Programmed Using the Manifest Refraction Verses Using Phorcides Planning Software in Patients With Oblique Astigmatism
The objective is to compare the percentage of monocular UDVA -0.1 logMAR (20/16) outcomes for each planning strategy (Phorcides and manifest refraction) at the 3-month post operative visit.
- Trial name
- NCT05888337
- Testing
- Contoura LASIK with Phorcides planning strategy, Contoura LASIK with manifest refraction planning strategy
- Where
- United States
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Bismarck Lasik
Hyperopia, Myopia
A Phase 1/2 Crossover Study to Assess EXP039 for Myopia or Hyperopia
Assess the Safety, Pharmacodynamics, and Efficacy of EXP039 Ophthalmic Solution in Participants with Myopia or Hyperopia
- Trial name
- NCT04883996
- Testing
- 1% EXP039, Saline control
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Canyon City Eyecare