Clinical trials: Refractive Errors, open to volunteers
Myopia, High-Grade, Myopia; Refractive Error
AOSLO-Based Precise Measurement of Retinal Hemodynamics: Development and Application Assessment
Changes in retinal hemodynamics play a key role in the development of various eye diseases. Currently, mainstream hemodynamic evaluation techniques have low resolution and poor measurement accuracy, limiting their widespread…
- Trial name
- NCT07051317
- Volunteers
- 120 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Refractive Disorders
Evaluation of the Effects of Virtual Reality on Preoperative Anxiety in Refractive Surgery
The objective of this study is to determine to what extent the use of a software application prior to refractive surgery involving multisensory immersion (visual and auditory) in a hypnotic and relaxing sound and visual…
- Trial name
- ERVAN (NCT07050498)
- Testing
- Virtual reality, Usual Care Group
- Where
- France
- Volunteers
- 68 people
- Sponsor
- GCS Ramsay Santé pour l'Enseignement et la Recherche
Refractive Assessment, Refractive Disorders
Algorithm-assisted Subjective Refraction Program Dedicated to Children
Current refraction assessment in children is dependent on the Eye Care Specialist and lacks standardization. Essilor has developed new algorithm assisted subjective refraction software dedicated to children of 6-12 years old and…
- Conditions
- Refractive Assessment, Refractive Disorders, Hyperopia and Myopia, Astigmatism
- Trial name
- NCT07046065
- Testing
- Non-cycloplegic Objective refraction, Non-cycloplegic conventional subjective refraction, Non-cycloplegic subjective refraction (Kids refraction software vA with Vision-R™)
- Where
- Portugal
- Volunteers
- 166 people, healthy volunteers welcome
- Sponsor
- Essilor International
Ophthalmic Diseases (Specific Types Not Restricted), Cataract
Research on a New Intelligent Mobile Screening and Diagnosis Pattern for Ocular Diseases
The global distribution of primary ophthalmic medical resources is uneven, and the traditional eye disease screening model has problems such as low efficiency, high cost and limited coverage.
- Conditions
- Ophthalmic Diseases (Specific Types Not Restricted), Cataract, Refraction Error, Diabetic Retinopathy (DR)
- Trial name
- NCT07003165
- Volunteers
- 15,000 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Refractive Surgery, Myopia; Refractive Error
Clinical Study of SMILE 4.0-VISULYZE in Correcting Refractive Errors
The aim of this study is to further optimize the surgical input parameters for patients undergoing Small Incision Lenticule Extraction (SMILE) using the regression model established by the SMILE 4.0-VISULYZE system, thereby…
- Trial name
- NCT06982807
- Testing
- Group 4.0-VISULYZE, traditional group
- Where
- 2 sites in China
- Volunteers
- 600 people
- Sponsor
- Affiliated Hospital of Nantong University
Ametropia, Myopia; Refractive Error
The Objective of This Study is to Evaluate the Perfomance of a Photorefraction Device for Screening Ametropia in Children. Eligible Participants Will Undergo Multiple Refractive Error Measurements, Visual Acuity and Strabismus Assessments During a Single Evaluation Visit.
The goal of this clinical trial is to evaluate the performance of a photorefraction screener in terms of sensibility, sensitivity and accuracy on children aged 3 to 8 y.o.
- Conditions
- Ametropia, Myopia; Refractive Error, Myopia; Astigmatism
- Trial name
- NCT06882408
- Testing
- Photorefraction device under investigation, Comparator device, Tabletop auto-refractometer, Comparator device, portable photorefraction device
- Where
- 2 sites in France
- Volunteers
- 315 people, healthy volunteers welcome
- Sponsor
- Essilor International
Myopia
The Beijing Childhood Eye Study
Axial myopia has emerged as the leading cause of irreversible vision loss in East Asia, driven by its progression to sight-threatening complications including myopic macular degeneration, retinal detachment, open-angle glaucoma…
- Trial name
- BCES (NCT06931444)
- Where
- China
- Volunteers
- 3,760 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
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, Refractive Errors
Real-World Study of Myopia Prevention and Control in Children
This prospective, school-based cohort study aims to enroll approximately 15,000 primary school students from multiple districts in Shanghai, China and to observe the outcomes on myopia prevention and control in children with…
- Conditions
- Myopia, Refractive Errors, Children, Cohort
- Trial name
- NCT06849895
- Where
- China
- Volunteers
- 15,000 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia, Refractive Error - Myopia
Minimum Power and Frequency of Repeated Low-level Red-light to Effectively Control Myopia Progression
To explore the minimum power and frequency of Repeated Low-level Red-light (RLRL) to control myopia progression in low-myopic children aged 8-10 years, and the rebound effect of low-myopic children after discontinuation of RLRL…
- Conditions
- Myopia, Refractive Error - Myopia, Choroidal Thickness, Retina
- Trial name
- NCT06717048
- Testing
- Repeated Low-level Red-light, Red LED
- Where
- China
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Refractive Surgery, Refractive Error - Myopia
Evaluate the Safety and Effectiveness of the AccuraSee™ IOPCL for Secondary Implantation in the Capsular Bag to Improve Near and/or Intermediate Vision Following Previous Cataract Surgery
This is a study to evaluate the safety and effectiveness of the AccuraSee™ intraocular pseudophakic capsular lens (IOPCL) to improve near and/or intermediate vision following previous cataract surgery.
- Trial name
- NCT06625749
- Testing
- Accurasee™ IOPCL
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- OnPoint Vision Inc
Refractive Errors
Effect of Colour Temperature of Reading Lamp on Refractive Error Development
This is a 12-month longitudinal randomized controlled trial aiming to evaluate the effect of colour temperature of reading lamp on refractive error development.
- Trial name
- NCT05733182
- Testing
- 3000K Reading lamp, 4500K Reading lamp, 6500K Reading lamp
- Where
- Hong Kong
- Volunteers
- 798 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
High Myopia
Wuhan High Myopia Study
The study aims to observe the long-term changes of ocular（especially fundus） structure and visual function in patients with high myopia, so as to provide evidence for the prevention, diagnosis and prognosis of high myopia.
- Trial name
- LOVE-WH (NCT06162234)
- Testing
- observational
- Where
- China
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Renmin Hospital of Wuhan University
Blindness,Visual Impairment, Refractive Error, Cataract, High Myopia, Aging
Shanghai Eye Study for Adults
Blindness and visual impairment severely impact the visual health and life quality of people, particularly the 2.566 million senior citizens aged at 65 and above in Shanghai.
- Trial name
- SESA (NCT03455478)
- Testing
- spectacles
- Where
- China
- Volunteers
- 1,000,000 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center