Clinical trials: Axial Length
Anterior Segment of Eye, Axial Length
Agreement of Two OCT Biometers: A Pilot Study
The purpose of this study is to compare the measurements obtained with two different biometers, UNITY Dx and Anterion. In eye care, a biometer is a device that uses laser technology to take highly precise measurements of the…
- Conditions
- Anterior Segment of Eye, Axial Length, Biometrics Measurement
- Trial name
- NCT07782619
- Testing
- UNITY DX, ANTERION
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Alcon Research
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
Focus on Axial Length
The Effect of 0.01% Atropine Eye Drops on Axial Length and Refraction in Myopic Children Compared to a Control Group
In this study, atropine 0.01% eye drops will be given to myopic children once at night daily for 6 months as compared to a control group to see the effect on axial length and refraction
- Trial name
- NCT07456488
- Testing
- Atropine 0.01% eye drops
- Where
- Pakistan
- Volunteers
- 60 people
- Sponsor
- Liaquat National Hospital & Medical College
Visual Quality, Axial Length
The Influence of Axial Length on Visual Quality Following SMILE Surgery in Patients with High Myopia
This retrospective study aimed to investigate the subjective and objective visual outcomes following Small Incision Lenticule Extraction (SMILE) surgery in high myopic patients with varying axial lengths (AL).
- Conditions
- Visual Quality, Axial Length, High Myopia
- Trial name
- NCT06898164
- Testing
- This study does not involve any interventions
- Where
- China
- Volunteers
- 113 people, healthy volunteers welcome
- Sponsor
- yuhao shao
Axial Length, Eye, Myopia
Study on the Impact of Desk and Chair Adaptation Intervention on the Occurrence and Development of Myopia in Primary School Students
This study is a randomized controlled trial of a desk and chair adaptation intervention involving primary school students and their parents or primary caregivers.
- Conditions
- Axial Length, Eye, Myopia, Myopia Progression
- Trial name
- NCT06623760
- Testing
- Desk and chair adaptation interventions
- Volunteers
- 2,100 people, healthy volunteers welcome
- Sponsor
- Fangbiao Tao
Axial Length, Myopia
Study of the Intervention Effect of Outdoor Activity Period Patterns in Promoting Myopia Among Preschool Children
This study is a randomized controlled trial based on outdoor activity interventions at specific time periods, involving preschool children aged 4 to 5 years.
- Trial name
- NCT06607640
- Testing
- Increase outdoor activity time during specific time periods
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- Fangbiao Tao
Axial Length (AL), Anterior Chamber Deep (ACD)
A-mode vs PalmScan Ultrasonography: Biometric Measurements.
Ultrasonography has become a critical ancillary test in the clinical practice of ophthalmology. It is commonly used as a standardized method for assessing intraocular biometry.
- Conditions
- Axial Length (AL), Anterior Chamber Deep (ACD), Lens Thickness (LT)
- Trial name
- NCT00804869
- Testing
- PalmScan A2000 ultrasonography system (Micro Medical Devices, Calabasas, CA), Standard A-mode ultrasound (Eye Cubed™, Ellex, Adelaide, Australia).
- Where
- Mexico
- Volunteers
- healthy volunteers welcome
- Sponsor
- Asociación para Evitar la Ceguera en México
Myopia Progression, Axial Length, Eye
Low Dose Atropine Eye Drops in Myopic Egyptian Children
Previous Studies reported that low concentration atropine eye drops may be effective in increasing the choroidal blood flow and thickness and this slows myopia progression.
- Conditions
- Myopia Progression, Axial Length, Eye, Sclera Thickness
- Trial name
- LAMP (NCT06265454)
- Testing
- low dose atropine eye drops
- Where
- Egypt
- Volunteers
- 75 people
- Sponsor
- Ain Shams University
High Myopia, Axial Length
Repeated Low-Level Red-Light Therapy Shortens Axial Length
The purpose of this clinical trial is to investigate the incidence and magnitude of axial length shortening after repeated low-level red-light therapy in high myopia children and teenagers.
- Conditions
- High Myopia, Axial Length, Eye Diseases
- Trial name
- NCT05768152
- Testing
- RLRL
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- The Second People's Hospital of Foshan
Refractive Errors, Axial Length, Eye
Optical Biometry and Spherical Aberration in Ametropic and Emmetropic Eyes
Aberrations play a significant role in the visual process and can be divided in lower-order and higher-order aberrations. The former can be measured using the commercially available IOL Master (Carl Zeiss Meditec AG, Germany) and…
- Conditions
- Refractive Errors, Axial Length, Eye, Corneal Wavefront Aberration
- Trial name
- NCT01663597
- Where
- Austria
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna