Clinical trials: Cycloplegic Refraction
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
General Anesthesia
Comparison of Refraction Measurments in Children Under General Anesthesia, With and Without Cycloplegic Drops
Assessment of refraction measurements in children under general anesthesia, with or without cyclopelgic eye-drops
- Trial name
- NCT02459600
- Testing
- instulling cyclopentolate drops in the eye
- Where
- Israel
- Volunteers
- 20 people
- Sponsor
- Soroka University Medical Center
2WIN-S Portable Refractor
Comparing Preschool-Aged Refractive Measurements and Amblyopia Risks Using the 2WIN-S Portable Refractor with Vision Screening by Cycloplegic Refraction in Bangkok
The goal of this diagnostic test is to compare the results of refraction and amblyopia risks between using 2WIN-S portable refractor and cycloplegic refraction in pre-school age.
- Trial name
- NCT06148519
- Testing
- 2WIN-S portable refractor
- Where
- Thailand
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Department of Medical Services Ministry of Public Health of Thailand
Cycloplegic Paralysis of Accommodation
Assessing Patient Comfort, Anxiety, and Satisfaction During CR Comparing Conventional Drops With ROC
This study aims to compare the efficacy of conventional cycloplegic agents, such as cyclopentolate, with rapid-onset cycloplegics, like a combination of tropicamide and phenylephrine, in reducing patient anxiety and discomfort…
- Trial name
- NCT06914063
- Testing
- Rapid-Onset Cycloplegic Drops, Conventional Cycloplegic Drops
- Where
- Pakistan
- Volunteers
- 74 people
- Sponsor
- Superior University
Cycloplegia, Refractive Errors
Cycloplegic Refraction in Pediatric Patients With Esotropia
The primary outcome of this study is to compare cyclopentolate 1% and tropicamide 1% for cycloplegic refractions in pediatric populations with esotropia.
- Conditions
- Cycloplegia, Refractive Errors, Esotropia, Vision Disorders
- Trial name
- NCT06077682
- Testing
- Cyclopentolate, Tropicamide
- Where
- 2 sites in Jordan, Qatar
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Islamic Hospital, Jordan
Cycloplegia
Cycloplegic Refraction Among Children
The primary outcome of this study is to compare cyclopentolate 1% and tropicamide 1% for cycloplegic refractions in pediatric populations.
- Trial name
- NCT05442801
- Testing
- Cyclopentolate, Tropicamide
- Where
- Jordan
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Islamic Hospital, Jordan
Refractive Errors, Cycloplegic Refraction
ML Models Predicting Cycloplegic Refractive Error Based on Non-Cycloplegic Parameters in Myopic Adults
This study presents a machine learning model that predicts cycloplegic refraction in adults with myopia using standard non-cycloplegic eye measurements, aiming to reduce the need for cycloplegic drops while still identifying…
- Conditions
- Refractive Errors, Cycloplegic Refraction, Accommodation
- Trial name
- NCT07690813
- Testing
- Machine learning model for predicting cycloplegic refraction
- Where
- China
- Volunteers
- 2,500 people
- Sponsor
- Second Affiliated Hospital of Nanchang University
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
Pupillary Dilation Effect During Cycloplegic Refraction
Comparing Efficacy and Safety of CTO0303 in Pediatric Subjects
This is a prospective randomized study compared with active control arm.
- Trial name
- NCT06609525
- Testing
- CTO0303-A, CTO0303-B, CTO0303-C
- Where
- South Korea
- Volunteers
- 156 people, healthy volunteers welcome
- Sponsor
- Taejoon Pharmaceutical Co., Ltd.
Refractive Errors
A New More Efficient Cycloplegia Scheme
The purpose of this study is to determine whether tropicamide + phenylephrine cyclopentolate + applied for once waiting 30 minutes to retinoscopy (new scheme) is not inferior to apply cyclopentolate alone and wait 45 minutes to…
- Trial name
- NCT02177539
- Testing
- Cyclopentolate, Cyclopentolate+tropicamide+phenylephrine
- Where
- Chile
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Pontificia Universidad Catolica de Chile
Children Aged 3-5 Years, Vision Screening
Shared Reading for Pediatric Ophthalmic Education
We use generative AI to make personalized books for young children about going to the eye doctor. We want to see if reading these stories helps kids feel more comfortable and improves their overall experience at the clinic.
- Conditions
- Children Aged 3-5 Years, Vision Screening, Cycloplegic Refraction
- Trial name
- NCT07590791
- Testing
- Generative AI-customized educational book, standard printed educational leaflet, Commercially available children's book
- Where
- Taiwan
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Mackay Memorial Hospital
Cycloplegic Refraction
Efficacy and Safety of Cyclopentolate Microdrops for Cycloplegic Refraction in Children
The purpose is to test the hypothesis that microdrop instillation of cyclopentolate 1% is non-inferior to standard of care, i.e., standard drop instillation of cyclopentolate 1%.
- Trial name
- NCT06885242
- Testing
- Microdrop instillation of cyclopentolate 1%, Standard drop instillation of cyclopentolate 1%
- Where
- Greece
- Volunteers
- 63 people
- Sponsor
- Aristotle University Of Thessaloniki
Amblyopia
Is Non-cycloplegic Photorefraction Applicable for Screening Refractive Risk Factors of Amblyopia?
Purpose: : This study was performed to compare the accuracy of non-cycloplegic photorefraction with cycloplegic refraction in detection of refractive amblyopia risk factors and determine some corresponding beneficial cut points.
- Trial name
- NCT01308307
- Testing
- photorefraction
- Where
- Iran
- Volunteers
- 185 people
- Sponsor
- Shahid Beheshti University of Medical Sciences