Clinical trials: Visual Acuity
Oral Proprioceptive Sensitivity and Upper Limb Kinesthetic Acuity
Oral Proprioceptive Sensitivity and Upper Limb Kinesthetic Acuity: A Pilot Study
The goal of this observational study is to investigate whether differences in oral proprioceptive sensitivity are associated with differences in kinesthetic acuity of the upper limbs in children.
- Trial name
- NCT07854314
- Testing
- Upper-Limb Kinesthetic Acuity Assessment, Effect of Auditory Stimulation on Visual Perception, Oral Proprioceptive Sensitivity Assessment
- Where
- Spain
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Sophie Román Richon
Keratoconus
Preoperative Corneal Measurements Estimate the Corrected Distance Visual Acuity After Corneal Cross-linking
This study aims to determine if objective markers describing corneal optical density (COD), thinnest corneal thickness (TCT), anterior (ARC), and posterior (PRC) surface radii over the 3mm thinnest region of the cornea could…
- Trial name
- NCT06522789
- Testing
- corneal cross-linking procedure
- Where
- North Macedonia
- Volunteers
- 124 people, healthy volunteers welcome
- Sponsor
- Sistina Ophthalmology Hospital
Vertigo, Headache
Study of Oculomotor Dysfunction Leading to Children Vertigo
The eye movements of vergence allow binocular vision whatever the viewing distance or the body movements are and the perception of depth. Vergence dysfunction can lead to erroneous visual sensation of movements.
- Conditions
- Vertigo, Headache, Anomaly of Vergence System, Accommodation Disorders
- Trial name
- VERVE (NCT01153789)
- Testing
- orthoptic rehabilitation, Orthoptic diagnostic
- Where
- France
- Volunteers
- 183 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Corneal Ulcer, Eye Infections, Fungal
Mycotic Ulcer Treatment Trial I
The purpose of this study is to determine if natamycin or voriconazole results in better visual outcomes in fungal corneal ulcers, especially visual acuity.
- Trial name
- MUTT I (NCT00996736)
- Testing
- Natamycin, Voriconazole
- Where
- 3 sites in United States, India
- Volunteers
- 323 people
- Sponsor
- University of California, San Francisco
Child, Motor Activity
CHAMPS Eye Study - Myopia and Retinal Vascular Geometry in Relation to Physical Activity
An increasingly physical inactive lifestyle in the Western World has led to a higher number of lifestyle -related diseases. The consequences are now already present in childhood with an increased prevalence of overweight…
- Conditions
- Child, Motor Activity, Myopia
- Trial name
- NCT02346006
- Testing
- More physical activity.
- Volunteers
- 307 people, healthy volunteers welcome
- Sponsor
- Odense University Hospital
Visual Impairment, Amblyopia Suspect
DigiVis: Self-testing Vision App for Telephone Consultations
This trial aims to assess the accuracy and test-retest variability of a new digital app which enables community visual acuity testing without requirement of an trained examiner.
- Trial name
- NCT04482387
- Testing
- DigiVis visual acuity app
- Where
- United Kingdom
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Cambridge University Hospitals NHS Foundation Trust
Myopia
Efficacy of Chinese Ocular Exercise on Visual Acuity and Ocular Accommodation in Myopic Teenager
To assess whether Chinese ocular exercise is effective in altering distant and near visual acuity, ocular accommodation and visual symptoms in myopic teenager, and thus might have the possibility of slowing myopia progression in…
- Trial name
- NCT01756287
- Testing
- Chinese ocular exercise
- Where
- China
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
Retinal Detachment
Correlation Between OCT and mFERG Findings With VA After Vitrectomy Surgery for Retinal Detachment
Correlation between optical coherence tomography and multifocal electroretinogram findings with visual acuity after vitrectomy surgery for Retinal detachment.
- Trial name
- NCT05993208
- Testing
- optical coherence tomography,multifocal electroretinogram. VA measurment
- Where
- Egypt
- Volunteers
- 40 people
- Sponsor
- New Valley University
Retinopathy of Prematurity (ROP), Premature Birth
Long-term Ophthalmic Outcomes in Ex-premature Infants
There is limited knowledge on ophthalmological outcomes in the adult population that was born prematurely. This study aims to evaluate the ophthalmic outcomes of ex-premature infants that have reached adolescence or adulthood.
- Trial name
- LTOO-XP (NCT06649513)
- Testing
- eye drops (Tropicamid)
- Where
- Netherlands
- Volunteers
- 210 people
- Sponsor
- Erasmus Medical Center
Refractive Error Correction, Visual Acuity
Metric-Optimized Spectacle Prescriptions for Children With Down Syndrome
This study seeks to determine whether glasses prescriptions determined from computer analysis of detailed images of the eyes provide better vision outcomes for children with Down syndrome than prescriptions determined using…
- Trial name
- NCT07490444
- Testing
- Metric-optimized spectacles, Routine Clinical Spectacles
- Where
- United States
- Volunteers
- 24 people
- Sponsor
- Ohio State University
Amblyopia, Anisometropia
Dichoptic Virtual Reality Therapy for Amblyopia in Adults
This was a randomized, masked, controlled study of the effect of a virtual reality, binocular, 3-dimensional video game on visual acuity and stereopsis in adult patients with amblyopia.
- Conditions
- Amblyopia, Anisometropia, Strabismus
- Trial name
- NCT02246556
- Testing
- Dichoptic therapy, Patching therapy, Dioptic (non-dichoptic) therapy
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- University of California, San Francisco
Ophthalmopathy, Artificial Intelligence
Validation of the Utility of an Intelligent Visual Acuity Diagnostic System for Children
Visual development during early childhood is a vital process. Examining the visual acuity of children is essential for the early detection of visual abnormality, but performing such an assessment in children is challenging.
- Trial name
- NCT03766737
- Testing
- An intelligent visual acuity diagnostic system for children
- Where
- China
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Sun Yat-sen University
Visual Impairment, Amblyopia
Developing Better Computerised Vision Tests (CVTV)
Clinical vision measurements usually involve printed charts with an eye care professional interpreting patient responses to generate a score. Those scores determine the need for or outcome of treatment.
- Conditions
- Visual Impairment, Amblyopia, Macular Degeneration, Ophthalmic Disease
- Trial name
- CVTV (NCT06224751)
- Testing
- Near logMAR letter acuity, Near LogMAR word acuity, Red Green Stereoacuity
- Where
- United Kingdom
- Volunteers
- 550 people, healthy volunteers welcome
- Sponsor
- Guy's and St Thomas' NHS Foundation Trust
Eye Change
Correlation Between Corneal Topographic Patterns and Refractive Status Of The Eye in Sohag City,Egypt
To evaluate corneal topographic pattern \& its correlation with refractive status of the eye .
- Trial name
- NCT05626075
- Testing
- Using Oculus Pentacam® which is s a rotating Scheimpflug camera. The rotational measuring procedure generates Scheimpflug images in three dimensions.
- Where
- Egypt
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Sohag University
Monochromatic, L- and S-cone Modulation Only
Evaluating How Well Different Types of Light-sensitive Cells in the Eye Contribute to Its Focusing Ability
In this experiment, subjects will view shapes on a screen with varying colors and be asked to focus their eyes on the shapes. The shapes will look as though they are jumping to random distances away from the eye.
- Conditions
- Monochromatic, L- and S-cone Modulation Only, L- and M-cone Modulation Only, M and S-cone Modulation Only
- Trial name
- NCT07691463
- Testing
- Color
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Rochester Institute of Technology
Visual Spatial Processing
Accuracy of Mobile-Based Vision Charts.
Analyzing the accuracy of mobile-based distant vision charts in clinical practice as an economic alternative for standard vision charts.
- Trial name
- NCT05251155
- Testing
- Distant best corrected visual acuity assessment
- Where
- Egypt
- Volunteers
- 288 people, healthy volunteers welcome
- Sponsor
- Benha University
Amblyopia, Amblyopia Strabismic
Effectiveness of tDCS in Paediatric Amblyopia.
The goal of this randomized, double-blind clinical trial is to determine whether transcranial direct current stimulation (tDCS) can effectively and safely improve vision in children aged 4-14 years with strabismic or…
- Conditions
- Amblyopia, Amblyopia Strabismic, Visual Acuity, Stereoscopic Vision
- Trial name
- tDCS (NCT07547670)
- Testing
- tDCS
- Where
- Spain
- Volunteers
- 100 people
- Sponsor
- Universidad de Murcia
Ophthalmic Disorders
Co-designing and Evaluating a Real-world Implementation Model for Remote Consultation with Vision Self-testing.
This study aims to involve the public, patients and National Health Service (NHS) staff in co-designing a scalable, inclusive and sustainable implementation model for ophthalmic remote consultation with vision self-testing (the…
- Trial name
- ReVise (NCT05941182)
- Testing
- online questionnaires
- Where
- 2 sites in United Kingdom
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Cambridge University Hospitals NHS Foundation Trust
Vision Disorder
A Novel Acuity Testing Method
The purpose of this protocol is to develop a valid, reliable, better standardized, and more efficient test of visual acuity (ability to see fine details) for use in clinical trials.
- Trial name
- NCT00013936
- Where
- United States
- Volunteers
- 500 people
- Sponsor
- National Eye Institute (NEI)
Amblyopia, Amblyopia, Anisometropic
Stochastic Resonance Applied to Amblyopia Training and the Plasticity of Brain
The prevalence of Taiwan's population with amblyopia is 2-5%. Amblyopia affects the daily life and learning ability. The human visual system can be developed normally with exposure of clear images on the retina, which often drive…
- Trial name
- NCT04213066
- Testing
- Portable tablet
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- National Cheng-Kung University Hospital