A Prospective Clinical Study to Evaluate the Repeatability of the Visibly Vision Test
1 other identifier
interventional
25
1 country
1
Brief Summary
The study is a prospective, multi-center, single-arm, non-randomized, non-blinded, observational study to evaluate the test-retest reliability of the Visibly Vision Test. Additionally, observational data will be collected to understand whether the subject performs the set-up process correctly and subject comprehension of the patient labeling will also be evaluated.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started Mar 2019
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
March 4, 2019
CompletedFirst Submitted
Initial submission to the registry
March 5, 2019
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 25, 2019
CompletedStudy Completion
Last participant's last visit for all outcomes
March 25, 2019
CompletedFirst Posted
Study publicly available on registry
February 6, 2025
CompletedFebruary 6, 2025
January 1, 2025
21 days
March 5, 2019
January 31, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Test-retest variability (repeatability) of the Visibly Vision Test in the measurement of refractive error as assessed by the repeatability standard deviation using the Visibly software numerical outputs of estimated refractive error/correction.
The refractive error measurements will be those given by the Visibly software numerical outputs of estimated refractive error/correction. For each component of the refractive error measured in diopters (sphere, cylinder, and spherical equivalent), the homogeneous repeatability will be assessed using repeated measurements within study eyes.
Retest conducted between four and 72 hours after initial test.
Secondary Outcomes (1)
Collection of subject comprehension of critical aspects of patient labeling using subject response forms.
Performed immediately after initial test completion
Study Arms (2)
Cohort 1
OTHERWithout using an available refractive correction and whose refractive error is no greater than -1.00D of myopia (spherical component in minus cylinder format) and with no greater than -2.00D of astigmatism in either eye
Cohort 2
OTHERWith prior correction of no greater than -6.00D of myopia (spherical component in minus cylinder format) and require a spherical (non-astigmatic) over-refraction of no more than ±1.00 D in either eye
Interventions
The Visibly Vision Test is used as a digital self-administered device to measure visual acuity and to subjectively measure refractive value for a patient's eye to determine the optical prescription for the conditions of myopia and astigmatism
Eligibility Criteria
You may qualify if:
- Male or female, age 22 to 55 years at the time of consent;Recent (within 24 months) in-person comprehensive eye examination with a licensed eyecare professional and have prior prescription values (sphere, cylinder, axis) available;Subject must have either documented recent refractive error not greater than -1.00D of myopia and no greater than -2.00D astigmatism in either eye or documented prior correction no greater than -6.00D of myopia in either eye. Subject are without known existing eye disease or history of systemic disease that may affect the eye; Subjects with known BCVA of 20/32 or better per recent prescription
You may not qualify if:
- Subject has had prior use of the Visibly Vision Test; Subjects with known diabetes mellitus; Subjects using ophthalmic or systemic corticosteroids; Subjects with known autoimmune conditions (e.g. Grave's disease, rheumatoid arthritis); Subjects with active corneal or conjunctival infection;Subjects with active corneal, conjunctival, or intraocular inflammation (i.e., uveitis); Subjects with known diabetic retinopathy; Subjects with known glaucoma or ocular hypertension; Subjects with known macular degeneration; Subjects with previous ocular surgery; Subjects using antihyperglycemic agents; corticosteroids; hydroxychloroquine (Plaquenil) and chloroquine (Aralen); tamoxifen (Nolvadex); Subjects with a history of measured spherical difference between left and right eye of 4.00 D or greater;
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
TRA
Harlingen, Texas, 78550, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- DEVICE FEASIBILITY
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 5, 2019
First Posted
February 6, 2025
Study Start
March 4, 2019
Primary Completion
March 25, 2019
Study Completion
March 25, 2019
Last Updated
February 6, 2025
Record last verified: 2025-01
Data Sharing
- IPD Sharing
- Will not share