Can your phone detect double vision? new study puts app to the test
NCT ID NCT07571538
First seen Jun 27, 2026 · Last updated Aug 25, 2026 · Updated 2 times
Summary
This study checks how accurate and repeatable a smartphone app called VisionApp is at measuring ghosting (a type of double vision). Twelve healthy adults will wear contact lenses and rate ghosting images while the app also measures it. The goal is to see if the app can reliably replace clinic-based tests.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- VisionApp smartphone app
- What this could lead to
- If successful, this app could provide a simple, at-home way to measure ghosting vision, helping eye doctors diagnose and monitor double vision more easily.
- What could go wrong
- This is a very small, early study with only 12 healthy participants, so results may not apply to people with eye diseases. The app's accuracy in real-world settings is still unproven.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 12 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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8 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * has a refractive error between Plano and -5.00 D of sphere and cylinder components combined. * has refractive cylinder (e.g., astigmatism) of -0.75 D or less * has had a self-reported oculo-visual exam in the last 2 years * has best-corrected visual acuity of at least 20/20 in each eye * is not amblyopic or does not have any diagnosed ocular disease * is willing and able to follow instructions and maintain the appointment schedule Exclusion Criteria: * has any systemic disease affecting ocular health and visual acuity * is currently using any systemic or topical medications that could affect ocular health and visual acuity * is participating in another eye related research study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Clinical Optics Research Lab
RECRUITINGBloomington, Indiana, 47405, United States