Visual AcuitySTRAT-JVNNCT07352904
Exploration Strategies in Night Vision Sensors
An observational study of Visual Acuity, run by Direction Centrale du Service de Santé des Armées.
Trial summary
The main objective of this clinical trial is to identify a variation in visual strategy characterized by both head movements and eye movements of healthy volunteers during a target detection task when images simulating night vision goggles (NVG) are presented, compared to a situation in which the images simulate a… Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Visual Acuity
- How many people
- 10 participants
- Where
- No sites listed yet
- Study dates
- 1 Dec 2026to 25 Dec 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: French volunteers
Who may be able to join
- Affiliated with social security;
- Normal vision or vision corrected with lenses (far vision ≤ 0.03 log unit (≥ 9/10) OD/OG/binocular);
- No current or past ocular or binocular pathology: strabismus or amblyopia;
- Signed non-objection form.
Who cannot join
- Pregnant or breastfeeding women;
- Incapacitated adults;
- Individuals who do not understand French (written or spoken).
About this study
The main objective of this clinical trial is to identify a variation in visual strategy characterized by both head movements and eye movements of healthy volunteers during a target detection task when images simulating night vision goggles (NVG) are presented, compared to a situation in which the images simulate a natural environment.
To highlight changes in environmental scanning with simulated images from NVG, objective measurements will be collected:
Read more
- eye movements characterized by saccades (speed, latency, and number) for each stimulus
- head movements (horizontal angle of the participant's head) for each stimulus and throughout the exposure
Participants sit facing a screen (9.90 m x 2.10 m) onto which a virtual scene is projected. The objective is to correctly identify, as quickly as possible, a target stimulus (represented by a tank) that may appear in the scene. They must use the directional arrows on a game controller to indicate whether the tank is moving to the left or to the right.
There are four visits involving four viewing conditions in which the task remains the same:
- With restricted field of view and a normal scene.
- Without restricted field of view and a scene simulating the vision obtained by NVGs.
- With restricted field of view and a scene simulating the vision obtained by NVGs.
- Without restricted field of view and a normal scene. Regarding the content of the scene, half of the tests in each visit involve a so-called poor scene when fog is simulated, or an enriched scene when there is no fog. Each visit lasts approximately one hour and thirty minutes.
- Conditions
- Visual Acuity
- Keywords
- visual strategy, Night Vision Goggles, eyetracking, visual fatigue
- Medical subject headings
- Asthenopia
What is being measured
The primary outcome is the main question the study is designed to answer.
Eye movements characterized by saccades (speed, latency, and number) for each stimulus
Measurements from eyetracker
Measured: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Head movements (horizontal angle of the participant's head) for each stimulus and throughout the exposure
Measurements extract from motion capture
Measured: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Secondary outcomes (3)
The average stimulus detection times.
Measurements from an eyetracker
Measured: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Number of correct responses to the perceptual task
Extract with software
Measured: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Visual fatigue will be measured using a questionnaire
To highlight subjective visual fatigue generated by changes in visual search strategies using simulated images from night vision sensors.
Measured: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Jan 2026
- Study start1 Dec 2026 (estimated)
- Primary completion25 Dec 2026 (estimated)
- Study completion25 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Visual AcuityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Prospective
- Enrolment
- 10 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Direction Centrale du Service de Santé des Armées
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07352904
- Sponsor's protocol ID
- 2025-A00047-42
- Acronym
- STRAT-JVN
- Status last verified
- Aug 2026
- First submitted
- 18 Sep 2025
- Last updated
- 28 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 28 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Exploration Strategies in Night Vision Sensors
- ClinicalTrials.gov ID
- NCT07352904
- Acronym / sponsor ID
- STRAT-JVN / 2025-A00047-42
- Conditions
- Visual Acuity
- Keywords
- visual strategy, Night Vision Goggles, eyetracking, visual fatigue
- Study type
- Observational
- Recruitment status
- Not yet recruiting
- Enrolment
- 10 participants (estimated)
- Lead sponsor
- Direction Centrale du Service de Santé des ArméesUniversity, hospital or other
- Study start
- 1 Dec 2026 (estimated)
- Primary completion
- 25 Dec 2026 (estimated)
- Study completion
- 25 Dec 2026 (estimated)
- First posted
- 20 Jan 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The main objective of this clinical trial is to identify a variation in visual strategy characterized by both head movements and eye movements of healthy volunteers during a target detection task when images simulating night vision goggles (NVG) are presented, compared to a situation in which the images simulate a natural environment.
To highlight changes in environmental scanning with simulated images from NVG, objective measurements will be collected:
- eye movements characterized by saccades (speed, latency, and number) for each stimulus
- head movements (horizontal angle of the participant's head) for each stimulus and throughout the exposure
Participants sit facing a screen (9.90 m x 2.10 m) onto which a virtual scene is projected. The objective is to correctly identify, as quickly as possible, a target stimulus (represented by a tank) that may appear in the scene. They must use the directional arrows on a game controller to indicate whether the tank is moving to the left or to the right.
There are four visits involving four viewing conditions in which the task remains the same:
- With restricted field of view and a normal scene.
- Without restricted field of view and a scene simulating the vision obtained by NVGs.
- With restricted field of view and a scene simulating the vision obtained by NVGs.
- Without restricted field of view and a normal scene. Regarding the content of the scene, half of the tests in each visit involve a so-called poor scene when fog is simulated, or an enriched scene when there is no fog. Each visit lasts approximately one hour and thirty minutes.
Study design
- Observational model
- Other
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- French volunteers
Key inclusion criteria (4 listed)
- Affiliated with social security;
- Normal vision or vision corrected with lenses (far vision ≤ 0.03 log unit (≥ 9/10) OD/OG/binocular);
- No current or past ocular or binocular pathology: strabismus or amblyopia;
- Signed non-objection form.
Key exclusion criteria (3 listed)
- Pregnant or breastfeeding women;
- Incapacitated adults;
- Individuals who do not understand French (written or spoken).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Eye movements characterized by saccades (speed, latency, and number) for each stimulus
Time frame: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Measurements from eyetracker
Head movements (horizontal angle of the participant's head) for each stimulus and throughout the exposure
Time frame: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Measurements extract from motion capture
3 secondary outcomes
The average stimulus detection times.
Time frame: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Number of correct responses to the perceptual task
Time frame: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Visual fatigue will be measured using a questionnaire
Time frame: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Aug 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Visual Acuity, run by Direction Centrale du Service de Santé des Armées.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 28 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Eye movements characterized by saccades (speed, latency, and number) for each stimulus (time frame: Day 1 (Visit 1) and during follow-up visits at Day 2 (Visit 2), Day 3 (Visit 3), and Day 4 (Visit 4)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Aug 2026.