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NCT05888441

Obstacle Negotiation in Older People With and Without Vision Impairment

Recruiting
NAAges 18+InterventionalBasic science
Indiana University
~200 participants
Updated 2025-11-13 on ClinicalTrials.gov
What's tested:Obstacle characteristics

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Vertical foot clearance, lead limb
Measured over During a single intervention visit (Study Visit 2), up to 2-3 hours in duration.
+3 more outcomes measured

Conditions

Low Vision

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Low Vision

NCT05888441

Where you'd take part

This study runs at 1 site. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Indiana University

    Bloomington, Indianastudy coordinator listed

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

Who to contact

Kierstyn A Napier-Dovorany, OD
[email protected]
8128554426
Email the study team

Opens a ready-to-send draft in your own email app — review before sending.

Want this trial checked against your situation?

Add a private profile and we'll compare every criterion below against your situation — and tell you which ones are met, uncertain, or excluding.

Check eligibility for this trial ~2 min · HIPAA-protected · delete anytime
Eligibility criteria

Inclusion

Age 18 or over
Able to walk independently
Either have normal vision, or impaired vision.
Impaired vision is defined as binocular visual acuity of 20/25 or worse with or without a central scotoma; and/or binocular visual field that is restricted to an average of 100 degrees in diameter or less
Control subjects will have visual acuity of 20/40 or better.

Exclusion

Not cleared by a medical provider for moderate physical activity
Self-report or have a history of: vestibular disorder or deafness
Medical history of any condition that affects the ability to walk for up to 2 hours with breaks, such as feeling dizzy or faint, chest pain, palpitations, pain or numbness in the legs, shortness of breath,
Cognitive limitations either by self-report or a score on the Mini Mental State Exam below 24 (out of 30)
Walking or gait abnormalities, such as those caused from an injury, surgery, severe arthritis, or neurological condition such as Parkinson's disease
Unable to walk without any walking aids such as a walker, cane, guide dog, or oxygen tank.
Does not speak English

What this trial measures

  • Vertical foot clearance, lead limbDuring a single intervention visit (Study Visit 2), up to 2-3 hours in duration.

    Distance from lowest point of foot (heel or toe) to top of obstacle

  • Foot placement variabilityDuring a single intervention visit (Study Visit 2), up to 2-3 hours in duration.

    Standard deviation of position of toe to obstacle over 2-4 steps before the obstacle

  • Obstacle crossing speedDuring a single intervention visit (Study Visit 2), up to 2-3 hours in duration.

    Speed from lead toe off immediately before the obstacle to trail heel down immediately after the obstacle.

  • Gaze sequencingDuring a single intervention visit (Study Visit 2), up to 2-3 hours in duration.

    Sequence of fixations from start of trial to end of trial, normalized to the total duration and divided into 100 equal segments