Frontiers

Evidence basis

VRT is supported by randomised trials, systematic reviews and guidelines. The evidence is strongest in unilateral peripheral hypofunction, and increasingly robust across bilateral loss, the elderly and functional disorders.

Unilateral hypofunction — the strongest case

The American Physical Therapy Association’s clinical practice guideline — a systematic review of 39 good-quality RCTs — found that VRT significantly reduces dizziness, gaze instability and balance dysfunction and improves quality of life in unilateral peripheral hypofunction, with a strong recommendation for individualised programmes over general activity or watchful waiting.1

04812weeks of rehabilitationfunctionwith VRTnatural only
Individualised VRT accelerates and improves recovery over natural compensation alone — the core finding behind the strong guideline recommendation. Curves are schematic.

Bilateral loss, older adults and functional disorders

In bilateral hypofunction, targeted adaptation and substitution still yield meaningful gains in dynamic visual acuity and postural control, evidencing the neuroplastic potential of central pathways even without peripheral input.2 In older adults, personalised VRT is safe and effective — reducing falls and improving gait, balance confidence and participation.3 Individualised protocols also shorten symptom duration and restore function in PPPD and post-concussive dizziness.4,5

Unilateral hypofunctionstrongOlder adults / fallsstrongBilateral hypofunctionmoderatePPPD (with CBT)moderatePost-concussionmoderateCentral disordersemerging
Evidence is strongest in unilateral peripheral hypofunction and older-adult fall prevention, with a growing base across bilateral loss, PPPD and post-concussion. Tiers summarise the literature for teaching.

The bottom line

Outcomes are best when programmes are individualised, supervised and tracked with repeated standardised measures (DHI, FGA, CDP). Grounded in neuroplasticity and sensorimotor integration, and amplified by technology and interdisciplinary care, VRT is not merely an adjunct but a central, evidence-based treatment in vestibular medicine.

Key points

  • A 39-RCT guideline strongly recommends individualised VRT for unilateral hypofunction.
  • Bilateral loss still benefits via adaptation and substitution.
  • Strong fall-reduction evidence in older adults; effective in PPPD and post-concussion.
  • Supervised, individualised, objectively-monitored programmes work best.