Immersive assessment of visual search abilities
A virtual reality (VR) test
- Precise control over luminance and contrast
- Quick and safe assessments
- Comparable results across trial sites
A validated and sensitive outcome
- A realistic task inspired by daily life
- Direct measurement of functional vision
- Captures patient challenges
- Sensitive to change in visual function
- Minimizes learning effects
A VR solution for global use
- One-day setup for installation, validation, and training
- Automated performance assessment with a quality check reading center
- User-friendly for site personnel
Designed for clinical centers and laboratories, VR‑ViSA assesses visual search ability and accurately tracks functional improvements following treatment.
VR‑ViSA is a virtual reality test that measures visual search ability in patients with peripheral or central deficits.
It recreates realistic environments in which the patient must locate targets, providing an accurate and representative assessment of everyday situations.
This immersive approach ensures fast, reliable, and reproducible testing under strict control of experimental parameters.
*Kurek et al., 2024
1. An innovative virtual reality solution
In controlled VR environments, the patient searches for two 2-degree targets across 20 natural scenes. Each scene is timed (maximum 2 minutes), and a performance score sensitive to visual function is provided immediately.
2. VR‑ViSA distinguishes each stage of the disease
Performance gradually declines from the early to the severe stage, while control subjects remain stable: VR‑ViSA provides an ideal functional marker to monitor your patients and measure therapeutic effectiveness.
VR‑ViSA sensitivity to RP progression – average performance by contrast level (n=60).
3. A VR solution for global use
Virtual reality ensures precise control over testing conditions: fast, reliable, and reproducible assessments in any setting. Setup, validation, and training are completed in one day. The English interface and automatic scoring ensure effortless multisite adoption.
VR-ViSA services
VR-ViSA INSTALLATION
All equipment is shipped on-site; remote guided installation.
SITE TRAINING & CERTIFICATION
Remote session (≤ 4 hours). Once proficiency is demonstrated, the team is certified to test patients.
AUTOMATIC SCORING & READING CENTER
The performance score is computed automatically, and checked by our reading center at Streetlab.
Scientific validation
Conferences
Kurek, C., Defer, A., de Montleau, C., Coen, C., Chaumet-Riffaud, P., Audo, I., Sahel, J.-A., & Authié, C. (2024, May 7). Assessing IRD progression over one year: performance-based testing in virtual reality with a visual search task. ARVO 2024, Seattle, USA.
Kurek, C., Talebi, A., Defer, A., Saddek, M.-S., Chaumet-Riffaud, P., Audo, I., Sahel, J.-A., & Authié, C. N. (2023, April 26). Visual search with natural scenes: validation of a new virtual reality outcome in inherited retinal disease. ARVO 2023, New Orleans, Louisiana, USA.