Diagnose / Rehabilitate
Videonystagmography

Subjective Visual Vertical (SVV)

The SVV Synapsys enables to test a patient’s capacity to perceive verticality and horizontality.
Key benefits
- The SVV can be used with different Synapsys equipments like the VNG Ulmer or the D-VNS.
- The SVV can also be used independently.
- It is a fast and simple test that needs little equipment.
DESCRIPTION
The SVV software calculates the deviation angle between the real vertical angle value and the patient’s perception. This simple and fast test completes the VNG tests range.
Options
- Remote control
- GamePad
Connectivity
It can be used on Windows PC, TV screen, video projector or video monitor depending on what equipment it will be used with.
Standards
Class IIa medical device (European medical device directive 93/42/EEC)
Certifications
FDA approved
EC conformity / EN 60601-1 / EN 60601-1-2 / IEC 62471-1
Disposables
- Goggles Flex
- Disposable foams for goggles
- Limited vision eye occluder
Minimum computer requirements
Intel Procesor I5-xxx (3rd generation)
300 Gb of free space on hard disk
4 Gb RAM
Graphic card with dedicated memory - NVIDIA or AMD RADEON type (minimum 2 video output to enable extended mode (dual view))
1 USB port available
Technical specifications
Patient manager Saved on a dedicated database or integrated to VNG patient manager
Patterns Line, dot line or triangle (anti-aliasing)
Backgrounds Choice of color, picture, predefined patterns (x6)
Stimulation speed (optokinetic) +20°/s, -20°/s, +40°/s, -40)/s
Available tests Subjective Visual Vertical Subjective Visual Horizontal Dynamic visual vertical and horizontal (optokinetic background)
Protocols parameters Vision : monocular or bi-ocular Patterns zoom Head orientation Pattern choice Multiple choice of disturbing backgrounds (fixed or dynamic) Direction : horizontal or vertical
Results Visualization, comparison, printing
Vision field 20°
Weight 50g (1.8lb)
Included parts
- Goggles Flex
- Kit of 3 limited vision eye occluders
- Remote control or gamepad
- SVV software