Vestibular Diagnostics Video Systems Video Nystagmograph VF5
Vestibular Diagnostics Video Systems · Model Video Nystagmograph VF5
Video nystagmograph VF5 records the patient's eye movements using two miniaturized video cameras mounted in a lightweight mask including a computer, monitor and printer. The video images of the eyes are analyzed within a PC-based system to calculate horizontal and vertical eye positions. The images of the eyes are shown online together with the eye movement traces and analysis diagrams on the computer screen. The application is easy to use in a standard Windows environment. The infrared camera is mounted in a combined mask for both recordings in darkness and with free-field-of-view. The mask is easily darkened with a magnetic cover plate. At the picture you can see the result of intelligent eye recognition: the software automatically locates the pupil and outlines the region of interest.
Key tips
- ·Verify laser output with a real power meter, not the unit's own display - the display can drift independently of true output.
- ·Take "the image looks a little off" reports seriously - optical alignment drift is usually gradual, not sudden.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Light source / lamp failure
MediumSymptoms: Dim illumination, lamp error.
Root cause: Xenon/LED aging.
Probe / handpiece fault
HighSymptoms: No phaco power, error.
Root cause: Tip or handpiece wear.
Pump / fluidics fault
MediumSymptoms: Unstable anterior chamber.
Root cause: Peristaltic pump wear.
Imaging sensor drift
LowSymptoms: Blurry/offset image.
Root cause: Camera calibration drift.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Imaging camera module
Class Periodic replacementRel. cost $$$R&R Difficult
Phaco handpiece / tip
High-value, track usage.
Class Periodic replacementRel. cost $$$$R&R Difficult
Illumination lamp / LED
Class Periodic replacementRel. cost $$$R&R Moderate
Peristaltic pump tubing
Consumable.
Class Frequent wear itemRel. cost $R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Imaging camera module | Periodic replacement | $$$ | Difficult |
| Phaco handpiece / tip High-value, track usage. | Periodic replacement | $$$$ | Difficult |
| Illumination lamp / LED | Periodic replacement | $$$ | Moderate |
| Peristaltic pump tubing Consumable. | Frequent wear item | $ | Easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Optical alignment / calibration check
- ·Lamp or laser output verification
- ·Annual full PM
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Light source / lamp failure
- Confirm the presentation - typically dim illumination, lamp error - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: xenon/LED aging.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the phaco handpiece / tip per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Probe / handpiece fault
- Confirm the presentation - typically no phaco power, error - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: tip or handpiece wear.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the illumination lamp / LED per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Technical Specs
- Height
- 38 cm
- Length
- 25.5 cm
- Width
- 36.5 cm
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Eye clinic / ophthalmology suite
- Operating Room (ophthalmic surgery)
Documents & Manuals
No documents available for this device yet.
Troubleshoot this device with Bio
Describe a symptom or error code. Bio answers from this device's own documented error codes, failure modes, parts, and guides.
Ask Bio →