Nystagmus, characterized by involuntary eye movements, can be quantified using a vibrometer. This helps in diagnosing the condition and assessing its severity.
The working principle of a vibrometer involves attaching a small reflective marker to the eye or using a non-invasive method to track the eye's movements. The device then emits a beam of light towards the marker or the eye and measures the reflected beam's characteristics. By analyzing changes in the reflected beam, the device can calculate the amplitude, velocity, and frequency of eye movements. optomet vibrometer
| Parameter | Value | |-----------|-------| | Measurement principle | Laser Doppler interferometry, digital decoding | | Velocity range | ±10 m/s (higher ranges optional) | | Velocity resolution | < 0.01 µm/s/√Hz | | Displacement range | ±1 mm (at low frequencies) | | Frequency range | DC to 25 MHz (depending on model) | | Working distance | 0.2 m – 100 m (depends on surface) | | Laser class | Class 2 or 3R (safe for most surfaces) | | Outputs | Analog velocity/displacement, digital (IEPE, USB) | | Operating temperature | 5°C to 40°C | The device then emits a beam of light
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