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FDA-cleared technology indicated to measure and assess the blink reflex

How it works 



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Over 30 seconds, eight
light puffs of air are
delivered to the corner
of the eye, stimulating the blink reflex



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High speed cameras
record the blink reflex
at 280 frames/sec,
capturing 16,000
objective data points in 30 seconds



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Using a proprietary
15 parameters
of the blink reflex are
measured and displayed 
in under 1 minute



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Results are transferred and stored in the encrypted Cloud Portal for review by a clinician



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A portable and battery- operated device, EyeStat
can be set up and
operated anywhere
with ease

The blink reflex 

The blink reflex is a biomarker of brain function used in the diagnosis and assessment of neurological diseases and conditions

Damage (trauma or disease) to the brain will cause a change in the corneal blink reflex

Blinking is a reflexive nervous system response

The trigeminal nerve, when stimulated, sends a message directly to the brainstem. The message is translated, and the brain’s response is transmitted back through the brain to the facial nerve (and in turn, to the muscles controlling the eyelids). The result is the blink reflex
The blink reflex involves two cranial nerves, the trigeminal (V) and facial (VII) nerves, routing through the medulla and pons in the brainstem
Blink reflex blinkcns

What is measured

Objective data in the blink of an eye: 10 Parameters
Latency (msec)
Time differential between stimulation and eye movement
Differential latency (msec)
Time differential between the start of ipsilateral eye movement and the start of contralateral eye movement
Delta 30
Time difference between ipsilateral eye and contralateral eye movement 
Eyelid excursions (pixels)
Distance traveled by the eyelid from the tonic lid position to closed position
Lid velocity  (pixels/msec)
Average eyelid speed in first 7 frames following start of eyelid movement
Time to close (log)
Time for lid to travel from tonic lid position to the closed position
Time to open (log)
Time for lid to travel from closed position back to tonic lid position
Time under threshold (log)
Time that the eyelid spends below the threshold position
Number oscillations
Cycles of up and down upper eyelid movement after a stimulated blink
Total blink time (log)
Time from start of eyelid movement until it returns to its tonic lid position
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