The investigators have developed a simple to use device that facilitates the monitoring of the upper eyelids motion, acquires the eyelid vertical movement and enables analysis and graphic presentation of the results. the device system consists 3 components : glasses for the patient including magneto sensitive probes, hardware and dedicated software. Our purpose is to characterize eyelid motion in normal population. The methods include measuring each patient 10 minutes during watching a short movie.
Essentially, for Hall-probes monitor the magnetic field generated by a tiny magnets attached to the upper eyelid.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
80
all volunteers will wear the eyelid motion sensor device (Hall-probe) (including the tiny magnets on the upper eyelid). a 10 minutes movie will be screened on 40 inch television screen in a 3 meters distance
Demonstrate and describe measurable blinking character in normal population.(Hall-probes monitor the magnetic field generated by a tiny magnets attached to the upper eyelid)
Time frame: 10 minutes
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