A soft contact lens search coil for measuring eye movements.
A five turn coil of magnet wire sandwiched between two soft contact lenses served as a magnetic search coil to measure horizontal and vertical eye movements in humans. The lens was adhered to the eye for 35 min by periodically misting the eye with distilled water; during this time the records of eye position showed that the lens remained firmly attached to the eye. Using this sensor, no topical anesthetic need be applied and the lens can be worn for an extended period of time without increasing intraocular pressure.
D003263:Contact Lenses, Hydrophilic; D005133:Eye Movements; D006801:Humans; D007429:Intraocular Pressure; D008280:Magnetics; D008722:Methods; D012438:Saccades; D013997:Time Factors; D014792:Visual Acuity