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An electronic instrument that measures hydrostatic pressure within the eye: when placed in position, a tiny movable plate is pressed against the eye, flattening a circular section of the cornea (no eyeball anesthesia is required); a current is then sent through a small electromagnet, of such value that it will just pull the plate away from the eye; the value of the current is proportional to eye pressure; a measurement can be made in about 1 second; used in diagnosis of glaucoma. Also known as electronic tonometer.



an instrument for measuring pressure or tension—specifically, blood pressure in the arteries, intraocular pressure, and muscle tone or tension.

References in periodicals archive ?
8 mm Hg) were reported; however, these data were obtained with the use of a Schiotz tonometer.
Materials used in the study were Schiotz tonometer, Sphygmomanometer, Bicycle Ergometer, measuring tape, weighing scale and Paracaine eye drops.