1974•Archives of OphthalmologyRequires access
A Noncontact Applanation Tonometer
Max Forbes
Open publisher page 109 citations
Abstract
A new applanation tonometer (NCT) measures intraocular pressure without touching the eye. A central area of the cornea is deformed by an air-pulse of linearly increasing force and the instant of applanation is determined by a monitoring system that senses light reflected from the corneal surface. Clinical evaluation has demonstrated good correlation between NCT and Goldmann tonometer readings, thereby validating this new method of tonometry.