D-KAT Z-Type Digital Keeler Applanation Tonometer Digital Applanation Tonometry for your Zeiss type slit lamp The world's first Digital Applanation Tonometer Keeler have been leading the way in optical innovation for nearly a century and the latest addition to the Keeler range of tonometer's is no exception Keeler are proud to launch the world's first Digital Applanation Tonometer designed specifically for Zeiss type slit lamps. British made, the D-KAT Z-type is reliable and easy to use, providing tonometry at it's very best. The D-KAT Z-type operates according to the 'Goldmann method', by measuring intraocular pressure from the force required to flatten (applanate) a constant area (3.06mm) of the cornea. The LED display enables ease of use in darkened envoiroments, whilst the internal electronics allow for the fast accurate measurement of IOP Features: Keeler manufactured Keeler quality Tonometry at it's best British built LED display for ease of use in darkened environments Display reading to 1 decimal point Low battery usage Quick Overview Designed and manufactured in the UK to the same exacting standards as all Keeler products, the Keeler D-KAT delivers reliability and ease of use.