Discover the new standard ... Keeler D-KAT Digital Applanation Tonometer New to the Keeler product portfolio is the Digital Applanation Tonometer, (D-KAT). 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. It 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. With its LED display and internal electronics it allows for the fast accurate measurement of IOP, (intraocular pressure). Available in both R-Type & T-Type variants. The R type can be fixed to the slitlamp. The T type is removable and is convenient to use on multiple slit lamps. With less moving parts, the D-KAT is more reliable, accurate and recalibration takes just seconds. Features: Keeler manufactured Keeler quality Tonometry at it's best British built Available in both fixed and takeaway variants LED display for ease of use in darkened environments Lightweight and portable Display reading to 1 decimal point Low battery usage Less moving parts, meaning increased reliability and less maintenance 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.