Shattky Optometrists

Visique Shattky Optometrists has been serving the people of Hawke's Bay with trusted expert eyecare and eyewear since 1906. We continue a proud history of family ownership with successive father & son teams Ernest & Derek Shattky, Neil & Phil Donaldson plus Mark & Tim Eagle. Using the very latest technologies and systems we specialise in Glaucoma tests, Retinal photography, Diabetic management, Therapeutic drugs, dietary supplements and Behavioural Optometry. We are ACC primary eyecare providers and CAA certificated examiners. Our speciality Orthokeratology and Keratoconus contact lens services are very successful. Using Zeiss, Nikon & Essilor quality lenses, High Fashion frames and sunglasses we excel in providing award winning choice. We provide Irlen and Cellfield specialist services for 3D, binocular problems, Amblyopia and reading problems.

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Home > How We Help > The Best Eyecare Technology > Non-Contact Tonometry

Non-Contact Tonometry

 Non-contact tonometry (or air-puff tonometry) uses a rapid air pulse to applanate (flatten) the cornea.

Corneal applanation is detected via an electro-optical system. Intraocular pressure is estimated by detecting the force of the air jet at the instance of applanation. Because it is only a carefully calibrated puff of air and their is no contact between your eye and the instrument it is a very safe/sterile device with no risk of contamination/infection to the patient.

Historically, Non-contact tonometers were not considered to be an accurate way to measure IOP but instead a fast and simple way to screen for high IOP. However, modern non-contact tonometers have been shown to correlate well with Goldmann tonometry measurements and are particularly useful for measuring IOP in children and other non-compliant patient groups.


We use the Reichert Xpert Plus Non-Contact Tonometer which has Advanced Logic Non-Contact Tonometer complete with high definition video monitor, automated elevation controlled joystick with infared pupil lock tracking, auto or manual mode, average(3 reading) mode, or single reading mode, auto confidence level, internal systems check and thermal printer.

A typical eye pressure would be between 10 - 22mmHg. This pressure is much lower than your blood pressure which is typically around 120mmHg.

The eye pressure varies through the hours of the day, typically highest in early morning, lowest in mid-afternoon.

Some people have always got higher pressures, so knowing what your pressure is, over a period of years is more valuable than just one reading.

There are drugs that lower the pressure back to normal levels if it is found to be too high.