Nidek Tonoref III


£17,295.00 £12,995.00

The Tonoref III is a space saving, comfortable and efficient upgrade to your practice. Combining auto-refraction, auto-keratometry, non-contact tonometry and non-contact pachymetry into one easy to use device.

  • 4-in-1

    Auto-refractometer, auto-keratometer, non-contact tonometer and non-contact pachymeter in one device!

  • Patient friendly

    Automatic Puff Control (APC) function performs subsequent measurements with the minimum air pressure based on the previous measurement data.

  • Easy to use

    3-D auto-tracking and auto-shot provide faster, simpler, and more accuate measurements. Once alignment is completed, the measurement starts automatically.

Description & Technical Specs


The use of a wide area measurement within the pupil increases the accuracy of measurement that is more indicative of the subjective refraction.

The large pupil zone imaging method measures the central refraction and a large area refraction.
The difference in the measurement allows assessment of the effect of pupil size on vision under mesopic conditions. Measurements can be performed on small pupils as small as 2 mm.


Keratometry measurements performed with the mire ring method reduces interference from the eyelids. The TONOREF™ III performs measurements at diameters of 3.3 mm and 2.4 mm. Comparison of the two values allows a better understanding of the cornea shape.


Non-contact optical pachymetry is used to measure corneal thickness.


The TONOREF™ III provides the automated calculation function of the corrected IOP based on the central corneal thickness. Patient-friendly Air Puff is now software and quieter.


Added functionality

Accommodation Measurement

The accommodation measurement helps to assess such as pseudomyopia, eyestrain, and accommodative palsy. Objective measurement of accommodation is performed with patient’s focusing on a target that moves from distance to near. The artificial intelligence algorithm detects the patient’s response and reduces the measurement time in patients with a slow or weak accommodative response.

Opacity Assessment

The retroillumination image allows evaluation of media opacity. NIDEK cataract indices indicate the severity of the opacity and helps to assess the progression of pathology

Brochures & Manuals