Auto Ref / Kerato / Tono / Pachymeter TONOREFTM III

Refraction

Large Pupil Zone Imaging Method

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.

Super Luminescent Diode (SLD) Light and Highly Sensitive CCD Camera

The system combining the SLD Light and highly sensitive CCD camera significantly improves measurement capability even in dense cataractous eyes.

Optimal Fogging to Minimize Accommodation

Fogging is performed after correcting the patient’s astigmatism with built-in cylinder lenses. This minimizes the effect of accommodation even of patients with high astigmatism.

Keratometry

Double Mire Ring Method

Keratometry measurements performed with the mire ring method reduces interference from the eyelids. The TONOREFTM 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.

Pachymetry

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

Tonometry

Automated Calculation of Corrected IOP

The TONOREFTM III provides the automated calculation function of the corrected IOP based on the central corneal thickness. Generally, the IOP is overestimated for thick corneas and underestimated for thin corneas. The corrected IOP value allows a more accurate assessment.

Patient-friendly Air Puff

• Automatic Puff Control (APC) : In subsequent measurements, the APC function performs the measurement with the minimum air pressure based on the previous measurement data.
• Softer and Quieter Air Puff : The new mechanical design of the TONOREFTM III reduces noise and air intensity to achieve a more gentle air puff over that of the TONOREFTM II.

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

Retroillumination Image and NIDEK Cataract Indices

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.

Easy to Use Screen

• Tiltable 7-inch color LCD touchscreen
• Summary Display Summary screen allows easy and quick confirmation of patient data.

Easy Access to Patients Eyelids

The radical cut design allows direct access to patient eyelids.

3-D Auto Tracking and Auto Shot

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

Joystick for Flexible Alignment

The joystick helps the operator make fine adjustments during alignment to improve the precision, even for eyes with poor fixation which cannot be tracked with automated tracking systems.