Contactless tonometer to measure the intraocular pressure (IOP) using an air jet. This device comes with the pachymetry automatic measurement to provide more accurate results.
Non contact tonometer
The forced-air tonometer is based upon the Goldmann principle of the tonometer contact device. This system makes possible evaluating the intraocular pressure by calculating the mechanical force required to flatten a central corneal zone. The contactless tonometer uses an air jet to flatten the cornea.
Comfortable for the patient
Thanks to the APC (‘Automatic Puff Control’) technology, the measurement is performed very smoothly. The power of the air jet is automatically adjusted, depending on the patient’s intraocular pressure, to optimise the comfort and reduce the noise level during the reading.
Thanks to the ‘Auto-Tracking’ and ‘Auto-Shoot’, the devices of the NIDEK range provide quick, easy and accurate.
Non contact pachymeter
Integrating a Scheimpflug camera into the TONOPACHY NT-530P device makes possible performing the contactless measurement of the corneal thickness (pachymetry). This pachymetry value is used to apply a correction factor to the value of the intraocular pressure, depending on the thickness of the central cornea.
Forced-air tonometers use the same principle. They measure the force required to deform the eye and they deduce the pressure. The center of the cornea is the part of the eye that is deformed. It is then obvious that, if the deformation of the cornea is abnormal, deducting the pressure will be faulty. It happens when the cornea is abnormally thick (it can deform as easily) or abnormally thin (it can deform easily).
On the device NT-530, compensating the value of the intraocular pressure can be performed by inputting manually the pachymetry value.
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