
I
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Use this device properly and safely.
"CAUTION! Federal Law (US) restricts this device to sale by or on the order of a physician or
a properly licensed practitioner."
Safety precautions
BEFORE USE, READ THIS MANUAL.
This operator’s manual contains information necessary for the operation of the NIDEK
AUTO REF/KERATO/TONOMETER Model TONOREF II. This manual includes the
operating procedures, safety precautions, and specifications.
This manual is necessary for proper use. Especially, the safety precautions and operating
procedures must be thoroughly understood prior to operation of the device.
Keep this manual handy to verify use whenever necessary.
The device complies with ISO 10342 (Ophthalmic instruments-Eye Refractometers). The
dioptric powers are indicated with reference wavelength λd = 587.56 nm.
There are no user-serviceable parts inside the device except printer paper.
If you encounter any problems or have questions about the device, please contact NIDEK
or your authorized distributor.
In this manual, signal words are used to designate the degree or level of safety alerting. The defi-
nitions are as follows.
WARNING
• Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
• Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury or property damage accident.
Even situations indicated by “ CAUTION” may result in serious injury under certain conditions.
Safety precautions must be strictly followed at all times.
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