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ference Biometry” (ULIB) of the University of Wuerzburg, Germany.
Still such converted data should only be used as a starting point to
derive personalised constants.
.. IOL constants derived using contact ultrasound
measurements
If there are optimised constants available for a contact ultrasound bi-
ometer in combination with a keratometer, respective IOL constants
have to be converted into constants optimised for optical biometry. A
comprehensive manual how to convert existing ultrasound biometry
optimised IOL constants to optical biometry optimised IOL constants
can be found on the web site of the “User Group for Laser Inter-
ference Biometry” (ULIB) of the University of Wuerzburg, Germany.
Still such converted data shou only be used as a starting point to
derive personalised constants.
. Electrical connections
• Only use a Haag-Streit approved external medical power supply
(IEC/EN60601-1, UL60601-1, CAN/CSA C22.2 No 601.1-M90).
• Plug, cable and earth-wire connection on socket must function
perfectly.
• Make sure that the device is only connected to power sources as
defined on the device nameplate. This unit has no ON/OFF switch.
Before carrying out maintenance or cleaning work, the device must
always be disconnected from the mains by unplugging the DC con-
nector.
• Computers and other peripherals (printers, etc.) must meet stan-
dard IEC/EN 60601-1, or be connected via electrical isolation to ex-
ternal networks (isolating transformer, Ethernet isolator, etc.)
• For connection to PC, only use the supplied USB cable (2 m).
. Optical radiation
According to IEC 60825-1, the limiting values for class 1 lasers are
respected when the device is used in the defined manner.
. Device transportation
Use original packaging when transporting the device over long dis-
tances. For short distances, grasp the lower part of the device with
both hands and lift (see section 3.3.1)
. Special notes in text
Additional safety instructions have been inserted in the text of this
User Guide where necessary. They are differentiated according to
their importance and are intended to help exclude any risk to patients
or operators, to prevent damage to the biometer, and to guarantee
perfect functioning of the device.
