User's Manual Part 5
8065751131 6.11
WARNINGS!
The head-worn Laser Indirect Ophthalmoscope (LIO-AT) is designed solely for examination
and treatment of the eye, particularly the retina.
Use only the illumination power supply provided with LIO-AT. It is specially designed for
medical applications.
Insure that the selection on the
PurePoint
™
front panel is LIO. It is the responsibility of the
™
front panel is LIO. It is the responsibility of the
™
operator to verify that the selection is correctly confi rmed.
The operator will have a colored** (pink) view through the Doctor Protection Filter due to
blocking of the 532 nm wavelength (green).
The operator must be careful to avoid potential secondary refl ections; therefore the room
used to treat the patient should be approved by a qualifi ed laser safety offi cer.
All personnel in the treatment room must wear protective eyewear (OD 4 or above at 532
nm) when the system is in “Standby” or “Ready” modes.
The laser delivery system is an integral part of the Alcon LIO-AT and is not designed to be
used with an observer. Never use a teaching or observation system in conjunction with the
LIO-AT. There is no eye protection provided for the observer.
Never treat a patient when the
PurePoint
™
Laser is connected to a service computer.
™
Laser is connected to a service computer.
™
Before each use of the headset, the operator must check the permanent Doctor Protection
Filter for scratches, breaks, or alterations. If there is any doubt, please call Alcon Technical
Services, and discontinue use of device.
There are potential hazards when inserting, steeply bending, or improperly handling of
the fi ber optic cable. Not following the recommendations of the manufacturer may lead to
damage to the fi ber or delivery system and/or harm to the patient or user.
Since the aiming beam passes down the same delivery system as the treatment beam,
it provides a good method of checking the integrity of the delivery system. If the aiming
beam spot is not present at the distal end of the delivery system, or its intensity is reduced
or it looks diffused, this a possible indication of a damaged or not properly working
delivery system. If there is any doubt, contact Alcon Technical Services.
The use of fl ammable anesthetics or oxydizing gases such as nitrous oxide (N
2
O) and
oxygen should be avoided. Some materials - for example cotton wool when saturated with
oxygen - may be ignited by the high temperatures produced in normal use of the laser
equipment. The solvents of adhesives and fl ammable solutions used for cleaning and
disinfecting should be allowed to evaporate before the laser equipment is used. There is
also danger of ignition of endogenous gases.
A qualifi ed technician must perform a visual inspection of the following components every
twelve months: warning labels, power cords, and fuses. In case of a defi ciency, do not use
the system; call Alcon Technical Services.
A qualifi ed technician must verify the LIO-AT performance by performing an LIO-AT
calibration, power output, and energy matrix test every twelve months to ensure the
LIO-AT is operating within specifi cations. See Section Four of this operator's manual for
instructions. If the LIO-AT is not operating within specifi cations, do not use the system;
call Alcon Technical Services.
A qualifi ed technician must check and record ground continuity and both polarities for
leakage current every twelve months to ensure they are within the applicable standards
(for example: EN60601-1/lEC601-1). If they are above the applicable standards, or 50%
above initial measurement, do not use the system; call Alcon Technical Services.