TruScan 532 Single - Wavelength – Operators Manual Rev. No 02
Page 10 of 114
ALWAYS
try to let the laser has its own or dedicated power outlet. Additional
items may be plugged in a Multiple Portable Socket Outlet, which may be
plugged into an additional outlet.
DO NOT
use the Laser Console if the ambient temperature is outside the range
of 20 to 35°C. This temperature range is the rated operating temperature limits
where the Laser system can be guaranteed to operate without any interruptions
to normal use. Outside this range of temperature it is possible that the Laser will
generate an error condition where the word “hold” is displayed and the system
goes to Standby until the internal temperature returns to within normal limits
then the Laser can be used again but the error condition may reoccur unless the
rated temperature comes within limits.
2.3
Optical Hazards
Guidance for the safe use of Lasers and Laser systems is found in the standard IEC60825-
1, the USA 21CFR 1040.10 and 1040.11, and ANSI Z136.1 - 1986.
During normal operation of the TruScan 532 Single-Wavelength the operator is protected
from Laser hazards by built in optical absorption Safety Filters. All other personnel in the
area should wear protective eyewear to eliminate the risk of eye injury occurring.
The optical density (OD) of eye protection must be greater than or equal to 4 and the
wavelength of 532nm range is also specified on it. It is shown in the following format:
OD4+ @ 532nm
Otherwise, the safety glasses are NOT suitable for this purpose of eye protection. Safety
Glasses are required to have the CE mark applied if used in the EU.
The TruScan 532 Single-Wavelength uses a Class II Laser Diode Aiming beam. Its
Wavelength range from 635 to 650 nanometers (nm) and the maximum power output is
set at the factory to be less than 1mW delivered to the patients cornea. However it is
always recommended to use the lowest aiming beam intensity during treatments.
The TruScan 532 Single-Wavelength Photocoagulator Laser has been classified as a Class
4 and its classification specified accordingly to the above quoted standards. This
classification is also based on the Accessible Emission Limits (AEL) as calculated
according to the standards.
2.3.1
Nominal Ocular Hazard Distance (NOHD)
The Nominal Ocular Hazard Distance (NOHD) is the distance between the equipment and
a person’s eye for which the optical power, from the equipment, entering the dilated
pupil of the person will be less than or equal to the Maximum Permissible Exposure (MPE)
as specified in the standards (i.e. less than a Class 1 Laser Output).
