Lightmed LightLas 532 - 2.3.2 Avoid Exposure to Laser beams; 2.4 Electrical Hazards

LightLas 532 – Operator's Manual Rev. No 01 Page 13 of 115
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).
The calculated NOHD for the LightLas 532 with different Laser Delivery Units is:
 5 meters at maximum power settings for the Endoprobes
 18 meters at maximum power settings and 1000m spot size for Slitlamp Delivery
Units
 20 meters at maximum power settings for LIO
Therefore when the laser is in operation, all persons that are closer than these
distances to the equipment should be wearing eye protection.
Patients, where possible, should have the untreated eye covered or protected from
laser reflections.
2.3.2 Avoid Exposure to Laser beams
Reassembly or maintenance of the laser system should only be performed by
authorized and trained personnel. The external housing of the laser system should
never be removed otherwise you or standby observers could be exposed to
dangerous levels of laser radiation and potentially lethal electrical voltages.
Eye safety filters are designed to protect physician’s eyes from back scattered laser
beams must always be used. They are integrated into the Slitlamp and LIO Delivery
Units. When using the endoprobes a separate filter that attaches to the operating
microscope must be used.
For other personnel that may be exposed to reflections or backscatter they must
wear safety glasses or goggles. In any case NEVER look directly at the treatment
laser beam as severe eye injury is likely. This means avoid looking into the aperture of
any of the laser delivery units or the console.
2.4 Electrical Hazards
The Lightlas 532 Photocoagulator laser has been designed to apply the International
Standards for Medical Equipment. The laser system is designed to operate with three
terminal prongs AC voltage where the third prong pin is the earth-grounded prong.
Warning: It is not safe to operate the Lightlas 532 photocoagulator laser without an
earth-grounded receptacle. There is possible risk of electric shock.
No cover or housing need to be removed by the operator or user. Only the
authorized and trained service or agent can remove the cover or housing assembly