8
IRIDEX IQ 577
®
/IQ 532
®
Laser Systems Operator Manual
15510-EN Rev G
Specific Warnings and Precautions
It is essential that the surgeon and attending staff be trained in all aspects of these
procedures. No surgeon should use these laser products for ophthalmic and ENT surgical
procedures without first obtaining detailed instructions in laser use. Refer to “Warnings and
Cautions” for more information. Proper eye protection for 532 nm light must be utilized. Follow the
Eye Protection Policy at your facility.
Laser Settings
Beginning at low power with short duration exposures, the surgeon should note the surgical
effect and increase power, power density, or exposure duration until the desired surgical effect is
obtained. The information in the following tables is intended to provide guidance only for treatment
settings, which are not prescriptive for any condition. The operative needs of each patient should be
individually evaluated based on the indication, treatment location, and on the patient’s medical and
wound healing history. If uncertain of expected clinical response, always start with a conservative
setting and increase the setting in small steps.
532 nm Typical Laser Treatment Parameters for Ocular Photocoagulation
532 nm Continuous-Wave
Application
Delivery Device
Spot Size at
Target* (µm)
Power
(mW)
Exposure
Duration (ms)
Central Retina Focal/Grid
SLA
50–100
100–300
30–100
Peripheral Retina/PRP/Tears
SLA, LIO, EndoProbe
125–500
100–600
30–200
Trabeculoplasty
SLA
50
600–1000
100
Iridotomy
SLA
50
500–1000
100–200
Nylon Suture Lysis
SLA
50
200–750
100–200
*Spot size at target is dependent on many parameters, including spot size selection, physician’s choice of laser
delivery lens, and patient’s refractive power.
532 nm MicroPulse
Application
Delivery
Device
Spot Size at
Target* (µm)
Power
(mW)
Duty Cycle
(500 Hz)
Exposure
Duration (ms)
Central Retina Focal/Grid
SLA
50–200
100–400
5%, 10%, 15%
100–300
Peripheral Retina/PRP
SLA
500–1000
500–1000 5%, 10%, 15%
100–300
Trabeculoplasty
SLA
200–300
400–1200 5%, 10%, 15%
100–300
*Spot size at target is dependent on many parameters, including spot size selection, physician’s choice of laser
delivery lens, and patient’s refractive power.