PASCAL
®
Synthesis TwinStar Ophthalmic Scanning Laser Systems
Page 100 of 142
88293-EN, Rev C
Intraoperative Instructions
Slit Lamp Treatment Procedure
Perform the following procedure:
1. Verify that the slit lamp eyepieces are adjusted to your settings.
2. Position the patient at the slit lamp with their chin on the chin rest and forehead
pressed firmly against the head rest.
3. Select the laser treatment spot diameter, exposure time, treatment power level, and
pattern type.
4. Position the contact lens on the patient's eye.
5. Select READY mode. The aiming beam will turn on.
6. Adjust the aiming beam intensity.
7. Adjust the pattern spacing, radius, and/or curvature, if applicable.
8. Focus the slit lamp and observe the red aiming beam imaged on the patient's eye.
Verify that the laser spots are round and that the pattern is undistorted. Establish
proper placement of the laser beam with the slit lamp joystick.
9. Press <Titrate> to switch to a single spot and perform test burns at the periphery of
the treatment area.
10. Adjust the laser treatment power for therapeutic effect, and then press <Titrate> again
to revert to the selected pattern.
11. Prior to treatment, verify that the power and other parameters are within acceptable
ranges.
12. Depress and hold down the footswitch to deliver the treatment laser beam to the
tissue.
Each footswitch depression will result in
one scanned pattern
unless the treatment is
terminated prematurely by early release of the footswitch. Treatment may be interrupted
at any point by releasing the footswitch.
NOTE
•
Always place the system in STANDBY mode if there is a prolonged pause in
treatment.
•
If the system is in READY mode and remains idle for 5 minutes, it automatically
reverts to STANDBY mode, and the touchscreen control panel becomes light gray.
To resume activity, touch the screen. The Status control displays “<START UP>”
for approximately 90 seconds until the system is ready again.
