LightLas 532 – Operator's Manual Rev. No 01 Page 74 of 115
5.5.2 Pre-check / Alignment LDU
When the Laser Delivery unit has been fitted to the Slitlamp the alignment of the
Laser beam with reference to the Slitlamp needs to be checked and adjusted
accordingly. The following procedures will guide you through the entire pre-check
and alignment process. Three different types of LDU systems are detailed as follows:
Slitlamp (Integrated / Attachment)
LIO
Endoprobe
5.5.2.1A Integrated Slitlamp LDU
Prior to pre-check and realign the integrated Slitlamp LDU, ensure all the corrected
installation or setup are in placed (including eye piece dioptre setting, fiber
connection, and console setup and on) prior to proceed the following steps.
Slit Integrity Checkout
1. Insert the Slitlamp target rod into the Slitlamp or set up a target to view the
Illumination spot
2. Set a narrow slit width with low intensity illumination and verify that the slit is
focused and that the two slit lines are aligned together for the Integrated
Delivery Unit Slitlamp. If not align, proceed to following steps:
2a. Unscrew the upper slit alignment screw slightly or lower slit alignment
depending on your preference (refer to fig. 5.25)
2b. Choose one end as your starting reference and realign the another
Note: Do not over loosen the alignment screws completely specially the upper slit
due to the slit prism module may fall off and break prism mirror
2c. Confirm it by illuminating the aperture to see if you have aligned them ok
2d. Process to the next step if it is aligned
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