Zeiss 3000 - Position The Patient Module

Stratus OCT User Manual PN 2660021134133 A
Acquire Scans
3-5
In preparation for the next step, the important features to note are the scan image (left
side) and video image (upper right). The other functions available in this window will be
detailed in the usual sequence of their application.
Center Line Display
Right-click anywhere in the scan image and a vertical line appears in the center of the scan
im
age. Click again to remove it. This can be useful to Adjust Scan Placement—see
page 3-8.
Position The Patient Module
Once the SCAN ACQUISITION WINDOW is active, you can begin to position the patient module
for scanning.
Caution: The optimal position of the patient module ocular lens is ~9 mm or
~3/8” from the study eye. When positioned
properly, the ocular lens may
touch the eyelashes or the nose. Practice the utmost care to avoid contact
with the patient's eye.
Tools to Position the Patient Module
Use the following tools to position the patient module for scanning:
•The joystick to mak
e gross and fine adjustments of the patient module in the
horizontal plane—side to side, forward and back. The joystick is located on the rear
(operator side) of the patient module.
•The joystic
k knob makes fine vertical adjustments. The joystick spins in either direction
to move the patient module up or down slowly and smoothly. It works whether or not
the joystick is locked. Turn the joystick clockwise to raise the patient module,
counter-clockwise to lower it.
•The f
ocus adjustment knob retracts and extends the ocular lens. It should be set at
the number that corresponds to the patient’s refractive correction, in diopters, if
known. Focus adjustment knobs are located on both sides of the patient module at
the patient's eye level (see the Stratus OCT System Hardware drawing on page
1- 8 ). From the operator side, turn the knob to
ward you to extend the lens toward the
patient. Turn it away from you to retract it. This
adjusts the focus of the video camera
whose black and white image you see on your monitor.
How to Position the Patient Module
The immediate goal of positioning is to acquire a video image and a scan image of the
d
esired retinal feature. The black and white video image aids you in accurately positioning
the instrument and placing the scan, but the final goal is to acquire a high quality scan
image.
You must position the patient module manually, using the joystick to make adjustments in
thr
ee dimensions. It is a reiterative process of positioning with the joystick, focusing the