Canon Cr-2 User Manual

21
Flow of Operation 
The flow of operations for retinal photography is as follows. 
Connect the cables if necessary as described in “Connecting Cables” (see page 22). 
 
Preparing for an examination (page 22)
Setup for patient (page 24)
Alignment (page 25) 
Small pupil photography (page 30) 
x2 photography (page 30) 
Diopter compensation (page 31) 
Anterior eye photography (page 32) 
Photography (page 28) 
Finishing an examination (page 29)
4
 Basic Operations           

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4 Basic Operations
Connecting Cables 
Connect the CR-2 to a computer in which the Rics NM 2, the supplied software, has been installed. 
 WARNING•	Do not plug or unplug the power plug with wet hands.
•	 Do not use any power cord other than the supplied.
Otherwise, fire or electric shock may result.
1 Make sure that the power switch for the CR-2 is turned off. 
2 Connect the power cord and the USB cable to the 
retinal camera. 
3 Insert the power plug all the way into an AC outlet. 
4 Connect the other...

4 Basic Operations
23
3 Remove the objective lens cap, and turn the retinal 
camera's power switch to the ON position. 
The POWER lamp lights and the set lamp blinks. 
The CR-2 automatically does an initialization sequence (internal 
check and initialization of driving parts). After the initialization 
the parts of the main unit stop in their center positions. 
CAUTIONThe main unit and the chin rest move to the center position when the CR-2 is turned on. Do not 
touch the main unit and the chin rest...

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4 Basic Operations
7 Disinfect the forehead rest and replace the chin rest paper. 
If chin rest paper is not being used, disinfect the chin rest also. 
 CAUTION•	To prevent the risk of infection, wipe the forehead rest with ethanol solution or any other 
disinfectant whenever changing patients. For details on how to disinfect, consult a specialist.
•	 To ensure cleanliness, replace the chin rest paper whenever the patient is changed.
Setup for Patient 
1 Start an examination on the Rics NM 2. 
Enter...

4 Basic Operations
25
Alignment 
1 Align the retinal camera with the eye to be photographed. 
 CAUTIONWhen adjusting the position of the retinal camera in the front-back direction, slowly bring the main 
unit closer to the patient while looking at the patient’s eye from the side. The patient’s eye may be 
injured if the objective lens makes contact with it.
1.  Move the stage until the eye to be photographed appears in the observation monitor. 
2.  Adjust the center of the patient's pupil and the...

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4 Basic Operations
2 Tilt the operation lever forward or backward to unify the top and bottom of the image of 
the pupil. 
When the pupil is smaller than the inner pupil alignment circle 
Darken the room further to dilate the patient's pupil more. If the patient's pupil does not dilate 
enough, use the small pupil photography function (see page 30). 
3 Press the alignment button. 
The retina appears in the observation monitor and the internal 
eye fixation lamp blinks for three seconds. 
4...

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5 Have the patient stare at the internal eye fixation lamp to fix the part for the photograph. 
Take the following steps to guide the patient’s eye. Press the FIX TARGET buttons up, down, left, and 
right to move the internal eye fixation lamp to your desired position and then press the set button 
to make it blink. If the eye cannot be guided by the internal eye fixation lamp, use the external eye 
fixation lamp (sold separately). 
Set button 
Press the set button for over two...

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4 Basic Operations
Photography
1 Do a preliminary check before taking photos. 
a. The photography ready lamp lights green. 
b.  The working distance dots appear sharpest. 
c.  The working distance dots are on the extension line of the WD guides. 
d.  The split lines form a single line. 
a
b, c
d
Photography ready lamp 
•	Green: Ready to shoot. 
•	 Red: Preparing to shoot. Wait until the lamp lights green. 
•	 None: Cannot access the Rics NM 2. The retina observation mode is not established. 
Flash...

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29
Finishing an Examination 
1 Save the images on the Rics NM 2 and end the examination. 
The set lamp starts blinking and the observation monitor turns off. 
CAUTIONThe main unit and the chin rest moves to the center position when a study is finished with the 
control software. Do not touch the main unit and the chin rest while they are moving.
2 Align the stage with the base and slide the stage lock 
to LOCK side to lock the stage. 
Align the mark on the stage lock and the mark on...

30
The section describes how to use x2 photography, small pupil photography function, diopter 
compensation, and anterior eye photography and how to connect an external monitor when one is 
used. 
x2 Photography
You can take and save images that are within the x2 photography range on the observation monitor. 
1 Press the x2 photography button. 
The lamp on the x2 photography button lights, and the x2 photography indicator and x2 photography 
range marks appear on the observation monitor. 
x2 photography...