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7.1 Mosaic mode photography
Mosaic mode photography has its own internal xation target selection and positioning different form that of Normal or SP
mode.
In this section only these differences are described.
Preparations for
photography
Turn ON the power
switch
k
Preparing this instrument
k
Preparations for patient’s eye examination
k
Press mosaic button and check that “MOSAIC” appears
on LCD monitor.
Anterior segment
observation
Checking the selected
photography mode
1) Checking the photography mode
Normal mode : NORMAL
SP mode : SMALL PUPIL
Selecting a xation
target
2) Selecting an internal xation target
Anterior segment
alignment
3) Make sure that the instrument is currently showing anterior
segment observation display.
4) Guiding patient’s xation : Ask the patient to look at the
center of the xation target.
5) Alignment:
Move optical head base as close as possible to you.
Move optical head base leftward/rightward and move
optical component upward/downward to position the
pupil image in the center of the LCD monitor.
Move optical head base
to place two working dots in
the anterior segment working dot position aids “( )”
shown on LCD monitor.
6)
Check the pupil diameter:
Normal mode (Normal pupil photography)
Pupil diameter:
4.0 mm or greater
SP mode (Small pupil photography):
Pupil diameter:
3.5 mm to 4.0 mm
7) Adjusting the light intensity:
Change the photography light intensity depending on pu-
pil diameter.
8)
Check that the eyelid is not intruding the pupil area.
Switching to retinal observation
9) Press anterior segment button to switch to retinal observa-
tion.
Retinal observation
Retinal alignment
10) Adjust the observation light intensity.
11) Guide the patient’s xation.
12) Alignment:
Position optical head base in the place where you
can obtain the retinal image most clearly.
13) Focusing:
Turn
focusing knob to have two focus dots on the display
to form a single line.
Photography 14) Photography: Press shutter button to photograph.
7 Advanced photography