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4 Other functions
4.3 LCD Monitoring
This section describes how to perform alignment on the LCD monitor without using the optical viewnder
(eyepiece) during mydriatic color photography, Red Free photography, uorescence angiography, and mydri-
atic monitoring in FAF.
This function eliminates the need of diopter adjustment of the optical viewnder (eyepiece).
Also, this mode uses infrared rays instead of visible light to observe patients; therefore, patients are relieved
of glaring, which facilitate smooth photography.
Pressing the “LCD monitoring button” on the right side panel switches
to the LCD monitoring mode.
Pressing the “LCD monitoring button” once again switches back to the
viewnder monitoring mode.
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When the patient's pupil in natural dialation is 5.5 mm or more in diameter, mydriatic color observation
allows you to photograph with eld angle of 50 degrees without using mydriatics .
The eld angle for the standard non-mydriatic color photography is 47 degrees.
Important
◇ Images on the LCD monitor are not as clear as the ones in the viewnder monitoring mode; therefore,
it becomes more difcult to remove a are or adjust focus.
◇ Notice that when performing LCD monitoring in the FA mode, not only a uorescence image but also
an actual captured image with infrared rays; therefore, the photographed uorescence image differs
from the image seen while performing alignment.
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The LCD monitor angle may be changed. Adjust the angle if the LCD monitor is hard to see during the
viewnder observation or while the optical head is tilted.