OPERATIONS IN USE
OPERATION OF THE VARIABLE ILLUMINATION APERTURE: OFFISS,
When observing the eye ground through the front lens, flare is reduced by using the variable
1Move the variable illumination aperture switch to the left to set the illumination aperture to IN.
2The illumination aperture moves up by moving the variable illumination aperture switch to the left.
3The illumination aperture moves down by moving the variable illumination aperture switch to the right.
4Moving the variable illumination aperture switch as far as possible to the right will set the
illumination aperture to OUT at the lowest position. On the contrary, moving it as far as possible
to the left will set the illumination aperture to OUT at the top position.
If the front lens is stored with the variable illumination aperture set to IN (with the
illumination aperture appearing in the observation visual field), it will automatically go OUT
(the aperture disappears from the observation visual field and the illumination light intensity
can be adjusted). (Refer to "Storing the front lens" on P.73.)
If you need to use the coaxial illumination during an ophthalmic
operation, make sure you use the minimum illumination sufficient for the
operation. Exposing the patient’s retina to excessive light may lead to