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English
How to use a Binocular Indirect
Ophthalmoscope
1. Preparation of the Patient
Explain the procedure to the patient and inform them that
the light, although bright, is not damaging to the eyes and
subsequent after-images may be seen.
Take any necessary precautions when dilating the pupil
such as assessing the depth of the anterior chamber.
Instilling a topical anaesthetic first will allow better
absorption of the mydriatic as well as reducing the blinking
urge. Follow with the dilation routine preferred.
2. Headband Adjustment
The Vantage headband is designed to ensure comfort even
with prolonged use; however, care must be taken to see
that the headband is balanced so that the main weight is
supported by the top headstrap rather than by the
circumference band.
a) Loosen the headband with the adjustment knob at the back
(A) and place the headband on the head. Tighten until just
snug (the headband should be able to be pulled off the head
without loosening this ratchet more than one or two notches).
Do not over tighten.
b) Lengthen or shorten the headband height with the ratchet at
the top (B) until the inner leather padded brow band on the
front of the headband rests comfortably above the eyebrow.
c) Raise or lower the ophthalmoscope (E) to vertically align
the eyepieces in front of the eyes by slightly loosening the
knobs on either side of the headset, then manually lower or
raise the outer metal brow band until alignment is correct
and re-tighten.
d) Swing the eyepieces in toward the eyes as close as possible
