Ophthalmoscope - Riester uni I econom Instrucciones Para El Uso

3.4.1 Attaching and removing ear specula
Place the desired ear speculum on the otoscope head so that the recess on the metal part of
the ear speculum fits into the guide pin of the head. Fasten the speculum firmly by turning
it clockwise.
To remove the funnel, first turn it firmly in the opposite direction and then remove it from
the otoscope head.
3.4.2 Pneumatic otoscopy
Pneumatic otoscopy (an examination of the eardrum), requires a bulb which is not included
in the normal scope of delivery but may be ordered separately (see 6. Parts and accesso-
ries).
There is a black cover ring with a connector on the otoscope head. Connect the tube end
of the bulb to the connector. You can now carefully introduce the necessary amount of air
into the ear canal.
3.4.3 Swivel lens for magnification
Swivel lens for magnification
There is a 360° swivel magnifying lens on the otoscope head with a magnification power of
about 4 times. The swivel lens can be easily removed by pulling it out if desired.
3.4.4 Inserting external instruments into the ear
If you want to insert external instruments into the ear (e.g. tweezers), you can remove the
cover glass with the black ring and the connector for the pneumatic test by turning it coun-
ter-clockwise and pulling it out.
Put the glass back on. Make sure that the notch on the black plastic ring fits into the guide
pin on the otoscope head. Fasten the ring firmly by turning it clockwise.
3.4.5 Replacing the lightbulb
Remove the ear speculum from the otoscope (see 3.4.1). Unscrew the lightbulb counter-
clockwise.
Screw the new bulb in tightly in a clockwise direction and put the desired ear speculum back
on (see 3.4.1) Defective bulbs must be replaced immediately.
Please note that the temperature can exceed 41 °C (105,8°F) during intended use!

3.5 Ophthalmoscope

1. Lens wheel with correction lenses
2. Use with lamp
3.5.1 Lens wheel with correction lenses
The correction lenses can be adjusted using the lens wheel. The following correction lenses
are available:
0 to +20 and 0 to -20 dioptres. The values can be read off in the illuminated field of view.
Plus values are displayed with a black background, minus values with a red background.
3.5.2 Aperture
A permanently installed aperture (round circle for normal fundus examinations) is available.
3.5.3 Replacing the lightbulb
Turn the knurled screw on the ophthalmoscope head counter-clockwise and pull out the
insert with the bulb. Unscrew the lightbulb counter-clockwise.
Screw a new bulb in tightly clockwise, fit the insert into the ophthalmoscope so that the
screw fits into the recess provided below the knurled screw and tighten the knurled screw.
Defective bulbs must be replaced immediately.
Because prolonged intense exposure to light can damage the retina, the use of the eye exam
device should not be unnecessarily prolonged, and the brightness setting should not be set
34