Ri-Scope® L Ophthalmoscope - Riester ri-scope Mode D'emploi

6.3. Swivel lens for magnification
The swivel lens is fixed to the device and can be swivelled 360°.
6.4. Insertion of external instruments into the ear
If you wish to insert external instruments into the ear (e.g. tweezers), you have
to rotate the swivel lens (approx. 3-fold magnification) located on the otoscope
head by 180°. Now you can use the operation lens.
6.5. Pneumatic test
To perform the pneumatic test (= examination of the eardrum), you require a
ball, which is not included in the normal delivery package, but can be ordered
separately. The tube for the ball is attached to the connector. Now you can care-
fully insert the necessary volume of air into the ear canal.
6.6 Technical data of the lamp
Otoscope XL 2.5 V 2.5 V 750 mA ave. life 15 h
Otoscope XL 3.5 V 3.5 V 720 mA ave. life 15 h
Otoscope LED 2.5 V 2.5 V 280 mA ave. life 10.000 h
Otoscope LED 3.5 V 3.5 V 280 mA ave. life 10.000 h
7. ri-scope L ophthalmoscopes
®
7.1. Purpose / indication
The Riester ophthalmoscope described in these Operating Instructions is pro-
duced for the examination of the eye and the eyeground.
ATTENTION!
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 higher than needed for a clear representation of the
target structures.
The irradiation dose of the photochemical exposure to the retina is the product
of irradiance and duration of irradiation. If the irradiance is reduced by half, the
irradiation time may be twice as long to reach the maximum limit.
Although no acute optical radiation hazards have been identified for direct or
indirect ophthalmoscopes, it is recommended that the intensity of light directed
into the patient's eye be reduced to the minimum required for examination /
diagnosis. Infants / children, aphasics and people with eye diseases are at a
higher risk. The risk may be increased if the patient has already been examined
with this or another ophthalmological instrument during the last 24 hours. This
is especially true when the eye has been exposed to retinal photography.
The light of this instrument may be harmful. The risk of eye damage increa-
ses with the duration of irradiation. An irradiation period with this instrument
at maximum intensity of longer than >5 min. exceeds the guideline value for
hazards.
This instrument does not pose a photobiological hazard according to DIN EN
62471 but still features a safety shutdown after 2 / 3 minutes.
7.2. Lens wheel with correction lens
The correction lens can be adjusted on the lens wheel. The following correction
lenses are available:
L1 and L2 ophthalmoscopes
Plus: 1-10, 12, 15, 20, 40.
Minus: 1-10, 15, 20, 25, 30, 35.
L3 ophthalmoscope
Plus: 1-45 in single steps
Minus: 1-44 in single steps
The values can be read off in the illuminated field of view. Plus values are dis-
played in green numbers, minus values with red numbers.
7.3. Apertures
The following apertures can be selected with the aperture hand-wheel:
L1 ophthalmoscope
Semi-circle, small/medium/large circular aperture, fixation star, slit.
L2 ophthalmoscope
Semi-circle, small/medium/large circular aperture, fixation star and slit.
L3 ophthalmoscope
Semi-circle, small/medium/large circular aperture, fixation star, slit and grid.
Aperture
Semicircle:
Small circle:
Medium circle: to reduce reflections for small pupils
Large circle:
Grid:
Light slit:
Fixation star:
22
Function
for examinations with turbid lenses
to reduce reflections for small pupils
for normal examination results
for topographic determination of retina changes
to determine differences in level
to ascertain central of eccentric fixation