Lens Wheel With Correction Lenses; Aperture Wheel; Replacing The Bulb; Technical Data Of The Ophthalmoscope Lamp - Riester e-scope Mode D'emploi

increased if the patient has already been examined with this or another ophthalmo-
logical 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 increases 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.

4.3. Lens wheel with correction lenses

The correction lenses can be adjusted using the lens wheel. The following correction
lenses are available:
D+ 1 | 2 | 3 | 4 | 6 | 8 | 10 | 15 | 20
D- 1 | 2 | 3 | 4 | 6 | 8 | 10 | 15 | 20
The values can be read off in the illuminated field of view. Plus values are indicated by
black numbers, minus values by red numbers.

4.4. Aperture wheel

Using the aperture wheel and filter wheel, the following apertures or filters can be
selected:
Aperture
Semi circle:
Small circle
Large circle:
Fixation star: For definition of central and eccentric fixation.
Filter Function
Red-free filter: To increase contrast for assessment of (green filter)
changes in fine vessels, i.e. retinal haemorrhages.
Blue filter: for improved recognition of vascular abnormalities or
bleeding, for fluorescence ophthalmology.

4.5. Replacing the bulb

e-scope® ophthalmoscopes
Remove the instrument head from the battery handle. The LED/incandescent bulb is
located at the bottom of the instrument head. Remove the lamp from the instrument
head using your thumb and forefinger or a suitable tool. When switching from an LED
to an incandescent bulb, an optionally available adapter must also be used; when
changing from an incandescent bulb to an LED, this must be removed from the lamp
compartment. Insert the new LED/incandescent bulb firmly.
CAUTION!
The pin of the lamp must be inserted into the guide groove on the adapter and the
adapter must be inserted into the guide groove on the instrument head.
e-xam
Remove the instrument head from the battery handle. The XL or LED lamp is located
in the lamp head.
Turn white insulation counter clockwise. Remove insulation with contact.
Lamp will fall out. Insert new lamp, turn contact with insulation clockwise.

4.6. Technical data of the ophthalmoscope lamp

XL 2.5 V, 750 mA, average lifespan 16.5 h
LED 3.7 V 38 mA avg. lifespan 20,000 h
Technical data for the e-xam lamp
XL 2.5 V, 750 mA, average lifespan 16.5 h
LED 2.5 V 120 mA 5,000-5,500 Kelvin, CRI 72 avg. lifespan 20,000 h

4.7. Care instructions

General note
The cleaning and disinfecting of the medical devices serve to protect the patient, the
user and third parties and to maintain the value of the medical devices. Due to the pro-
duct design and the materials used, a defined limit for the maximum possible number
of reprocessing cycles cannot be determined. The service life of medical devices is
defined by their function and careful handling.
Before return for repair, defective products must have undergone the prescribed re-
conditioning process.
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Function
For examinations with turbid lenses.
For reduction of reflexes of small pupils.
For standard fundus examination.