Filter
Red-free filter:
Polarisation filter: for precise assessment of tissue colours and to reduce
Blue filter:
With L2 + L3 every filter can be applied to every aperture.
7.5. Focusing device (for L3 only)
By turning the focusing wheel, you can quickly fine-tune the examination area to
be viewed at various distances.
7.6. Magnifying glass
A magnifying glass with 5x magnification is supplied with the ophthalmoscope
set. This can be held between the instrument head and the examination area as
required. The examination area is enlarged accordingly.
7.7. Technical data for the lamp
Ophthalmoscope 2.5 V XL 2.5 V 750 mA, average lifespan 15 h
Ophthalmoscope 3.5 V XL 3.5 V 690 mA, average lifespan 15 h
Ophthalmoscope 3.5 V LED 3.5 V 290 mA, average lifespan 10,000 h
8. Retinoskope Slit and spot retinoscopes
Device function:
1) 360° scale
2) Examination window
3) Bayonet mount
4) Examination window (patient side)
5) Focusing wheel
8.1 Purpose/indication
The slit/spot retinoscopes described in these instructions for use were manu-
factured to determine the refraction (ametropia) of the eye.
8.1.1. Contraindication:
There may be a risk of ignition of gases if the instrument is used in the presence
of flammable mixtures or mixtures of pharmaceuticals.
The instrument heads and battery handles must never be placed in liquids.
The exposure to intense light during an extended eye examination using the
retinoscope may damage the retina.
The product is non-sterile. Do not use on injured tissue.
Only use Riester or Riester-approved accessories/consumables.
Cleaning frequency and sequence must comply with the cleaning regulations of
non-sterile products in the respective facility. Cleaning/disinfection instructions
in the instructions for use must be observed.
The product may only be used by trained personnel.
8.1.2. Intended patient population:
- The device is intended for adults and children.
8.1.3. Intended operators/users:
- The retinoscopes are intended exclusively for use by doctors in clinics and
medical practices.
8.1.4. Required skills/operator training:
- Since only doctors use the retinoscopes, they have the appropriate qualifi-
cations.
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function
contrast-enhancing to assess fine vascular changes,
e.g. retinal bleeding
corneal reflections
improves detection of vascular abnormalities or bleeding,
for fluorescence ophthalmology
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