Haag-Streit BX 900 User manual

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DEUTSCHENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS
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DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS PORTUGUÊS SVENSKA
© HAAG‑STREIT AG, 3098 Koeniz, Switzerland ‑ HS‑Doc. no. 1500.7220449‑04090 – 2021 – 08
INSTRUCTIONS FOR USE
Photo slit lamp
BX 900®
9. Edition / 2021 – 08

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DEUTSCHENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS
PORTUGUÊS SVENSKA
© HAAG‑STREIT AG, 3098 Koeniz, Switzerland ‑ HS‑Doc. no. 1500.7220449‑04090 – 2021 – 08
INSTRUCTIONS FOR USE
Photo slit lamp
BX 900®
9. Edition / 2021 – 08
Preface
Thank you for choosing a Haag-Streit device. Provided you comply carefully with the
regulations in these instructions for use, we can guarantee reliable and trouble-free
use of our product.
WARNING!
Read the instruction manual carefully before commissioning this product.
It contains important information regarding the safety of the user and
patient.
NOTE!
For USA only: Federal law restricts this device to sale by or on the order
of a physician or licensed practitioner.
WARNING!
This device is equipped with high intensity light emitting diodes.
Excessive exposure of patients in treatment with certain medication may
lead to phototoxic adverse reactions, due to higher photosensitivity.

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© HAAG‑STREIT AG, 3098 Koeniz, Switzerland ‑ HS‑Doc. no. 1500.7220449‑04090 – 2021 – 08
Contents
• 1 Safety...................................................................................................................................................4
◦ 1.1 Comments on these instructions for use........................................................................................4
◦ 1.2 Ambient conditions.........................................................................................................................4
◦ 1.3 Shipment and unpacking ...............................................................................................................4
◦ 1.4 Installation warnings ......................................................................................................................5
◦ 1.5 Operation, environment .................................................................................................................5
◦ 1.6 Light toxicity ...................................................................................................................................5
◦ 1.7 Disinfection ....................................................................................................................................6
◦ 1.8 Warranty and product liability ........................................................................................................6
◦ 1.9 Reporting obligation.......................................................................................................................6
◦ 1.10 Description of symbols.................................................................................................................7
• 2 Intended purpose / intended use .......................................................................................7
◦ 2.1 Device description..........................................................................................................................7
◦ 2.2 Medical purpose.............................................................................................................................7
◦ 2.3 Principles of operation ...................................................................................................................8
◦ 2.4 Clinical benefit................................................................................................................................8
• 3 Introduction .....................................................................................................................................9
◦ 3.1 Overview........................................................................................................................................9
◦ 3.2 Photo components.......................................................................................................................10
◦ 3.3 Lens barrel...................................................................................................................................11
◦ 3.4 Camera housing...........................................................................................................................11
◦ 3.5 Flash unit FU 01...........................................................................................................................11
◦ 3.6 LED illumination...........................................................................................................................11
◦ 3.7 Overview of the LED illumination unit upper part.........................................................................11
◦ 3.8 Blue filter......................................................................................................................................11
◦ 3.9 Shutter .........................................................................................................................................11
◦ 3.10 Background illumination.............................................................................................................12
◦ 3.11 Power supply .............................................................................................................................12
• 4 Device assembly / installation ...........................................................................................12
◦ 4.1 Instrument base with weight compensation facility......................................................................12
◦ 4.2 Setting the weight compensation facility......................................................................................13
◦ 4.3 Switching on the compensation facility ........................................................................................13
◦ 4.4 Switching off the compensation facility ........................................................................................13
◦ 4.5 Regulating the clearance of the slit width controls.......................................................................13
◦ 4.6 Attaching/removing a camera ......................................................................................................13
• 5 Commissioning ...........................................................................................................................13
◦ 5.1 Switching on the device ...............................................................................................................13
• 6 Operation.........................................................................................................................................14
◦ 6.1 Setting the eyepieces...................................................................................................................14
◦ 6.2 Preparing the patient....................................................................................................................14
◦ 6.3 Operating the device....................................................................................................................14
◦ 6.4 Background illumination (flash)....................................................................................................15
◦ 6.5 Photo diaphragm pre-selection.................................................................................................... 15
◦ 6.6 Setting the filters & diaphragms................................................................................................... 15
◦ 6.7 Fixation star................................................................................................................................. 16
◦ 6.8 Microscope and eyepiece............................................................................................................ 16
◦ 6.9 Operating the Flash unit FU 01 ...................................................................................................16
• 7 Decommissioning ..................................................................................................................... 17
• 8 Technical data ............................................................................................................................. 17
◦ 8.1 Slit illumination............................................................................................................................. 17
◦ 8.2 Stereo microscope....................................................................................................................... 18
◦ 8.3 Instrument base........................................................................................................................... 18
◦ 8.4 Dimensions.................................................................................................................................. 18
◦ 8.5 Flash illumination unit FU 01 .......................................................................................................18
◦ 8.6 Mirror and diaphragm component ...............................................................................................18
◦ 8.7 Lens barrel................................................................................................................................... 19
◦ 8.8 Camera........................................................................................................................................ 19
• 9 Maintenance.................................................................................................................................. 19
◦ 9.1 Device inspection ........................................................................................................................ 19
◦ 9.2 Changing the flash tube............................................................................................................... 20
◦ 9.3 Servicing...................................................................................................................................... 20
◦ 9.4 Replacing the fuses..................................................................................................................... 20
◦ 9.5 Cleaning and disinfection ............................................................................................................21
◦ 9.6 Replacing the illumination mirror .................................................................................................21
◦ 9.7 Dust cover ................................................................................................................................... 21
• 10 Appendix ...................................................................................................................................... 21
◦ 10.1 Accessories / functionals parts / detachable parts / consumables ............................................21
◦ 10.2 Legal regulations .......................................................................................................................22
◦ 10.3 Classification ............................................................................................................................. 22
◦ 10.4 Disposal..................................................................................................................................... 22
◦ 10.5 Observed standards ..................................................................................................................22
◦ 10.6 Information and manufacturer's declaration concerning electromagnetic compatibility (EMC) .23

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1Safety
DANGER!
Failure to comply with these instructions may result in material damage
or pose a danger to patients or users.
WARNING!
These warnings must absolutely be complied with to guarantee safe
operation of the product and to avoid any danger to users and to
patients.
NOTE!
Important information, please read carefully.
1.1 Comments on these instructions for use
NOTE!
In these instructions for use the point is used as decimal separator.
1.2 Ambient conditions
Temperature −40 °C ... +70 °C
Air pressure 500 hPa ... 1060 hPa
Transport
Relative humidity 10 % ... 95 %
Temperature −10 °C ... +55 °C
Air pressure 700 hPa ... 1060 hPa
Storage
Relative humidity 10 % ... 95 %
Temperature +10 °C ... +35 °C
Air pressure 800 hPa ... 1060 hPa
Use
Relative humidity 30 % ... 90 %
1.3 Shipment and unpacking
• Before unpacking the device, check whether the packaging shows traces of
improper handling or damage. If this is the case, notify the transport company
that delivered the goods to you.
• Unpack the device together with a representative of the transport company.
Make a report of any damaged parts. This report must be signed by you and by
the representative of the transport company.
• Leave the device in the packaging for a few hours before unpacking it
(condensation).
• Check the device for damage after it is unpacked.
• Return defective devices in the appropriate packaging.
• Store packaging material carefully so that it can be used for potential returns or
when moving.
• The slit lamp and headrest must be installed on an electrically insulated,
fireproof table top.
• The rail covers (a) prevent the slit lamp from tilting.
• Check that the connection parts of the accessories are in the correct position
(screw connections, quick-release fasteners).

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1.4 Installation warnings
WARNING!
•Do not modify this device without authorization of the manufacturer.
Installation and repairs may only be performed by trained
specialists.
• Any third-party device must be connected in compliance with the EN
60601-1 standard.
• Only original Haag-Streit spare parts may be used.
• Use of this device adjacent to or stacked with other equipment
should be avoided because it could result in improper operation. If
such use is necessary, this device and the other equipment should
be observed to verify that they are operating normally.
• Grounding reliability can only be achieved when unit is connected to
a hospital grade receptacle. (Not valid for EU countries).
• The device should be set up in such a way that the plug is always
easily accessible and the device can easily be disconnected from
the mains.
1.5 Operation, environment
DANGER!
Never use the device in potentially explosive environments where
volatile solvents (alcohol, petrol, etc.) and flammable anaesthetics are in
use.
WARNING!
• The device must be switched off after every use. Otherwise there is
a risk of overheating when a protective dust cover is used.
• This device must not be operated near of high frequency surgical
equipment and the radio frequency shielded room of a medical
electrical system for magnetic resonance imaging, where the
intensity of electromagnetic disturbances is high.
• Portable radio frequency communications equipment (including
peripherals such as antenna cables and external antennas) should
be used no closer than 30 cm (12 inches) to any part of the device,
including cables specified by Haag-Streit. Otherwise, degradation of
the performance of this device could result.
NOTE!
• This device must only be operated by qualified personnel. The
owner is responsible for their training.
• This device may only be used in accordance with the instructions in
the 'Intended purpose / intended use' chapter.
1.6 Light toxicity
WARNING!
• The light from this device may be dangerous. The risk of eye
damage increases with the radiation period and number of pulses.
Exposure at maximum output of longer than 70 seconds with the
LED illumination and 70 pulses with the flash source will exceed the
hazard guideline value.
•Using a 90 D lens reduces the exposure time to 9 seconds and the
number of pulses to 10.
NOTE!
• The radiation times and number of total pulses of all light sources
are cumulative.
• If the intensity of any of the light sources is reduced to 50% of the
maximum intensity, the illumination time or number of pulses to
reach the guideline value for radiation for the light source in question
is doubled. This linear relationship can be used to determine the
illumination time to reach the guideline value for radiation for the
combination of slight sources at various brightness settings.
• The guideline value for the evaluated irradiation of the retina is 10 J/
cm2.
• Nevertheless, we recommend keeping the intensity of the light
reaching the patient's retina to the minimum possible for the

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respective diagnosis. Children, aphakes and people suffering from
eye conditions are most at risk.
• An increased risk may also occur if the retina is exposed to the
same or a similar device with a visible light source within 24 hours.
This specially applies if the retina has been photographed with a
flashbulb in advance.
• When the flash illumination is used, the emission exceeds the Group
2 limit of parameter “weighted retinal visible and infrared thermal
radiance, LVIR-R“ as specified by EN ISO 15004-2: 2007 but does
not exceed the limit “retinal thermal” as specified by ICNIRP 2013.
Since this retinal exposure limit is not exceeded in case of normal
operation, the device can be regarded as safe for the patient’s eye
when operated within the limits specified by Haag-Streit.
1.7 Disinfection
NOTE!
The device can, but does not need to be disinfected. For more
information, please refer to the 'Maintenance' chapter.
1.8 Warranty and product liability
• Haag-Streit products must be used only for the purposes and in the manner
described in the documents distributed with the product.
• The product must be treated as described in the ‘Safety’ chapter. Improper
handling can damage the product. This would void all guarantee claims.
• Continued use of a product damaged by incorrect handling may lead to personal
injury. In such a case, the manufacturer will not accept any liability.
• Haag-Streit does not grant any warranties, either expressed or implied, including
implied warranties of merchantability or fitness for a particular use.
• Haag-Streit expressly disclaims liability for incidental or consequential damage
resulting from the use of the product.
• This product is covered by a limited warranty granted by your seller.
• For USA only: This product is covered by a limited warranty, which may be
reviewed at www.haag-streit-usa.com.
1.9 Reporting obligation
NOTE!
Any serious incident that has occurred in relation to the device must be
reported to Haag-Streit and the competent authority of the Member
State in your country.

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1.10 Description of symbols
Follow instruction for use Read the instructions for use
attentively
General warning, read the
accompanying documentation
European certificate of
conformity
Date of manufacture Manufacturer
Haag-Streit reference number Serial number
Trademark of the manufacturer
Haag-Streit AG
Notes on disposal, see the
'Disposal' chapter
Listed European Authorized
Representative Medical Device
Testsymbol of TÜV Rheinland
with approval for INMETRO
Brasil
MET Listed Mark with approval
for USA and Canada
On (Power) Off (Power)
Fuse Flash Test
After turning off the FU 01 flash
unit, wait at least 15 seconds
before the flash cable is
removed.
After turning off the FU 01 flash
unit, wait at least 15 seconds
before the slide is opened.
Warning: Dangerous voltage
2Intended purpose / intended use
A slit lamp biomicroscope is intended for use in eye examination. It is used to aid in
the diagnosis and documentation of diseases or trauma which affect the structural
properties of the eye.
2.1 Device description
The devices of the slit lamp are made up of:
• Stereo biomicroscope
• Slit illumination
• Instrument base
• Headrest and chin rest
The illumination system and a biomicroscope are mounted to an instrument base
operated by joystick. The single joystick allows horizontal and vertical displacement
of the slit lamp across the examination table. Both elements, the illumination system
and the biomicroscope, can be swiveled progressively across the pivot,
independently of one another.
A sturdy headrest is attached to the table. Both the table and the chin rest are
adjustable in height to provide a comfortable, yet sturdy examination position to the
patient, outside of the device's range of motion. As this device operates non-
invasively it only comes into contact with the patient at the chin rest and forehead
band.
2.1.1 Intended users
Users are qualified medical professionals such as ophthalmologists, optometrists,
opticians, nurses and researchers or other qualified specialists as permitted by local
legislation.
2.2 Medical purpose
This device has the following medical purpose:
•Diagnosis and monitoring of diseases of the anterior segment of the eye
•Diagnosis and monitoring of injuries of the anterior segment of the eye
• Investigation of the anatomy and physiological or pathological state of the
anterior segment of the eye

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2.2.1 Indications
The use of the slit lamp is indicated for the following medical conditions:
• Local and systemic diseases affecting the eye
• Lesions and defects of the anterior segment
• Acute infections and inflammations
• Presence of intraocular foreign bodies
• Other traumata of the eye
2.2.2 Part of the body
The slit lamp is intended for the examination of the human eye, specifically the
anterior segment of the eye (i.e., lids, lashes, conjunctiva, cornea, anterior chamber,
iris, and lens).
2.2.3 Patient population
This device is intended for use on human patients with the physical ability to sit in
front of a slit lamp with their head resting against the headrest in a steady position
and the mental ability to follow instructions.
2.2.4 Contraindications
There are no known contraindications.
2.3 Principles of operation
• The slit lamp implements the principle of focal illumination: The focal point of the
microscope and the illumination coincide.
• The microscope arm and the illumination arm are mounted on an instrument
base: Both can be swivelled independently around the same vertical axis.
• The instrument base can be moved in all three axes.
• When illuminating transparent media with a narrow, sharp slit, an 'optical
section' can be magnified and viewed through the microscope.
• The patient's head is fixed to a height-adjustable headrest holder so that the
examination can be carried out quickly and as comfortably as possible for both
doctor and patient.
2.3.1 Operating environment
The slit lamp is intended to be used in professional health care facilities such as
hospitals, physician's, optometrist's and optician's practices. For optimal use of the
slit lamp, the ambient lighting should be attenuated to improve image contrast. In
case of transillumination of the iris or for viewing details at great magnification at a
narrow slit, it may be necessary to completely darken the room.
2.4 Clinical benefit
The use of the slit lamp allows for the systematic examination of the eye under
magnification, thus permitting the diagnoses of pathologies that may have otherwise
remained unidentified and could have lead to blindness if left untreated.
The clinical benefits of the product outweigh the remaining residual risks to the
patient.

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3Introduction
The slit lamp consists of an illumination and a binocular microscope. The instrument
base can be used to move the entire device in front of the eyes. The illumination
offers a large number of setting options to make the practically invisible areas in the
eye visible. There is also a range of accessories available for the slit lamp to allow
special diagnosis possibilities in addition to the general examinations.
3.1 Overview
1. LED illumination unit upper part
2. Lever for grey filter and red
removal filter
3. Scale for angled position of the slit
image (5° increments)
4. Illumination mirror
5. Magnification changer
6. Mounting screw for the stereo
microscope
7. LED background illumination with
swivel bracket
8. Illumination unit / microscope
angle scale
9. Illumination arm locking screw
10. Microscope arm locking screw
11. Slit width controls
12. Weight compensation screws
13. Diffusor
14. Slit length / diaphragm scale
15. Slit length, slit rotation, blue filter
and fixation star control, knob for
rotating the slit
16. Cover screw for accessories pin
17. Bayonet connector for accessories
18. Stereo microscope with eyepieces
19. Breath shield
20. Fastening pin for breath shield
21. Thread for fixing the tonometer
22. Centring screw
23. Inclination angle latch 0°-20°
24. Joy stick base locking screw
25. Axle
26. Rail cover
27. Control lever
28. Slide plate

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3.2 Photo components
29. Flash cable (with tube and flash
tube connection)
30. Optical light guide for background
illumination
31. Pivoting mirror
32. Rotating knob for diaphragm pre-
selection
33. Rotating knob for diaphragm
preview actuation
34. Rotating knob for aperture preview
35. Flash unit FU 01
36. Flash tube housing
37. Flash tube
38. Lens barrel
39. Camera housing
40. Camera cable
41. Ocular with double cross hairs
42. Mirror and diaphragm component
43. Cable trigger key for mirror/
diaphragm component
44. Trigger key with cable

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3.3 Lens barrel
Lens barrel for 35mm photography (38). Image taken by the right beam path of the
microscope. Object image size: see Table b, chapter 'Mirror and diaphragm
component'.
3.4 Camera housing
Not every camera housing (39) can be connected. Haag-Streit selects suitable
camera models and makes the necessary adjustments. The photo slit lamp is only
guaranteed to function properly if cameras recommended by Haag-Streit are used.
Please consult your local partner for information on the supported cameras.
3.5 Flash unit FU 01
WARNING!
This device must only be operated by qualified and trained personnel.
Face plate
45. Flash intensity high with LED
46. Symbols with LED (See chapter “Error
messages flash unit”)
47. Flash test (In order to test the flash, press
the release button (44) or the test button
(47).)
48. Flash intensity
49. Flash intensity normal
50. Main switch ON (lights up) / OFF
3.6 LED illumination
•The LED illumination head is made up of an LED illumination unit, a power
supply, an optical light guide set for background illumination and an illumination
control.
• The two-core connection cable between the power supply and illumination head
transmits both the supply current for the LED as well as signals for
communication between the power supply and illumination.
• The light intensity of the slit and background illumination can be regulated
continuously (without increments) using the illumination controllers. These can
be connected using a longer connection cable on the PS-LED power supply.
3.7 Overview of the LED illumination unit upper part
51. LED illumination LI 01-plus with background illumination
52. Flash tube connection
53. Flash tube
54. Filter wheel for constant illumination (LED) blue filter
55. Optical light guide connection for slit and background illumination
56. Filter/diaphragm wheel for background illumination (flash). This wheel is used
to control the intensity of the flash background illumination and blue filter; see
5.4
3.8 Blue filter
The rotating wheel (54) is used to pivot the blue filter. Marking points at the same
height = blue filter is on.
3.9 Shutter
57. The shutter cable must be connected to the illumination head. This ensures
that a shutter closes when the flash is triggered, in order to protect the LED
from the intense radiation of the flash.

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3.10 Background illumination
58. Background illumination (swiveling)
3.11 Power supply
NOTE!
• Observe the respective Haag-Streit instructions for use. For further
information, please contact your Haag-Streit representative.
•This device may only be operated with PS-LED and PS-LED HSM
901 power supplies from Haag-Streit.
4 Device assembly / installation
WARNING!
•Do not modify this device without authorization of the manufacturer.
Installation and repairs may only be performed by trained
specialists.
• Contact your Haag-Streit representative for installation, repairs and
modification work on the system. The contact details are available at
www.haag-streit.com.
• Only original Haag-Streit spare parts may be used.
59. Medically approved isolating
transformer
60. Mains
61. Instrument table
62. Camera power supply
63. Printer
64. Screen
65. Personal computer
66. Illumination control IC 01
67. PS-LED or PS-LED HSM 901
68. Flash unit FU 01
69. Optional power input (also
possible with battery operation)
70. Optional camera port (saving to a
card is also possible)
71. Galvanic isolation (EN 60601-1)
72. Headrest
73. Release key
74. LED illumination
75. Mirror and diaphragm component
76. Camera
77. Local network
The initial installation of the device is conducted by an authorized service technician.
The following adjustments can be conducted by the end user:
• Regulating the clearance of the slit width controls
• Attaching/removing a camera
• Adjusting the weight compensation
4.1 Instrument base with weight compensation facility
The weight of additional accessories mounted on the microscope can be
compensated using counterbalance springs. This keeps the height adjustment of the
slit lamp easy.

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4.2 Setting the weight compensation facility
Turn the control lever (27) to its lowest position and then slacken it slightly by a
quarter turn. Swivel the microscope and illumination to the side. Apply 1-3 springs
depending on the accessory.
4.3 Switching on the compensation facility
Turn anticlockwise until the screws (12) are completely released.
4.4 Switching off the compensation facility
Turn the screws (12) clockwise until you meet resistance. Verify whether the
microscope arm springs back downwards if you push it upwards with your hand.
This will only happen if the load is already at maximum. Generally, as many
counterbalance springs should be deactivated as necessary until this spring action
occurs. The weight compensation facility is set correctly once the illumination and
microscope with the mounted accessories weigh slightly more than the
counterbalance springs.
4.5 Regulating the clearance of the slit width controls
The small screw in the centre of the right control knob (A)
allows you to regulate the friction of the turning movement
of these adjusting knobs. Turning it slightly to the right (in)
makes it harder, turning it left (out) makes it easier. It
should at least be set so hard that the slit cannot close on
its own.
4.6 Attaching/removing a camera
78. Lens barrel
79. Mirror and diaphragm component
80. Camera
81. Eyepiece
Remove the camera cover, attach the spacer ring to the camera and place the
camera on the lens barrel. If the camera is removed, the connection to the lens
barrel should be closed off with the cap intended for this purpose.
NOTE!
Consult your Haag-Streit representative for information on the supported
cameras and their connection rings.
5 Commissioning
Connect the PS-LED power supply and FU 01 flash unit to the mains.
5.1 Switching on the device
•Throw the rocker switch on the PS-LED power supply and the main switch on
the FU 01 flash unit 01 I = ’ON’. The green lamps in the rocker switches light up
when the device is switched on.
• Turn the rotating knob on the illumination control to a position between '1' and
'10'.

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6Operation
6.1 Setting the eyepieces
NOTE!
The eyepieces must be individually set prior to the first examination in
accordance with the refraction of the examiner. Insert the provided focus
test rod (82) in place of the protective cover (83) and turn its black
projection surface at a right angle to the microscope axis. Return the
illumination and microscope to the central position (0°).
Insert the 12.5 × eyepiece with double crosshair into the right eyepiece mounting in
the binocular tube. The depth of the double crosshair on the reticle corresponds to
the film/chip level. The setting is performed from the (+) side to the (-) side at low
magnification until the double crosshair comes into sharp focus.
82. Test rod
83. Protective cover
84. Sliding occluders
• Each eyepiece should be set individually by turning the knurled ocular refraction
ring with dioptre scale until the projected slit can be seen in focus. The setting is
performed from the (+) side to the (-) side at low magnification.
• The sliding occluders (84) are used to set the correct working distance for the
examiner from the eyepiece.
• Examiners who do not wear glasses: Pull the occluders out as far as they will
go.
• Examiners who do wear glasses: Push the occluders in as far as they will go.
6.2 Preparing the patient
• In order to attain a solid basis for the forehead and chin to rest on, the table
height should be selected such that the patient sits bent over forward.
• To ensure that only the part of the eye being examined is illuminated, the slit
height should be set accordingly in order to avoid distracting streaking of light.
• Applied parts which come into contact with the patient (headrest) should be
disinfected prior to every use (see instructions for use 'Headrest').
• The slit lamp must be switched off after every examination in accordance with
the 'Decommissioning' chapter.
6.3 Operating the device
WARNING!
• The device must be switched off after every use. Otherwise there is
a risk of overheating when a protective dust cover is used.
• The slit lamp BX 900 may only be operated with the Haag-Streit
Flash Unit FU 01.
• The slit illumination may only be operated with the flash tube
inserted.
• The images should only be used for documentation purposes. Only
the image in the eyepiece may be used for diagnosis.
• Use the turn screw to set the chin rest in such a way that the patient’s eyes are
at the same height as the black mark on the sides of the headrest.
• Adjust the eyepieces (41) in accordance with the examiner’s refraction by
turning the knurled rings and set the eye distance.
• Switch on the illumination by pressing the switch on the power supply.
• Adjust the height of the slit lamp by turning the control lever (27) until the light
beam and microscope axis are at eye level.
• The magnification of the stereo microscope is changed using the rotary knob on
the magnification changer (5).
• The rigid control lever (27) gently inclined towards the examiner can be used to
push the entire device until the slit appears approximately focused on the
cornea. This initial setting is verified with the naked eye. Fine tuning is
performed by tilting the control lever while observing via the stereo microscope
(18).
• The slit width is set left or right with the rotating knob (11), as is the angle
between the stereo microscope and illumination.

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• The slit image can be set vertically, horizontally or as diagonal as required by
turning the illumination facility on the handle (15) (locking points at 45°, 90° and
135°; stops at 0° and 180°; scale in 5° increments).
• To ensure that unimpeded binocular fundus examination is also possible at
lateral angles of between 3° and 10°, a short mirror is used, the illumination
turned 90° using the locking screw (15) and tilted in 5° steps using the latch
(23), and the illumination and microscope turned to the central position (0°).
• Front lenses and contact lenses are used to examine the ocular fundus.
Diffuse illumination:
• Connecting the diffusor (13) upstream creates diffused illumination. This allows
monitoring of the overview and can be used to capture the overview.
Indirect illumination:
• For observation in regredient light (indirect illumination), the centring screw (22)
is loosened in order to move the slit image out of the centre of the visual field.
Tightening the screw centres the slit image again.
Slit tilting:
• The latch (23) can be used to tilt the illumination in 5° steps. This creates an
angled light beam during horizontal slit orientation. Tilting the slit enables reflex-
free examination with contact lenses (fundus and gonioscopy) and magnifying
lenses.
6.4 Background illumination (flash)
When the flash is triggered, the light is
transferred to the background illumination by a
light guide.
100% open
50% open
25% open
10% open
5% open
0% open
Blue filter
6.5 Photo diaphragm pre-selection
85. Rotating knob for diaphragm pre-selection
You may select between levels 1 through 5,
each with an increasingly smaller aperture. The
size of the interval is equivalent to one f-stop.
Level 1 = largest aperture
(smallest depth of field)
Level 5 = smallest aperture
(largest depth of field)
86. Rotating knob for diaphragm actuation
Turning one of the two knobs on the right and left allows you to close the
diaphragms to the preset aperture during observation in order to get a preview of the
expected depth of field.
6.6 Setting the filters & diaphragms
a. Open
b. Grey filter (10%)
c. Red removal filter
d. Reserve opening for filter of choice ø 15 mm (0 / –0.2), thickness 2.5 mm
e. Fixation star (predominantly used for fixation examination of cross-eyed
children with amblyopia)
f. Apertures of ø 8, 5, 3, 2, 1 and 0.2 mm
g. Display of slit length adjustment from 1 to 8 mm
h. Blue filter

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6.7 Fixation star
• Turning the diaphragm disc as far as it will go to the left switches
on the fixation star and the symbol "S" appears in the window. In
some examinations of the fundus, this star is projected onto the
ocular fundus and is also visible to the patient, who is asked to
focus on the centre hole of the star. This allows the examiner to
see where the patient's vision is most focused.
• A typical use of the fixation star is during laser treatments close to
the macula. Similarly, it is also possible to identify
microstrabismus with the projection of the fixation star. The
fixation star is usually used with an upstream red removal filter.
6.8 Microscope and eyepiece
87. Front lens
88. Rotary knob displaying the set
magnification
89. 5-level magnification changer (Galilei
system)
90. Knurled ring for bayonet connector
91. Binocular tube with convergent view, pupil
distance can be set from 52 to 78 mm
92. Eyepiece 12.5 × / field of vision ø 16 mm
93. Index (white point)
94. Knurled ring with dioptre scale for setting
the refraction of the examiner (± 7 D)
95. Sliding occluder (for people who wear
glasses)
6.9 Operating the Flash unit FU 01
Capture frequency ‘normal’
Captures 1 to 10 in a 1-second cycle
Captures 11 to 20 in a 2-second cycle
Captures 21 to 30 in a 3-second cycle
NOTE!
A pause of 210 seconds will follow.
Capture frequency ‘high’
Captures 1 to 10 in a 1-second cycle
Captures 11 to 15 in a 2-second cycle
Captures 16 to 20 in a 3-second cycle
Captures 21 to 30 in a 5-second cycle
WARNING!
After turning off the FU 01 flash unit, wait at least 2 minutes before
turning it back on!
NOTE!
A pause of 210 seconds will follow.

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6.9.1 Error messages for flash unit FU 01
Symbols LED Sound
Wait
• Let the flash tube cool off
-
Folding mirror inoperative
• Connect cable
• Make sure that the plug is seated properly
Red Long beep
Camera not ready
• Switch on camera
• Empty image memory
• Take camera out of sleep mode
• Connect cable
• Make sure that the plug is seated properly
Red Long beep
Flash inoperative
• Close flash slider
• Change flash tube
• Connect cable
Red Long beep
NOTE!
Once the error in question has been rectified, the visual warning signal
is deleted by pressing the release button. The device will then be back
in operation.
All red LEDs are flashing (electronic
defect)
GENERAL ALARM
• Contact your Haag-Streit
representative.
7 Decommissioning
Throw the rocker switch on the PS-LED power supply and the main switch on the
FU 01 flash unit 01 I = ’OFF’. The green lamps in the rocker switches stop lightning
when the device is switched off.
NOTE!
Disconnect the power supply from the mains if you do not intend to use
it for an extended period of time.
8 Technical data
8.1 Slit illumination
NOTE!
Detailed information regarding the radiation can be provided on request.
Spectral range slit illumination 400 to 750 nm
Spectral range background illumination 400 to 750 nm
Slit image width 0 – 8 mm continuous
Slit image length 1 – 8 mm continuous
Illumination field circle ø 8 / 5 / 3 / 2 / 1 / 0.2 mm
Test mark With fixation star
Slit image rotatability ± 90°
Swiveling of the slit illumination to the
microscope axis
Horizontal ± 90°, vertical 0 – 20°
Filters Blue, red removal (green), grey
(10%).
NOTE!
(Further information available in the LED illumination LI 900 instructions
for use)

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8.2 Stereo microscope
Stereo angle: 13°
Magnification changer: 6.3 × / 10 × / 16 × / 25 × / 40 ×
Ocular magnification: 12.5 ×
Range of adjusting eye-pieces: +7 to −7 dioptres
Pupil distance: 52 – 78 mm
Total magnification: 6.3 × / 10 × / 16 × / 25 × / 40 ×
Object field ø in mm: 32.0 / 20.0 / 12.7 / 8.0 / 5.1
8.3 Instrument base
Operation: Single-handed operation of control lever in 3
dimensions
Adjustment of instrument
base:
100 mm (length)
100 mm (side)
30 mm (height)
8.4 Dimensions
Weight: 14.8 kg (without power supply, headrest and options)
Dimensions L × W × H: 370 mm × 332 mm × 800 mm
8.5 Flash illumination unit FU 01
Spectral range slit flash illumination 400 to 750nm
Spectral range background flash illumination 400 to 750nm
NOTE!
Detailed information regarding the radiation can be provided on request.
Flash capacitor capacity 'normal' 200 Ws
'high' 400 Ws
Flash frequency See chapter 'Operating the Flash unit FU 01'
Mains connection a) 115 V, 60 Hz
b) 230 V, 50 Hz
Mains fuses a) 2 × T10AH, 250V
b) 2 × T6.3AH, 250V
Flash unit fuse 1 × T5AL, 250V
Power consumption 25 VA, peak 2.6 kVA
8.6 Mirror and diaphragm component
Pre-set diaphragms 5 different diaphragms
Max. depth of focus on object see Table (a)
Depth of focus in air
This depends on the diaphragm and magnification settings. In the transparent media
of the eye, the values increase by approx. 35% (refractive index of the eye media).
(Table a)
Field of depth of field (+/- in mm) with diaphragm
12356
6.3 × 1.3 1.8 2.6 3.6 5.2
10 × 0.5 0.7 1 1.4 2
16 × 0.2 0.3 0.4 0.5 0.8
25 × 0.1 0.1 0.15 0.2 0.3
40 × 0.05 0.05 0.05 0.1 0.15

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(Table b)
Magnification at chip level Object size with chip size 15 × 22.4 mm
6.3 × 0.63 × 23.2 × 34.6 mm
10 × 1 × 14.6 × 21.9 mm
16 × 1.6 × 9.3 × 13.8 mm
25 × 2.5 × 5.8 × 8.7 mm
40 × 4 × 3.7 × 5.5 mm
Field of view of the object
Circle: The field of view of the object observed through the microscope's
eyepiece.
Rectangle: Area of photograph.
8.7 Lens barrel
Focal length: f 170 mm
8.8 Camera
NOTE!
The camera is to be set to a shutter time of 1/60 s in MANUAL operating
mode. The instruction for use for the camera must be followed for this
purpose.
9 Maintenance
WARNING!
•Do not modify this device without authorization of the manufacturer.
Installation and repairs may only be performed by trained
specialists.
• Contact your Haag-Streit representative for installation, repairs and
modification work on the system. The contact details are available at
www.haag-streit.com.
• Only original Haag-Streit spare parts may be used.
The LED illumination can be operated maintenance-free for its entire service life.
9.1 Device inspection
In order to correctly check the slit lamp, proceed as follows:
• Insert the test rod into the radial movement bearing, whilst at the same time
aligning the surface to the microscope at a right angle.
• Set the slit length to 8 mm.
• Set the illumination intensity to 50%.
• Set the magnification in the microscope to max.
• Set the eyepieces in such a way that the test rod is in sharp focus. In doing so,
turn the ocular from the (+) to the (-) side.
• For all magnifications, the structure of the test rod must be shown in sharp
focus.
• Close the slit edges to approx. 0.5 mm. The edges must be shown in sharp
focus.
• Open the slit edges completely and turn the test rod by 45°, the sharp area must
be in the centre of the test rod.
9.1.1 Testing the flash unit
In order to test the flash, press the release button (44) or the test button (47).

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9.2 Changing the flash tube
WARNING!
• After turning off the FU 01 flash unit,
wait at least 15 seconds before
opening the slide!
•Do not touch the glass body of the
flash tube.
96. Coupling slide
97. Protective plug
98. Flash tube
• Slide the coupling slide upwards.
• If the split lamp is new, remove the protective
plug from the flash tube housing.
• Remove the defective flash tube.
• Insert the tube without touching the glass.
• Slide the coupling slide back downward until it
stops in place.
NOTE!
Only original Haag-Streit flash tubes may be used.
9.3 Servicing
To guarantee a long service life, the device must be cleaned weekly as described
and protected with the dust cover when not in use. We recommend having the
device inspected once a year by an authorized service technician.
9.4 Replacing the fuses
WARNING!
• The mains cable must be disconnected from the mains before the
cover is screwed on.
• Only fuses of the type indicated in the technical data may be used.
• Remove the cover (99) by loosening the two screws (100).
9.4.1 Mains fuses:
• Remove the mains plug (102), remove the fuse holder (103) and replace the
fuses (fuse type according to the technical data).
• Insert fuse holder (103) and attach mains plug (102).
9.4.2 Flash unit fuse:
• Remove the mains plug (102), remove the fuse holder (101) and replace the
fuses (fuse type according to the technical data).
• Insert fuse holder (101) and attach mains plug (102).
• Close the cover (99) by applying the two screws (100) and plug the mains cable
into the mains.