lenstar LS 900 - Safety; Areas of application of the device; Patient population; Ambient conditions

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DEUTSCHENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS
PORTUGUÊS
SVENSKA
DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS
PORTUGUÊS
SVENSKA
© HAAG-STREIT AG, 3098 Koeniz, Switzerland – HS-Doc. no. 1500.7220055.04100 – 10. Edition / 2015 – 06
INSTRUCTIONS FOR USE
Biometer
Lenstar LS 900
®
10. Edition / 2015 – 06
Introduction
Thank you for choosing a HAAG‑STREIT device. Provided you comply careful‑
ly 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 pro-
duct. It contains important information regarding the safety of the user
and patient.
NOTE!
Federal law restricts this device to sale by or on the order of a physician
or licensed practitioner.
Intended use
The LS 900 is a non-invasive, non-contact OLCR (optical low-coherence reectom‑
etry) biometer used for obtaining ocular measurements and performing calculations
to assist in the determination of the appropriate power and type of IOL (intraocular
lens) for implantation after removal of the natural crystalline lens. The LS 900 mea‑
sures:
• Axial eye length
• Corneal thickness
• Anterior chamber depth
• Aqueous depth
• Lens thickness
• Corneal curvature
• Radii for at and steep meridian
• Axis of the at meridian
• White‑to‑white distance
• Pupil diameter
Contents
1. Safety .....................................................................................4
1.1 Areas of application of the device .............................................................................4
1.2 Patient population .....................................................................................................4
1.3 Ambient conditions ....................................................................................................4
1.4 Shipment and unpacking...........................................................................................4
1.5 Installation warnings..................................................................................................4
1.6 Operation, environment.............................................................................................4
1.6.1 Plausibility of the measurements ..............................................................................5
1.6.2 IOL calculation ..........................................................................................................6
1.6.3 References ................................................................................................................6
1.6.4 IOL constants ............................................................................................................6
1.6.5 IOL constants derived using data from an immersion ultrasound biometer ..............7
1.6.6 IOL constants derived from data from a contact ultrasound biometer.......................7
1.7 Optical radiation ........................................................................................................7
1.8 Disinfection................................................................................................................7
1.9 Warranty and product liability ....................................................................................7
1.10 Symbols ....................................................................................................................7
2. Introduction ...........................................................................8
2.1 Basic construction .....................................................................................................8
2.2 Examination components (LS 900) ...........................................................................8
2.3 Control component (PC) ...........................................................................................9
2.4 Instrument table (option) ...........................................................................................9
3. Appliance assembly / installation ........................................9
3.1 Computer connection ................................................................................................9
3.2 Installing a short forehead band when using the
optional T‑Cone .........................................................................................................9
4. Operation .............................................................................10
4.1 Position of patient during measurement..................................................................10
4.2 Measuring with LENSTAR APS (optional) ...............................................................10
4.3 Optional T‑Cone ......................................................................................................10
4.3.1 Fitting the optional T‑Cone ......................................................................................10
4.3.2 Measuring with the optional T‑Cone ........................................................................11
4.3.3 Removing the optional T‑Cone ................................................................................11
4.4 Fixation....................................................................................................................11
4.5 Measured variables .................................................................................................11
4.5.1 A‑Scan ....................................................................................................................11
4.5.2 Keratometry.............................................................................................................12
4.5.3 White‑to‑white distance ...........................................................................................12
4.5.4 Pupillometry & visual axis .......................................................................................12
01-IFU_LS900-7220055-04100_eng.indd 2 17.06.2015 10:55:56