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© HAAG-STREIT AG, 3098 Koeniz, Switzerland – HS-Doc. no. 1500.7220055.04100 – 10. Edition / 2015 – 06
1.6.5 IOL constants derived using data from an immersion
ultrasound biometer
If there are optimised IOL constants available from an immersion ultrasound biome‑
ter, they may be used as a starting point for further optimisation of IOL calculation with
the Lenstar. Differences in IOL calculation may still occur, as the keratometry data are
collected in different ways. The “User Group for Laser Interference Biometry” (ULIB) at
the University of Würzburg, Germany has published on its website a manual explain‑
ing how to correct the effect of keratometry on the IOL constants. Still, the IOL con‑
stants acquired in this way should only be used as a starting point for further optimisa‑
tion/personalisation.
1.6.6 IOL constants derived from data from a contact
ultrasound biometer
If there are optimised IOL constants available based on data from a contact ultra‑
sound biometer, they must be stringently recalculated for use with the Lenstar. The
“User Group for Laser Interference Biometry” (ULIB) at the University of Würzburg,
Germany has published on its website a manual explaining how to correct the effect
of ultrasound biometry and keratometry on the IOL constants. Constants acquired
in such a way should only be used as a starting point for further optimisation/per‑
sonalisation.
1.7 Optical radiation
WARNING!
The light from this device may be dangerous. The risk of eye damage
increases with the irradiation period. An exposure time with this device
at maximum intensity of over 100 individual measurements per patient
eye with dilated pupil per day exceeds the risk guideline value.
NOTE!
In accordance with EN 60825‑1, the limiting values for class 1 lasers
are respected when the device is used in the dened manner.
NOTE!
The device complies with the limit values for risk group 1 in accordance
with EN 62471 insofar as no more than 100 individual measurements
are performed per day and per patient’s eye with dilated pupil. If this lim‑
it value of 100 individual measurements is exceeded, the patient’s eye
may be damaged by the white illumination. (Radiance 1800 Wm
‑2
sr
‑1
)
1.8 Disinfection
NOTE!
• The device does not need to be disinfected.
• If the optional T‑Cone is used, its tip must be cleaned with max. 70% al‑
cohol after each patient.
For more information on cleaning, please refer to the ‘Maintenance’ section.
1.9 Warranty and product liability
cribed in the documents distributed with the product.
The product must be treated as described in the ‘Safety’ chapter. Improper han-
dling 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.
The optional T-Cone must be stored in its original dust cover and protected from
direct sunlight.
This product is covered by a limited warranty, which may be reviewed at
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