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  Zeiss IOLMaster®
Online Users Instruction Manual V.5
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IOL Power Calculations
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IOLMaster Manual V.5
Update Installation
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Zeiss IOLMaster Customer Service: 1-877-486-7473 ext. 4030

IOLMaster — Update Installation.

The following is a description of the installation of the software upgrade to version 5, as well as the calibration of the keratometer adjustment aid.

To install the software, carry out the following steps:

  1. No USB device may be connected to the IOLMaster while the update software is being installed!
  2. Switch the IOLMaster on.
  3. Wait until all internal system tests have been performed and the Patient Manager appears.
  4. Open the CD-RW drive on the left side of the IOLMaster and insert the update CD.
  5. To launch the update procedure, click on Setup in the Options pull-down menu and select Update.
  6. Follow the instructions on the screen. After installation the IOLMaster will be automatically shut down and then booted up again.
  7. Remove the upgrade CD from the drive. Once the IOLMaster has booted up and a message prompting a check of the calibration appears, the software update has been completed.

If you wish to switch off the IOLMaster after the software update, click on the EXIT icon and confirm with OK. Do not switch the IOLMaster off at the power switch until the cursor on the screen can no longer be moved using the touchpad (for IOLMaster with black power switch) or the screen is completely black (IOLMaster with green illuminated power switch).

Please check the current software version of your IOLMaster after restarting. For this purpose, click on About IOLMaster in the ? pulldown menu.

After updating to version 5, patients already measured on the same day with version 4 cannot be re-measured. Patient measurements should therefore be completed before the update is carried out. These patients can be measured with version 5 in a completely new session on the following day.

The mean value of single measurements taken with version 4 will continue to be displayed. The composite signal and composite reading are not determined here.

Calibration instructions for the keratometer adjustment aid (traffic light display)

  1. If the Advanced Technology Software version 5 has been installed on your device and you wish to use the keratometer adjustment aid (traffic light display), it must first of all be calibrated.
  2. Switch the IOLMaster on.
  3. Wait until all internal system tests have been completed and the Patient Manager appears upon confirming the calibration prompt with OK.
  4. In the Options pull-down menu, click on Setup and use the Program Settings to display the Program dialog. Activate the Adjustment aid here (and Automatic, if you wish).
  5. Create a new patient with New.
  6. Change to keratometer mode by clicking the appropriate icon or pressing the <K> key.
  7. Follow the instructions on the screen.

    The test eye must be clean. If the test eye for the IOLMaster is not available, abort the calibration process with Cancel. The Adjustment aid will then be deactivated in the Program Settings dialog and can no longer be used.

    If the software is unable to perform the calibration (message described under item 10 is repeatedly displayed), the cause may be inadequate room lighting. It is recommended that the front panel and test eye be shielded from direct or lateral light. The best results will be obtained when the examination room is slightly darkened.

  8. Then you will be prompted to repeat the process once again.
  9. If the calibration process was successful, a message to this effect will be displayed. The keratometer adjustment aid (traffic light display) can now be used to position the keratometer at the optimum measurement setting.
  10. If a message appears stating that variance between the calibration values of the two calibrations was too wide, the entire calibration process must be repeated from Step 7 onwards.

IOLMaster Help
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Zeiss IOLMaster® Tutorial Version 5

Zeiss IOLMaster®

Optical Biometry

Intraocular Lens Power Calculations


East Valley Ophthalmology
5620 East Broadway Road
Mesa, Arizona 85206

Tel: +1-480-981-6111
FAX: +1-480-985-2426

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