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  Zeiss IOLMaster®
Online Users Instruction Manual V.4
printable version
IOL Power Calculations IOL Power Calculations
Optical Biometry Optical Biometry
Lens Constants Lens Constants
Validation Guidelines
Haag Streit LENSTAR® Haag Streit LENSTAR
Zeiss IOLMaster® Zeiss IOLMaster
IOLMaster VIDEO Tutorial
IOLMaster Manual V.5 Cataract Surgery Arizona
IOLMaster Manual V.4 IOLMaster User Manual V.4
General Operation Cataract Surgery Arizona
IOL Calculations
4-Formula Calculation
IOL Database
After Refractive Surgery
Phakic Lens Implants
IOL Master Manual Download IOLMaster Checklist (pdf)
IOL Master Manual Download IOLMaster Manual V.4 (pdf)
IOL Master Manual Download IOLMaster Manual V.3 (pdf)
SIA Calculator
Physician Downloads SIA Calculator
Special Thanks

Zeiss IOLMaster Customer Service: 1-877-486-7473 ext. 4030

IOLMaster — IOL Database


I key, or the button pictured above, activates the IOL Calculation mode.

Establish Intraocular Lens Database

Once all measurements have been taken (depending on the chosen IOL power calculation formula), options may be generated for a particular intraocular lens to be implanted. Before the system can calculate IOL power calculation options, the available lens types must be entered into the database.

  • In Options - User Database, open the Password Input
  • Select the appropriate name and enter password as necessary. The database window for entering specific lens data will open (for registering a new user see User Database).

IOLMaster Software Screen Shot

  • Before the system calculates IOL options, you must enter the desired lens types into the database.

IOLMaster Software Screen Shot

  • In the lines "Name", "A Const. Manufact" and "ACD Manufact", enter the respective data of the manufacturer, from catalog or package inserts.
IOL Master warning WARNING: If the ACD constant is not available, you may click the Add button after entering the A constant.

All parameters will automatically be calculated from the A constant according to standard formula. The manufacturer's A-constants may result in refractive errors.

  • Lens Constants are personally calculated constants for the various IOL power calculation formulas, optimized for optical biometry. They must be entered/changed in the "A Const. SRKII, A Const. SRK/T, a0, a1, a2. pACD HofferQ, and SF Holladay boxes.
IOLMaster Arizona NOTE: Only lens constants optimized for optical biometry will produce accurate results. Calculating the strength of the intraocular lens to be implanted with the IOL Master does not work using the manufacturer's IOL constants, only with those specifically optimized for optical biometry (see Optimization of IOL Constants).
  • If you use lenses graded in 0.25 D intervals (in future), activate the Power 0.25/4 D radio button.
  • To add data to the database, click the ADD button
  • To delete the data of the lens type selected in the Lenses field, click the ERASE button.
  • By clicking the SET button, existing lens data will be overwritten by edited data.
  • To enter the data of the next lens, overwrite the name of the lens. Exit the User Manager by clicking on OK.

For further information:


IOLMaster Help

Zeiss IOLMaster® Tutorial Version 4

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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