Eye Doctor Arizona
Eye Surgery Arizona

  Zeiss IOLMaster®
Online Users Instruction Manual V.5
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 IOLMaster User Manual V.5
Anterior Chamber Depth
Optimum Adjustment
Error Messages
Phakic Eyes
Dry Eye
Corneal Scars
IOLMaster Manual V.4 IOLMaster User Manual V.4
IOL Master Manual Download IOLMaster Checklist (pdf)
IOL Master Manual Download IOLMaster Manual V.5.4 (pdf)
IOL Master Manual Download IOLMaster Manual V.5 (pdf)
SIA Calculator
Physician Downloads SIA Calculator
Special Thanks

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

IOLMaster — Anterior Chamber Depth
Error Messages / Incorrect Settings.

Measurement Errors

The "Error" message usually have two basic causes:

  • The results of the five internal individual measurements vary by more than 0.15 mm (very rare), or
  • The images produced (optical sections) do not contain relevant structures (normally without the edge of the crystalline lens), or disturbances are preventing their detection.

Incorrect Settings:

Defocused Image

Cataract Surgery Arizona

cataract surgery problems

If the IOLMaster is not optimally focused, the image of the fixation point will be larger and fainter. At the same time, the images of the front edge of the lens and/or the cornea may become so faint that they cannot be recognized as such. In such a case, the system displays an "Error" message and an explanatory text indicates which image details are either missing or could not be recognised correctly.

cataract surgery solutions

Improve the focus adjustment of the IOLMaster and repeat the measurement. The fixation point must be optimally focused.

IOLMaster Arizona Note: As a rule, a slight defocusing of the IOLMaster does not have a significant affect on the anterior chamber depth measurement.










IOLMaster Help

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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