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Misleading axial length measurements with the IOLMaster due to a dense posterior vitreous surface membrane and a macular edema in a diabetic patient

  • Christoph Fidel MayerEmail author
  • Navid Ardjomand
  • Werner Wackernagel
  • Michaela Velikay-Parel
Letter to the Editor
  • 166 Downloads

Dear Editor,

Exact biometry is an essential component in cataract surgery to obtain accurate refractive results [1]. The IOLMaster® is a precise and common instrument to obtain axial length [2, 3, 4, 5]. We describe a case of a patient with diabetic retinopathy in which the IOLMaster® was not able to determine an axial length. Clear signals from a dense posterior membrane as well as from retinal pigment epithelium (RPE) and macular edema were received.

A 46-year-old female with severe proliferative diabetic retinopathy on both eyes was referred to our department. Vision was 20/25 in the right eye and 20/200 in the left eye. A combined vitrectomy with cataract surgery was planned, and axial length measurements were taken with the IOLMaster® (Vers.: 3.01.0294; Zeiss, Germany).

Measurements on the right eye revealed different values—all with SNR greater than 2.0, an indicator for a valid reading [ 6]. Medians of the values were 21.28 mm (range 21.25 to 21.28 mm, total of eight...

Keywords

Diabetic Retinopathy Retinal Pigment Epithelium Macular Edema Axial Length Proliferative Diabetic Retinopathy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgment

We thank Dr. A. Borkenstein for providing clinical data.

Conflict of interest

None of the authors have any financial/conflicting interests or funding source to disclose.

References

  1. 1.
    Attas-Fox L, Zadok D, Gerber Y, Morad Y, Eting E, Benamou N, Pras E, Segal O, Avni I, Barkana Y (2007) Axial length measurement in eyes with diabetic macular edema: a-scan ultrasound versus IOLMaster. Ophthalmology 114:1499–1504PubMedCrossRefGoogle Scholar
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    Lege BA, Haigis W (2004) Laser interference biometry versus ultrasound biometry in certain clinical conditions. Graefes Arch Clin Exp Ophthalmol 242:8–12PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Christoph Fidel Mayer
    • 1
    Email author
  • Navid Ardjomand
    • 1
  • Werner Wackernagel
    • 1
  • Michaela Velikay-Parel
    • 1
  1. 1.Department of OphthalmologyMedical University Graz, AustriaGrazAustria

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