Clinical Techniques

Biometry

  • To predict postoperative refraction for an IOL implant

Note

The formulae only predict the post-operative spherical equivalent

  • Partial coherence laser interferometry is superseding ultrasound biometry
    • Greater accuracy
    • Greater reproducibility
    • Measures true foveal axial length
  • Principles of Zeiss IOLMaster (partial coherence, non-contact…
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Ultrasound