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Related Experiment Videos

Predicting the ideal implant size before enucleation

S A Kaltreider1, J L Jacobs, M O Hughes

  • 1Department of Ophthalmology, University of Virginia, Charlottesville, USA.

Ophthalmic Plastic and Reconstructive Surgery
|February 9, 1999
PubMed
Summary

A-scan ultrasonography of the fellow eye accurately predicts implant size for anophthalmic sockets, improving volume replacement and reducing deformities. This method helps achieve optimal surgical outcomes.

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Area of Science:

  • Ophthalmology
  • Biomedical Engineering

Background:

  • Anophthalmic socket volume replacement is crucial for aesthetic and functional outcomes.
  • Accurate implant sizing is essential to prevent complications like enophthalmos and superior sulcus deformity.

Purpose of the Study:

  • To compare implant/prosthesis volume with enucleated eye volume in anophthalmic sockets.
  • To evaluate A-scan ultrasonography for predicting ideal implant size before enucleation.

Main Methods:

  • Retrospective analysis of 59 anophthalmic patients.
  • A-scan ultrasonography of the fellow eye to estimate removed volume.
  • Measurement of enophthalmos and superior sulcus deformity.

Main Results:

  • Inadequate volume replacement (<100%) correlated with greater enophthalmos and superior sulcus deformity.

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  • A-scan data indicated larger implants were needed in 76.3% of patients with <100% volume replacement.
  • 63% of adult patients could have accommodated larger implants for 80% volume fill.

    • Conclusions:

    • A-scan ultrasonography of the fellow eye is a valuable tool for preoperative implant size prediction.
    • Optimal volume replacement can be achieved with accurate pre-surgical planning.
    • Improved implant sizing leads to better aesthetic and functional results in anophthalmic patients.