Ultrasound biomicroscopy following the intraocular use of silicone oil

Claudio Azzolini, Luisa Pierro, Marco Codenotti, Francesco Bandello, Rosario Brancato

Research output: Contribution to journalArticlepeer-review


We evaluated the ultrasound biomicroscopy findings and the amount and location of silicone oil residue in anterior structures of the eye before and after silicone oil removal. We examined the anterior structures in 40 silicone oil 1000 cs-filled eyes at the end of silicone oil tamponade time (mean silicone oil tamponade duration 5.1 months), and in the same eyes after silicone oil removal. High resolution ultrasound biomicroscopy, 50 MHz transducer, 50 νm of resolution, was used. Silicone oil droplets - often not ophthalmoscopically visible - appeared as highly reflective images with after ringing effect. They were present in the anterior structures of the eye in up to 95% of eyes with silicone oil in the vitreous cavity, and in up to 87.5% after careful silicone oil removal. With ultrasound biomicroscopy it was possible to identify small silicone oil droplets with a typical morphological appearance. Once silicone oil is used in vitreoretinal surgery, its complete removal from the anterior structures of the eye is very difficult to achieve later on.

Original languageEnglish
Pages (from-to)191-195
Number of pages5
JournalInternational Ophthalmology
Issue number3
Publication statusPublished - 1995


  • silicone oil
  • ultrasound biomicroscopy
  • vitreoretinal surgery

ASJC Scopus subject areas

  • Ophthalmology


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