title: Combined 50- and 20-MHz frequency ultrasound imaging in intermediate uveitis.
abstract: OBJECTIVE
  To evaluate the information provided by multifrequency ultrasound examination in patients with intermediate uveitis.
  
  
  METHODS
  Prospective observational case series.
  
  
  METHODS
  High-resolution ultrasonography with 50- and 20-MHz frequency immersion probes was performed in seven eyes of five young patients with clinical diagnosis of intermediate uveitis.
  
  
  RESULTS
  Exudative material over the inferior pars plana and peripheral retina (snowbank) was found in all eyes with 50- and 20-MHz probe, although resolution of the latter was poorer. The 50-MHz imaging was superior for visualization of angle structures and details of pars planitis; the anterior vitreous involvement and cyclitic bands were better shown with the 20-MHz probe, which could also evidence cystoid macular edema.
  
  
  CONCLUSIONS
  Ultrasound examination with both 50- and 20-MHz frequency probes can detect the typical snowbank in intermediate uveitis and be useful in eyes with small pupil, dense vitreitis, or both, especially before pars plana vitrectomy or cataract surgery.
authors: Department of Neurosciences-Ophthalmology, University of Padua, Via Giustiniani 2, Padua 35128, Italy. daniele.doro@unipd.it
authors: Daniele
authors: D
authors: Doro
authors: Antonio
authors: A
authors: Manfrè
authors: Velika
authors: V
authors: Deligianni
authors: Antonio G
authors: AG
authors: Secchi