title: [Assessment of the Quantel Medical 20-Mhz Ultrasound Cinescan in intraocular measurements].
abstract: OBJECTIVE
  Evaluation of the Quantel Medical 20-MHz Ultrasound Cinescan using a closed transducer in intraocular measurements and its reproducibility.
  
  
  METHODS
  We measured sulcus-to-sulcus distance of 40 control eyes using the20-MHz Cinescan. Then we compared the sonography to the Oculus Pentacam based on the Scheimpflug principle in the measurements of anterior chamber depth, cornea-to-implant distance, and implant-to-crystallin lens distance in patients who underwent phakic implantation (56 eyes).
  
  
  RESULTS
  With this technique, the sulcus-to-sulcus distance can be measured with a reproducibility of 86%-88% (p<0.05). The authors show that the corneal diameter is not correlated with the sulcus measurement (R=24%, p<0.05).
  
  
  CONCLUSIONS
  Several techniques are used to quantify anterior segment biometry. Some of these methods, such as White-to-White, are too empirical and others, such as the Scheimpflug camera - for example the EAS-1000 (Nidek) - or high-frequency ultrasound - Ultrasound BioMicroscopy UBM P45 (Paradigm) - are too expensive. The 20-MHz Cinescan has good reproducibility and provides easier access to anterior segment biometry.
  
  
  CONCLUSIONS
  The 20-MHz Cinescan appears to be an accessible technique that may become a useful tool in the refractive surgery of the phakic intraocular lens.
authors.affiliation: Service d'Ophtalmologie, CHU, Brest.
authors.forename: S
authors.initials: S
authors.lastname: Lebaillif
authors.forename: B
authors.initials: B
authors.lastname: Roussel
authors.forename: B
authors.initials: B
authors.lastname: Cochener
mesh_terms: D000328:Adult; D005123:Eye / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007910:Lenses, Intraocular; D008297:Male; D015203:Reproducibility of Results; D014463:Ultrasonography