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Intraocular pressure and ocular pulse amplitude using dynamic contour tonometry and contact lens tonometry

Hoffmann, Esther M ; Grus, Franz-H ; Pfeiffer, Norbert

BMC ophthalmology, 2004-03, Vol.4 (1), p.4-4, Article 4 [Periódico revisado por pares]

England: BioMed Central Ltd

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  • Título:
    Intraocular pressure and ocular pulse amplitude using dynamic contour tonometry and contact lens tonometry
  • Autor: Hoffmann, Esther M ; Grus, Franz-H ; Pfeiffer, Norbert
  • Assuntos: Aged ; Blood Pressure - physiology ; contact lens tonometry ; Contact Lenses ; Dynamic contour tonometry ; glaucoma ; Goldmann applanation tonometry ; Humans ; Intraocular Pressure - physiology ; Middle Aged ; ocular pulse amplitude ; Tonometry, Ocular - instrumentation ; Tonometry, Ocular - methods
  • É parte de: BMC ophthalmology, 2004-03, Vol.4 (1), p.4-4, Article 4
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: The new Ocular Dynamic Contour Tonometer (DCT), investigational device supplied by SMT (Swiss Microtechnology AG, Switzerland) allows simultaneous recording of intraocular pressure (IOP) and ocular pulse amplitude (OPA). It was the aim of this study to compare the IOP results of this new device with Goldmann tonometry. Furthermore, IOP and OPA measured with the new slitlamp-mounted DCT were compared to the IOP and OPA measured with the hand-held SmartLens,a gonioscopic contact lens tonometer (ODC Ophthalmic Development Company AG, Switzerland). Nineteen healthy subjects were included in this study. IOP was determined by three consecutive measurements with each of the DCT, SmartLens, and Goldmann tonometer. Furthermore, OPA was measured three times consecutively by DCT and SmartLens. No difference (P = 0.09) was found between the IOP values by means of DCT (mean: 16.6 mm Hg, median: 15.33 mm Hg, SD: +/- 4.04 mm Hg) and Goldmann tonometry (mean: 16.17 mm Hg, median: 15.33 mm Hg, SD: +/- 4.03 mm Hg). The IOP values of SmartLens (mean: 20.25 mm Hg, median: 19.00 mm Hg, SD: +/- 4.96 mm Hg) were significantly higher (P = 0.0008) both from Goldmann tonometry and DCT. The OPA values of the DCT (mean: 3.08 mm Hg, SD: +/- 0.92 mm Hg) were significantly lower (P = 0.0003) than those obtained by SmartLens (mean: 3.92 mm Hg, SD: +/- 0.83 mm Hg). DCT was equivalent to Goldmann applanation tonometry in measurement of IOP in a small group of normal subjects. In contrast, SmartLens (contact lens tonometry) gave IOP readings that were significantly higher compared with Goldmann applanation tonometer readings. Both devices, DCT and SmartLens provide the measurement of OPA which could be helpful e.g. for the management of glaucoma.
  • Editor: England: BioMed Central Ltd
  • Idioma: Inglês
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