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Görig, Christiane; Coenen, Roel T. I.; Stades, Frans C.; Djajadiningrat-Laanen, Sylvia C.; Boevé, Michael H.

Comparison of the use of new handheld tonometers and established applanation tonometers in dogs

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  • Medientyp: E-Artikel
  • Titel: Comparison of the use of new handheld tonometers and established applanation tonometers in dogs
  • Beteiligte: Görig, Christiane; Coenen, Roel T. I.; Stades, Frans C.; Djajadiningrat-Laanen, Sylvia C.; Boevé, Michael H.
  • Erschienen: American Veterinary Medical Association (AVMA), 2006
  • Erschienen in: American Journal of Veterinary Research
  • Sprache: Nicht zu entscheiden
  • DOI: 10.2460/ajvr.67.1.134
  • ISSN: 0002-9645
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Abstract</jats:title> <jats:p><jats:bold>Objective—</jats:bold>To examine the practical aspects, accuracy, and reproducibility of 2 new automatic handheld tonometers in dogs and compare them with results for 2 established applanation tonometers.</jats:p> <jats:p><jats:bold>Animals—</jats:bold>15 freshly enucleated canine eyes for manometric evaluation and 20 conscious research dogs, 20 client-owned dogs, and 12 dogs with acute glaucoma for clinical tonometry.</jats:p> <jats:p><jats:bold>Procedure—</jats:bold>Calibration curves were determined for all 4 tonometers on 15 enucleated canine eyes. Intraocular pressure (IOP) was measured with each tonometer consecutively in conscious dogs, with the MacKay-Marg applanation tonometer as the reference device. Measurements were repeated in 20 sedated dogs. An induction-impact tonometer was evaluated clinically on dogs with acute glaucoma. Additionally, measurements obtained by an experienced and an inexperienced examiner and with or without use of topical anesthesia were compared.</jats:p> <jats:p><jats:bold>Results—</jats:bold>The portable pneumatonometer was cumbersome and time-consuming. Compared with results for the reference applanation tonometer, and confirmed by manometry, the portable pneumatonometer increasingly underestimated actual IOP values with increasing IOP. The induction-impact tonometer provided accurate and reproducible measurement values. There was a significant strong correlation between the IOP values obtained by the 2 examiners (<jats:italic>r</jats:italic><jats:sup>2</jats:sup>, 0.82) and also with or without topical anesthesia (<jats:italic>r</jats:italic><jats:sup>2</jats:sup>, 0.86). In dogs with glaucoma, the fitted line comparing values for the reference applanation tonometer and induction-impact tonometer closely resembled an ideal 1:1 relationship.</jats:p> <jats:p><jats:bold>Conclusions and Clinical Relevance—</jats:bold>Use of the portable pneumatonometer in dogs appears to have disadvantages. The induction-impact tonometer appears to provide a promising alternative to the use of applanation tonometers in dogs.</jats:p>
  • Zugangsstatus: Freier Zugang