Einflussgrößen auf die Applanationstonometrie – ein praxisorientierter Überblick

 

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Zusammenfassung

Die Applanationstonometrie stellt in der klinischen Praxis seit über 50 Jahren den Goldstandard dar. Der mittlerweile bekannteste Einflussfaktor, die zentrale Hornhautdicke, wird inzwischen allgemeinhin in der Glaukomdiagnostik berücksichtigt, auch wenn sicherlich noch andere individuelle Charakteristika der Hornhaut eine wichtige Rolle für die Interpretation der Applanationswerte spielen. Viele weitere Einflussfaktoren (Tränenfilm, Fluoreszeinmenge etc.) sind seit Jahrzehnten bekannt, sollten aber immer wieder vergegenwärtigt werden. Auch die unkorrekte Kalibrierung des Applanationstonometers ist nach derzeitiger Datenlage eine nicht zu vernachlässigende Fehlerquelle.

Abstract

Applanation tonometry has been the gold standard in clinical ophthalmology for more than fifty years. The most popular factor is central corneal thickness that is now routinely considered in glaucoma management. However, other individual features of the cornea can also play a key role for the interpretation of the applanation values. Other factors influencing applanation tonometry that have been well known for decades include tear film, fluorescein illumination etc., and should be kept in mind. According to the available literature the absence of a correct calibration cannot be neglected.

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Dr. Andre Rosentreter

Augenklinik, Universitätskliniken Köln

Joseph-Stelzmann-Str. 9

50931 Köln

Phone: ++ 49/2 21/4 78 43 00

Fax: ++ 49/2 21/4 78 43 00

Email: andre.rosentreter@googlemail.com