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Ophthalmology Summit 2019 Ophthalmology Case Reports | Volume 3
Note:
OF EXCELLENCE
IN INTERNATIONAL
MEETINGS
YEARS
March 27-28, 2019 | Amsterdam, Netherlands
2nd GLOBAL
OPHTHALMOLOGY SUMMIT 2019
Page29
REPEATABILITY AND INTER-EXAMINER RELIABILITY OF NON-CORNEAL
TRANSPALPEBRAL SCLERAL TONOMETRY USING DIATON
Margarita Rozhdestvenskaya 1, Alexej Dashevsky 2, Ing habil2 and Konstantin Kotliar3
1 Tonom GmbH, Germany
2 Ophthalmology Center, Germany
3 University of Applied Sciences, Germany
The present study is concerned with the reproducibility and inter-examiner reliability of intraocular pressure
measurement with Diaton tonometer as well as with the possibility to use the procedure while outpatient
management. The NON-corneal trans-palpebral Diaton tonometry is indicated for corneal diseases (ulcers, ker-
atitis, keratoconus) and postoperative conditions of the cornea. The handy, small “Diaton” tonometer is also
used in bed rest patients. Results of Diaton tonometer measurements: [Median (1st quartile - 3rd quartile)]. For
the tree examiner difference was not significant (p = 0.645, Kendall’s W-test, power> 0.8). The inter- examiner
variability coefficient was 7% (4% -9%). The intra-class correlation coefficient and associated 95% confidence
interval were 0.935 (0.871-0.971) (p <0.001). Moreover, for separately considered GAT control group no signif-
icant differences in Diaton tonometer measurement results was found: GAT values: 15.5 (14.0-17.0) mmHg.
Diaton values - Examiner 1: 16.0 (15.0-19.0) mmHg; Examiner 2: 16.0 (14.8-19.3) mmHg; Examiner 3: 16.5 (13.0-
19.0) mmHg (p = 0.530, Kendall’s W-test, power> 0.8 Our results showed that NON-corneal Diaton tonometry
is a reliable method of intraocular pressure measurement, which is not depended from the biomechanical
parameters of the cornea. In particular, Diaton tonometer allows determine IOP pressure values in patients
who have contraindications to standard tonometry methods (eg, ulcer). For correct Diaton tonometer handling
participation in a special user course is recommended. It goes without saying that examiners must familiarize
themselves with the measurement procedure: a learning phase is also
Margarita Rozhdestvenskaya et al., Ophthalmol Case Rep 2019, Volume 3
Margarita Rozhdestvenskaya has an expertise in regulatory strategies, medical device registration standards, quality
management system compliance and in-country regulatory representation. From 2013 she is a director of the Tonom
GmbH that is the European Authorized Representative for Diaton technology. Tonom GmbH fulfills the obligations of
the Medical Device Directive MDD 93/42/EEC and acts as legal entity towards the European authorities as well as pro-
viding additional services regarding the technical information of the medical devices within the European Community.
Her expertise and proficiency as well as interest to science, innovation and a culture of operational excellence contrib-
ute to offer technology, services and support in order to improve the quality of people’s lives.
BIOGRAPHY