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Comparative Study
. 2015 Nov;112(11):917-22.
doi: 10.1007/s00347-015-0076-9.

[Rebound tonometry after vitreoretinal surgery]

[Article in German]
A Rosentreter  1   2 , R Hoerster  3 , T Schick  3 , N Eter  4 , T S Dietlein  3 , S Fauser  3
Affiliations
Comparative Study

[Rebound tonometry after vitreoretinal surgery]

[Article in German]
A Rosentreter et al. Ophthalmologe. 2015 Nov.

Abstract

Purpose: The aim of this study was to analyze the practicability and comparability of the Icare rebound tonometer (RT) versus the Schiötz indentation tonometer (SIT) and the Goldmann applanation tonometer (GAT) for measuring intraocular pressure (IOP) in patients after pars plana vitrectomy (PPV).

Methods: A total of 100 eyes from 100 patients who underwent vitreoretinal surgery in the Department of Ophthalmology, University of Cologne were included in this prospective analysis. The IOP was measured using RT preoperatively, on the day of surgery and 2 days after surgery, using SIT on the day of surgery and GAT preoperatively and 2 days after surgery. For the evaluation eyes were divided into subgroups with respect to the endotamponade selected and the IOP level.

Results: The mean preoperative IOP for all enrolled eyes was 15.4 ± 8.0 mmHg for RT and 16.1 ± 7.9 mmHg for GAT. Bland-Altman analysis revealed a bias between RT and GAT of - 0.6 mmHg. Bland-Altman analysis for the postoperative course of all eyes revealed a bias of 3.0 mmHg between RT and SIT on the day of surgery and no bias between RT and GAT in the further postoperative follow-up.

Conclusion: Rebound tonometry seems to provide precise IOP values after vitreoretinal surgery. Divergence from SIT values on the day of surgery is presumably due to a general tendency of SIT to underestimate IOP values. Therefore, RT can be used in the clinical routine after vitreoretinal surgery as an alternative to GAT.

Keywords: Endotamponade; Goldmann applanation tonometry; Intraocular pressure; Pars plana vitrectomy; Schiötz indentation tonometry.

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