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Zastosuj identyfikator do podlinkowania lub zacytowania tej pozycji: http://hdl.handle.net/20.500.12128/445
Tytuł: Repeatability and Reproducibility of Intraocular Pressure and Dynamic Corneal Response Parameters Assessed by the Corvis ST
Autor: Lopes, Bernardo T.
Roberts, Cynthia
Elsheikh, Ahmed
Vinciguerra, Riccardo
Vinciguerra, Paolo
Reisdorf, Sven
Berger, Stefanie
Koprowski, Robert
Ambrosio, Renato (Jr.)
Słowa kluczowe: Forme-Fruste Keratoconus; Biomechanical Properties; Analyzer; Ectasia; Corvis ST
Data wydania: 2017
Źródło: Journal of Ophthalmology, Art. no. 8515742, (2017), s. 1-4
Abstrakt: Purpose. To assess the repeatability and reproducibility of dynamic corneal response parameters measured by the Corvis ST (Oculus, Wetzlar, Germany). Methods. One eye randomly selected from 32 healthy volunteers was examined by the Corvis ST. Three different devices were used in an alternated random order for taking three measurements at each device in each subject. Standard intraocular pressure (IOP), the biomechanical-compensated IOP (bIOP), and DCR parameters were evaluated. The within-subject standard deviation (zeta w) and coefficient of variation (CV) were assessed. Results. Regarding pressure indices, the zeta w was below 1 mmHg for repeatability (0.98 for IOP and 0.89 for bIOP) and the CV was 6.6% for IOP and 6.1% for bIOP. For reproducibility, the zeta w was around 1 mmHg (1.12 for IOP and 1.05 for bIOP) and the CV was 7.6% for IOP and 7.1% for bIOP. Most of DCR indices presented CV for repeatability below 4%. For reproducibility, the CV of most of the indices were below 6%. The deformation amplitude (DA) ratio in 1 mm and integrated radius were below 4% (1.2% and 3.8%, resp.). Conclusions. The Corvis ST showed good precision (repeatability and reproducibility) for IOP measurements and for DCR in healthy eyes.
URI: http://hdl.handle.net/20.500.12128/445
DOI: 10.1155/2017/8515742
ISSN: 2090-004X
2090-0058
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