Abstract
Background: To examine the repeatability of intra-ocular pressure (IOP) and central corneal thickness (CCT) measurements provided by the Tono-Pachymeter NT530P (Nidek, Japan), and to assess agreement of the device with Goldmann applanation tonometry (GAT) and ultrasound pachymetry (UP). Methods: Sixty-two normal eyes of 62 subjects were included in the study. Three sessions of measurements, each consisting of three sets of measurements, were completed with each device. Repeatability was determined with the coefficient of variation (CoV) and the coefficient of repeatability (CoR) values. Agreement between devices was examined by Bland-Altman analysis and intraclass correlation coefficient (ICC) analyses. Results: The CoV and CoR for IOP values were 18.4% and 5.5 mmHg with the NT530P and 16.6% and 4.3 mmHg with the GAT respectively. On average, NT530P overestimated the IOP compared with GAT by 1.3 mmHg. The 95% limits of agreement between the methods ranged from -5.9 to +3.3 mmHg, and the ICC for average IOP measures between devices was 0.64 (P
| Original language | English |
|---|---|
| Pages (from-to) | 429-434 |
| Number of pages | 6 |
| Journal | Graefe's Archive for Clinical and Experimental Ophthalmology |
| Volume | 249 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2011 |
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Keywords
- Central corneal thickness
- Intraocular pressure
- Non-contact device
- Repeatability
- Tono-pachymeter NT530P
ASJC Scopus subject areas
- Ophthalmology
- Sensory Systems
- Cellular and Molecular Neuroscience
Cite this
Repeatability of intra-ocular pressure and central corneal thickness measurements provided by a non-contact method of tonometry and pachymetry. / Lomoriello, Domenico Schiano; Lombardo, Marco; Tranchina, Laura; Oddone, Francesco; Serrao, Sebastiano; Ducoli, Pietro.
In: Graefe's Archive for Clinical and Experimental Ophthalmology, Vol. 249, No. 3, 03.2011, p. 429-434.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Repeatability of intra-ocular pressure and central corneal thickness measurements provided by a non-contact method of tonometry and pachymetry
AU - Lomoriello, Domenico Schiano
AU - Lombardo, Marco
AU - Tranchina, Laura
AU - Oddone, Francesco
AU - Serrao, Sebastiano
AU - Ducoli, Pietro
PY - 2011/3
Y1 - 2011/3
N2 - Background: To examine the repeatability of intra-ocular pressure (IOP) and central corneal thickness (CCT) measurements provided by the Tono-Pachymeter NT530P (Nidek, Japan), and to assess agreement of the device with Goldmann applanation tonometry (GAT) and ultrasound pachymetry (UP). Methods: Sixty-two normal eyes of 62 subjects were included in the study. Three sessions of measurements, each consisting of three sets of measurements, were completed with each device. Repeatability was determined with the coefficient of variation (CoV) and the coefficient of repeatability (CoR) values. Agreement between devices was examined by Bland-Altman analysis and intraclass correlation coefficient (ICC) analyses. Results: The CoV and CoR for IOP values were 18.4% and 5.5 mmHg with the NT530P and 16.6% and 4.3 mmHg with the GAT respectively. On average, NT530P overestimated the IOP compared with GAT by 1.3 mmHg. The 95% limits of agreement between the methods ranged from -5.9 to +3.3 mmHg, and the ICC for average IOP measures between devices was 0.64 (P
AB - Background: To examine the repeatability of intra-ocular pressure (IOP) and central corneal thickness (CCT) measurements provided by the Tono-Pachymeter NT530P (Nidek, Japan), and to assess agreement of the device with Goldmann applanation tonometry (GAT) and ultrasound pachymetry (UP). Methods: Sixty-two normal eyes of 62 subjects were included in the study. Three sessions of measurements, each consisting of three sets of measurements, were completed with each device. Repeatability was determined with the coefficient of variation (CoV) and the coefficient of repeatability (CoR) values. Agreement between devices was examined by Bland-Altman analysis and intraclass correlation coefficient (ICC) analyses. Results: The CoV and CoR for IOP values were 18.4% and 5.5 mmHg with the NT530P and 16.6% and 4.3 mmHg with the GAT respectively. On average, NT530P overestimated the IOP compared with GAT by 1.3 mmHg. The 95% limits of agreement between the methods ranged from -5.9 to +3.3 mmHg, and the ICC for average IOP measures between devices was 0.64 (P
KW - Central corneal thickness
KW - Intraocular pressure
KW - Non-contact device
KW - Repeatability
KW - Tono-pachymeter NT530P
UR - http://www.scopus.com/inward/record.url?scp=79955611374&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955611374&partnerID=8YFLogxK
U2 - 10.1007/s00417-010-1550-3
DO - 10.1007/s00417-010-1550-3
M3 - Article
VL - 249
SP - 429
EP - 434
JO - Graefe's Archive for Clinical and Experimental Ophthalmology
JF - Graefe's Archive for Clinical and Experimental Ophthalmology
SN - 0721-832X
IS - 3
ER -