Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™)
Repeatability of values is a crucial reliability index in any instrument used to measure ocular parameters. The purpose of this study was to investigate short-term variability of central corneal thickness (CCT) measurements in keratoconic eyes. The Tono-Pachymeter NT530P (Tonopachy™) was used to tak...
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| Format: | Article |
| Language: | English |
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AOSIS
2012-12-01
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| Series: | African Vision and Eye Health |
| Subjects: | |
| Online Access: | https://avehjournal.org/index.php/aveh/article/view/77 |
| _version_ | 1818523460332158976 |
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| author | K. P. Mashige O. A. Oduntan N. M. Gcabashe |
| author_facet | K. P. Mashige O. A. Oduntan N. M. Gcabashe |
| author_sort | K. P. Mashige |
| collection | DOAJ |
| description | Repeatability of values is a crucial reliability index in any instrument used to measure ocular parameters. The purpose of this study was to investigate short-term variability of central corneal thickness (CCT) measurements in keratoconic eyes. The Tono-Pachymeter NT530P (Tonopachy™) was used to take fifty successive automatic measurements of CCT of the right eyes of ten keratoconic subjects(six females and four males), aged 19 to 41 years (mean = 30.4 ± 6.8 years). The means, standard deviations and variances of the measurements showed little variation with good repeatability. Theinter-subject or overall mean values and standard deviations of the measurements were 452.1 ± 30.3 μm. The Kolmogorov-Smirnov (K-S), Lilliefors and Shapiro-Wilks (S-W) tests showed that gener-
ally the data was normally distributed, with a few exceptions. The results of this study suggest that over short periods of time, the Tonopachy™ provides repeatable measures of CCT in keratoconic
corneas. (S Afr Optom 2012 71(3) 102-108) |
| first_indexed | 2024-12-11T05:45:11Z |
| format | Article |
| id | doaj.art-9f1609dd16e24faf86e82a4528bdc660 |
| institution | Directory Open Access Journal |
| issn | 2413-3183 2410-1516 |
| language | English |
| last_indexed | 2024-12-11T05:45:11Z |
| publishDate | 2012-12-01 |
| publisher | AOSIS |
| record_format | Article |
| series | African Vision and Eye Health |
| spelling | doaj.art-9f1609dd16e24faf86e82a4528bdc6602022-12-22T01:19:00ZengAOSISAfrican Vision and Eye Health2413-31832410-15162012-12-0171310210810.4102/aveh.v71i3.7747Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™)K. P. Mashige0O. A. Oduntan1N. M. Gcabashe2Discipline of Optometry, School of Health Sciences, University of KwaZulu-NatalDiscipline of Optometry, School of Health Sciences, University of KwaZulu-NatalDiscipline of Optometry, School of Health Sciences, University of KwaZulu-NatalRepeatability of values is a crucial reliability index in any instrument used to measure ocular parameters. The purpose of this study was to investigate short-term variability of central corneal thickness (CCT) measurements in keratoconic eyes. The Tono-Pachymeter NT530P (Tonopachy™) was used to take fifty successive automatic measurements of CCT of the right eyes of ten keratoconic subjects(six females and four males), aged 19 to 41 years (mean = 30.4 ± 6.8 years). The means, standard deviations and variances of the measurements showed little variation with good repeatability. Theinter-subject or overall mean values and standard deviations of the measurements were 452.1 ± 30.3 μm. The Kolmogorov-Smirnov (K-S), Lilliefors and Shapiro-Wilks (S-W) tests showed that gener- ally the data was normally distributed, with a few exceptions. The results of this study suggest that over short periods of time, the Tonopachy™ provides repeatable measures of CCT in keratoconic corneas. (S Afr Optom 2012 71(3) 102-108)https://avehjournal.org/index.php/aveh/article/view/77Tonopachy™central corneal thicknesskeratoconusrepeatabilityunivariate normality. |
| spellingShingle | K. P. Mashige O. A. Oduntan N. M. Gcabashe Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™) African Vision and Eye Health Tonopachy™ central corneal thickness keratoconus repeatability univariate normality. |
| title | Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™) |
| title_full | Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™) |
| title_fullStr | Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™) |
| title_full_unstemmed | Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™) |
| title_short | Short-term variation of central corneal thickness measurements in keratoconus using the Tono- Pachymeter NT530P (Tonopachy™) |
| title_sort | short term variation of central corneal thickness measurements in keratoconus using the tono pachymeter nt530p tonopachy™ |
| topic | Tonopachy™ central corneal thickness keratoconus repeatability univariate normality. |
| url | https://avehjournal.org/index.php/aveh/article/view/77 |
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