Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD II
Pur po se: To compare the keratometry results obtained with optical low-coherence reflectometer, corneal topography, and automated keratometry readings and to assess the interexaminer reproducibility of each device. Ma te ri al and Met hod: This comparative study examined 65 eyes of 65 healthy sub...
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| Format: | Article |
| Language: | English |
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Galenos Yayinevi
2013-04-01
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| Series: | Türk Oftalmoloji Dergisi |
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| Online Access: | http://www.oftalmoloji.org/article_2239/Is-It-Possible-To-Replace-Automated-Keratometry-With-Current-Devices-Comparison-With-Lenstar-And-Opd-Ii |
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| author | Bengü Ekinci Köktekir Şansal Gedik Berker Bakbak Şaban Gönül Ömer Kamil Doğan |
| author_facet | Bengü Ekinci Köktekir Şansal Gedik Berker Bakbak Şaban Gönül Ömer Kamil Doğan |
| author_sort | Bengü Ekinci Köktekir |
| collection | DOAJ |
| description | Pur po se: To compare the keratometry results obtained with optical low-coherence reflectometer, corneal topography, and automated
keratometry readings and to assess the interexaminer reproducibility of each device.
Ma te ri al and Met hod: This comparative study examined 65 eyes of 65 healthy subjects. Detailed ophthalmic examination was
performed in all cases following keratometry measurements with a KR 8100A (Topcon, Japan), an OPD Scan II (Nidek, Japan), and a
LenStar LS900 (Haag-Streit, Switzerland). Patients with spheric values over ±3.0D or cylindric values over ±1.0D and with history of
chronic ocular/systemic disease or contact lens usage were excluded from the study. The keratometry readings were compared by using
ANOVA test (SPSS 16.0). A p-value lower than 0.05 was taken as statistically significant. Bland-Altmann analysis was used to
demonstrate agreement between methods, and Spearman rank correlation coefficient (r) was calculated for the correlation. To assess the
interexaminer reproducibility, intraclass correlation coefficient was calculated in 30 eyes for each device.
Re sults: The mean age of the 65 patients enrolled in the study was 21.9±3.25 years. The mean keratometric values obtained with the
autorefractokeratometer, OPD Scan II, and LenStar LS 900 were 43.30±1.47, 43.42±1.44, and 43.29±1.42 respectively. No statistically
significant difference was observed among the three groups (p=0.840). Interexaminer intraclass correlation was found as 78.9%, 99.9%,
and 99.7% for ARK, OPD, and LenStar, respectively.
Dis cus si on: LenStar has provided comparable and well-correlated keratometry measurements in comparison with automated
keratometer and corneal topography. (Turk J Ophthalmol 2013; 43: 73-6) |
| first_indexed | 2024-04-10T14:22:40Z |
| format | Article |
| id | doaj.art-3ff0ac89453d464d99b0f73878547299 |
| institution | Directory Open Access Journal |
| issn | 1300-0659 2147-2661 |
| language | English |
| last_indexed | 2024-04-10T14:22:40Z |
| publishDate | 2013-04-01 |
| publisher | Galenos Yayinevi |
| record_format | Article |
| series | Türk Oftalmoloji Dergisi |
| spelling | doaj.art-3ff0ac89453d464d99b0f738785472992023-02-15T16:09:14ZengGalenos YayineviTürk Oftalmoloji Dergisi1300-06592147-26612013-04-01432737610.4274/tjo.43.72691Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD IIBengü Ekinci Köktekir0Şansal Gedik1Berker Bakbak2Şaban Gönül3Ömer Kamil Doğan4Selcuk University Faculty of Medicine, Department of Ophthalmology, Konya, TurkeySelcuk University Faculty of Medicine, Department of Ophthalmology, Konya, TurkeySelcuk University Faculty of Medicine, Department of Ophthalmology, Konya, TurkeySelcuk University Faculty of Medicine, Department of Ophthalmology, Konya, TurkeyDünya Göz Hospital, Istanbul, TurkeyPur po se: To compare the keratometry results obtained with optical low-coherence reflectometer, corneal topography, and automated keratometry readings and to assess the interexaminer reproducibility of each device. Ma te ri al and Met hod: This comparative study examined 65 eyes of 65 healthy subjects. Detailed ophthalmic examination was performed in all cases following keratometry measurements with a KR 8100A (Topcon, Japan), an OPD Scan II (Nidek, Japan), and a LenStar LS900 (Haag-Streit, Switzerland). Patients with spheric values over ±3.0D or cylindric values over ±1.0D and with history of chronic ocular/systemic disease or contact lens usage were excluded from the study. The keratometry readings were compared by using ANOVA test (SPSS 16.0). A p-value lower than 0.05 was taken as statistically significant. Bland-Altmann analysis was used to demonstrate agreement between methods, and Spearman rank correlation coefficient (r) was calculated for the correlation. To assess the interexaminer reproducibility, intraclass correlation coefficient was calculated in 30 eyes for each device. Re sults: The mean age of the 65 patients enrolled in the study was 21.9±3.25 years. The mean keratometric values obtained with the autorefractokeratometer, OPD Scan II, and LenStar LS 900 were 43.30±1.47, 43.42±1.44, and 43.29±1.42 respectively. No statistically significant difference was observed among the three groups (p=0.840). Interexaminer intraclass correlation was found as 78.9%, 99.9%, and 99.7% for ARK, OPD, and LenStar, respectively. Dis cus si on: LenStar has provided comparable and well-correlated keratometry measurements in comparison with automated keratometer and corneal topography. (Turk J Ophthalmol 2013; 43: 73-6)http://www.oftalmoloji.org/article_2239/Is-It-Possible-To-Replace-Automated-Keratometry-With-Current-Devices-Comparison-With-Lenstar-And-Opd-IiCorneal topographykeratometrykeratometry indexoptical-low coherence reflectometry |
| spellingShingle | Bengü Ekinci Köktekir Şansal Gedik Berker Bakbak Şaban Gönül Ömer Kamil Doğan Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD II Türk Oftalmoloji Dergisi Corneal topography keratometry keratometry index optical-low coherence reflectometry |
| title | Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD II |
| title_full | Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD II |
| title_fullStr | Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD II |
| title_full_unstemmed | Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD II |
| title_short | Is it Possible to Replace Automated Keratometry with Current Devices: Comparison with LenStar and OPD II |
| title_sort | is it possible to replace automated keratometry with current devices comparison with lenstar and opd ii |
| topic | Corneal topography keratometry keratometry index optical-low coherence reflectometry |
| url | http://www.oftalmoloji.org/article_2239/Is-It-Possible-To-Replace-Automated-Keratometry-With-Current-Devices-Comparison-With-Lenstar-And-Opd-Ii |
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