Academic Journal
Repeatability and comparability of the Galilei-G4 and Cassini in measuring corneal power and astigmatism in normal and post-refractive surgery eyes
| Title: | Repeatability and comparability of the Galilei-G4 and Cassini in measuring corneal power and astigmatism in normal and post-refractive surgery eyes |
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| Authors: | Mohamed Mohamed, Mahmood Khan, Amritha Kanakamedala, Isha Gupta, Li Wang, Douglas Koch, Zaina Al-Mohtaseb |
| Source: | Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021) |
| Publisher Information: | Nature Portfolio, 2021. |
| Publication Year: | 2021 |
| Collection: | LCC:Medicine LCC:Science |
| Subject Terms: | Medicine, Science |
| More Details: | Abstract To assess the repeatability and comparability of the Galilei G4 versus the Cassini topographer in post-refractive eyes and in normal eyes, including older patients representative of an initial cataract evaluation. Simulated keratometric (simK), total corneal and posterior corneal power and astigmatism were evaluated in both post-refractive and normal eyes. Repeatability was measured by calculating within-subject standard deviation (Sw), coefficient of variation (CoV), and intraclass correlation coefficient (ICC). Vector analyses and Bland–Altman plots were employed to assess agreement between devices. We studied 32 subjects with a history of refractive surgery and 32 subjects without a history of refractive surgery undergoing cataract surgery. The mean age was 55 ± 18.5 years and the age range was 21.5–91.5 years. In non-refractive and post-refractive eyes, the ICC was > 0.9 (P |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-021-94319-w |
| Access URL: | https://doaj.org/article/883454c695ea42378018bafac93d702a |
| Accession Number: | edsdoj.883454c695ea42378018bafac93d702a |
| Database: | Directory of Open Access Journals |
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| ISSN: | 20452322 |
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| DOI: | 10.1038/s41598-021-94319-w |
| Published in: | Scientific Reports |
| Language: | English |