Total Corneal Astigmatism and Posterior Corneal Surface

2015 ◽  
Vol 31 (6) ◽  
pp. 423-423
Author(s):  
Virgilio Galvis ◽  
Alejandro Tello ◽  
Camilo A. Niño ◽  
M. Margarita Parra ◽  
Noel Alpins ◽  
...  
Keyword(s):  
Corneal Astigmatism ◽  
Corneal Surface ◽  
Total Corneal Astigmatism

Posterior Corneal Surface Toricity and Total Corneal Astigmatism

1991 ◽  
Vol 68 (9) ◽  
pp. 708-710 ◽  
Author(s):  
MARK C. M. DUNNE ◽  
JONATHON M. ROYSTON ◽  
DEREK A. BARNES
Keyword(s):  
Corneal Astigmatism ◽  
Corneal Surface ◽  
Total Corneal Astigmatism

scholarly journals Repeatability of total Keratometry and standard Keratometry by the IOLMaster 700 and comparison to total corneal astigmatism by Scheimpflug imaging

Eye ◽  
2020 ◽  
Vol 35 (1) ◽  
pp. 307-315
Author(s):  
Giacomo Savini ◽  
Leonardo Taroni ◽  
Domenico Schiano-Lomoriello ◽  
Kenneth J. Hoffer
Keyword(s):  
Corneal Astigmatism ◽  
Scheimpflug Imaging ◽  
Iolmaster 700 ◽  
Total Corneal Astigmatism

Posterior corneal astigmatism modifications after cataract surgery and its role on total corneal astigmatism

2018 ◽  
Vol 3 ◽  
pp. 40-40
Author(s):  
Diana Silva ◽  
Mafalda Mota ◽  
Catarina Pedrosa ◽  
Peter Pêgo ◽  
Sara Pinto ◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Corneal Astigmatism ◽  
Posterior Corneal Astigmatism ◽  
Total Corneal Astigmatism

Estimating Total Corneal Astigmatism From Anterior Corneal Data

Cornea ◽  
2017 ◽  
Vol 36 (7) ◽  
pp. 828-833 ◽  
Author(s):  
Kristian Næser ◽  
Giacomo Savini ◽  
Jesper Flethøj Bregnhøj
Keyword(s):  
Corneal Astigmatism ◽  
Total Corneal Astigmatism

Contribution of posterior corneal astigmatism to total corneal astigmatism

2012 ◽  
Vol 38 (12) ◽  
pp. 2080-2087 ◽  
Author(s):  
Douglas D. Koch ◽  
Shazia F. Ali ◽  
Mitchell P. Weikert ◽  
Mariko Shirayama ◽  
Richard Jenkins ◽  
...  
Keyword(s):  
Corneal Astigmatism ◽  
Posterior Corneal Astigmatism ◽  
Total Corneal Astigmatism

scholarly journals Repeatability and Comparability of the Galilei-G4 and Cassini in Measuring Corneal Power and Astigmatism in Normal and Post-Refractive Surgery Eyes

2021 ◽  
Author(s):  
Mohamed Mohamed ◽  
Mahmood Khan ◽  
Amritha Kanakamedala ◽  
Isha Gupta ◽  
Li Wang ◽  
...  
Keyword(s):  
Refractive Surgery ◽  
Intraclass Correlation ◽  
Corneal Astigmatism ◽  
Corneal Power ◽  
History Of ◽  
The Mean ◽  
Age Range ◽  
High Repeatability ◽  
Posterior Corneal Astigmatism ◽  
Total Corneal Astigmatism

Abstract PURPOSE 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. METHODS 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. RESULTS 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 to 91.5 years. In non-refractive and post-refractive eyes, the ICC was > 0.9 (P < .001) for all corneal powers and for simK and total corneal astigmatism for both analyzers. The ICC for posterior corneal astigmatism magnitude using the Galilei was 0.62 and 0.67 and for the Cassini 0.55 and 0.38 in normal and post-refractive eyes, respectively. CONCLUSIONS In both post-refractive and normal eyes, the Galilei G4 and Cassini analyzers have high repeatability in simK, total, and posterior corneal power and low repeatability for posterior corneal astigmatism.

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