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- W3032621562 abstract "Objective To compare the differences of corneal diameter and anterior chamber depth measured by the Lenstar LS900,IOL Master and Orbscan-Ⅱ.Methods Sixty-three patients with myopia (126 eyes) were involved,and they were the ones who came to Henan Crops Hospital of Armed Police Force in February to March in 2013.Sequential measurements of corneal diameter and anterior chamber depth were performed by the same operator with Lenstar LS900,IOL Master and Orbscan-Ⅱ.Three instruments were measured for 3 times or more.The average value and the data were obtained and statistically analyzed.Results 1.difference:The averages of WTW measured by three instruments were (11.95±0.38)mm,(11.84±0.33)mm and (11.52±0.31)mm.The difference of corneal diameter measured by three different instruments was statistically significant (F =193.15,P =0.004),and the differences between each two instruments were statistically significant,too (Pall≤ 0.05); The averages of ACD measured by Lenstar LS900,IOL Master and Orbscan-Ⅱ were (3.68± 0.21)mm,(3.67±0.21)mm and (3.60±0.20)mm.The difference of anterior chamber depth measured by three consistence instruments was statistically significant (F =3351.40,P =0.001).The difference between Lenstar LS900 and IOL Master was not statistically significant (q=64.21,P =0.135),but there were statistical significance in difference between Orbscan-Ⅱ and Lenstar LS900 (Pall≤0.05).The comparison between IOL Master and Orbscan-Ⅱ was the same result.2.correlation:Positive correlationship existed each two WTW results measured by Lenstar LS900,IOL Master and Orbscan-ii,and the correlation coefficients were 0.795 (P =0.008),0.754 (P =0.014),0.637 (P =0.019); There were also positive correlationship between ACD results measured by Lenstar LS900,IOL Master and Orbscan-Ⅱ,and the correlation coefficients were 0.923 (P =0.010),0.895 (P =0.013),0.905 (P =0.023).3.consistence:Bland-Altman analysis showed that 95％ consistency limit of WTW and ACD measured by three different instruments were both good.Conclusions The results of Lenstar LS900 and IOL Master are the most similar in the measurement of WTW and ACD,and they are larger than that of Orbscan-Ⅱ.The three instruments have high positive correlation and consistency.The instrument which has the best repeatability is Orbscan-Ⅱ.Key words: Lenstar LS900; IOL Master; Orbscan-Ⅱ; Keratometry; Corneal diameter; Anterior chamber depth" @default.
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- W3032621562 date "2014-06-10" @default.
- W3032621562 modified "2023-09-23" @default.
- W3032621562 title "Comparison of corneal diameter and anterior chamber depth measurements taken with the Lenstar LS900,IOL Master and OrbscanII" @default.
- W3032621562 doi "https://doi.org/10.3760/cma.j.issn.1006-4443.2014.06.013" @default.
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