comparing the corneal curvatures obtained from three different keratometers-iol master, bausch & lomb manual keratometer and topcon kr-8800 autokeratometer

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ID: 135914
2018
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Abstract
AIM: To compare the corneal curvature and to investigate the agreement between three different keratometers.

METHODS: In this prospective study, keratometry was performed using an IOL Master(IM), a Bausch & Lomb manual keratometer(Man)and TOPCON KR-8800 autokeratometer(Top)on 252 eyes of patients recruited from camps for cataract surgery. The average keratometry values were recorded and compared. The agreements between the instruments were analyzed using the Bland-Altman statistical method. The main outcome measure was average keratometry values.

RESULTS:1)IOL Master and Manual keratometer: the mean corneal power was 44.62±1.52 D with the IOL Master and 44.60±1.52 D with the Manual keratometer. The paired t-test demonstrated a statistically significant difference in the mean corneal power between the IOL Master and Manual keratometer(P=0.001). The 95% LOAs of the two devices were -0.22 to 0.22 as shown in the Bland-Altman plot; 2)IOL Master and autokeratometer: the mean corneal power was 44.62±1.52 D with the IOL Master and 44.46±1.53 D with the autokeratometer. The paired t-test demonstrated a statistically significant difference in the mean corneal power between the IOL Master and autokeratometer(P<0.0001). The 95% LOAs of the two devices were -0.24 to 0.55 as shown in the Bland-Altman plot; 3)Autokeratometer and Manual keratometer: the mean corneal power was 44.60±1.52 D with Manual keratometer and 44.46±1.53 D with the autokeratometer. The paired ttest demonstrated a statistically significant difference in the mean corneal power between the autokeratometer and Manual keratometer(P<0.0001). The 95% LOAs of the two devices were -0.30 to 0.57 as shown in the Bland-Altman plot.

CONCLUSION: Keratometry data obtained with different instruments may not be interchangeable, a fact that has important implications for cataract surgeons with respect to both surgical planning and outcomes auditing.

Reference Key
pereira2018guojicomparing Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Arpitha Pereira;Ajita Sasidharan
Journal journal of fungi
Year 2018
DOI
10.3980/j.issn.1672-5123.2018.1.04
URL
http://ies.ijo.cn/cn_publish/2018/1/201801004.pdf
Keywords Keywords not found

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