J Korean Ophthalmol Soc.  2015 Apr;56(4):515-520. 10.3341/jkos.2015.56.4.515.

Comparison of Ocular Biometry and Postoperative Refraction in Cataract Patients between Galilei-G6(R) and IOL Master(R)

• Lee JW
• Park SH
• Seong MC
• Cho HY
• Kang MH

• KMID: 2215701
• DOI: http://doi.org/10.3341/jkos.2015.56.4.515

Abstract

PURPOSE
To compare the axial lengths, anterior chamber depths, and keratometric measurements and to predict postoperative refractions of Dual Scheimpflug analyzer Galilei G6(R) and intra ocular lens (IOL) Master(R).
METHODS
A total of 50 eyes in 50 patients who received cataract surgery were included in the present study. The axial length, anterior chamber depth, and keratometry were measured using 2 types of partial coherence interferometries (Galilei G6(R) and IOL Master(R)). The SRK/T formula was used to calculate IOL power and the predictive error which subtracts predictive refraction from postoperative refraction was compared between the ocular biometry devices.
RESULTS
Axial lengths were 23.36 +/- 0.80 mm and 23.36 +/- 0.90 mm measured by Galilei G6(R) and IOL Master(R), respectively. Axial length measured by Galilei G6(R) was not statistically significant compared with IOL Master(R) (p = 0.321). The anterior chamber depth and keratometry were 3.22 +/- 0.35 mm and 44.29 +/- 1.40 D measured by Galilei G6(R) and 3.11 +/- 0.46 mm and 44.39 +/- 1.41 D measured by IOL Master(R), respectively. The differences of anterior chamber depth and keratometry between the 2 devices were statistically significant (p < 0.001 and p = 0.028, respectively). The mean absolute prediction errors were 0.45 +/- 0.37 D and 0.49 +/- 0.39 D in Galilei G6(R) and IOL Master(R), respectively and was not statistically significantly different (p = 0.423).
CONCLUSIONS
The ocular biometric measurements and prediction of postoperative refraction using Galilei G6(R) were as accurate as with IOL Master(R).

Keyword

Axial length; Galilei G6(R); IOL Master(R); Partial coherence interferometry

MeSH Terms

Anterior Chamber
Biometry*
Cataract*
Humans
Interferometry

Figure

• 

  Figure 1. Bland-Altman plot of axial length between Galilei G6® and IOL master® (95% limits of agreement for axial length difference Galilei G6®-IOL master® [-0.101, 0.087]. IOL = intra ocular lens.

• 

  Figure 2. Bland-Altman plot of anterior chamber depth between Galilei G6® and IOL master® (95% limits of agreement for axial length difference: Galilei G6®-IOL master® [-0.22, 0.44]). IOL = intra ocular lens.

• 

  Figure 3. Bland-Altman plot of keratometry between Galilei G6® and IOL master® (A), and auto refractive keratometry (ARK) (B) (95% limits of agreement for axial length difference: Galilei G6®-IOL master® [-0.69, 0.49]; Galilei G6®-ARK [-0.54, 0.44]). IOL = intra ocular lens.

Reference

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